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EP0556531A1 - Shaving head, in particular the razor blade unit of a mechanical razor - Google Patents

Shaving head, in particular the razor blade unit of a mechanical razor Download PDF

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Publication number
EP0556531A1
EP0556531A1 EP92710005A EP92710005A EP0556531A1 EP 0556531 A1 EP0556531 A1 EP 0556531A1 EP 92710005 A EP92710005 A EP 92710005A EP 92710005 A EP92710005 A EP 92710005A EP 0556531 A1 EP0556531 A1 EP 0556531A1
Authority
EP
European Patent Office
Prior art keywords
razor
razor blade
weight
blade
steel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP92710005A
Other languages
German (de)
French (fr)
Other versions
EP0556531B1 (en
Inventor
Wolfgang Althaus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wilkinson Sword GmbH
Original Assignee
Wilkinson Sword GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wilkinson Sword GmbH filed Critical Wilkinson Sword GmbH
Priority to ES92710005T priority Critical patent/ES2073899T3/en
Priority to EP92710005A priority patent/EP0556531B1/en
Priority to DE59202090T priority patent/DE59202090D1/en
Priority to AT92710005T priority patent/ATE121983T1/en
Priority to DK92710005.7T priority patent/DK0556531T3/en
Priority to IL10153892A priority patent/IL101538A/en
Priority to JP14471692A priority patent/JP3326620B2/en
Priority to CN92103097A priority patent/CN1028976C/en
Priority to US07/877,438 priority patent/US5305526A/en
Priority to AU16076/92A priority patent/AU635681B1/en
Priority to SU925011442A priority patent/RU2062223C1/en
Priority to BR929201804A priority patent/BR9201804A/en
Priority to KR1019920011515A priority patent/KR930017684A/en
Priority to MX9204446A priority patent/MX9204446A/en
Priority to CA002083767A priority patent/CA2083767C/en
Publication of EP0556531A1 publication Critical patent/EP0556531A1/en
Application granted granted Critical
Publication of EP0556531B1 publication Critical patent/EP0556531B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/40—Details or accessories
    • B26B21/4006—Blades or blade units with discontinuous cutting edges, e.g. wire-wrapped, notches

Definitions

  • the invention relates to a razor head, in particular to a razor blade unit of a wet shaver to be arranged at the front end of a handle, in which a single or double razor blade made of steel is arranged in a plastic body having a front guide bar and a rear cover cap, which can be detached by a knife over the cutting edges extending protective wire is protected, and wherein the cover can be provided with a sliding strip.
  • a razor head which carries a single or double razor blade, is arranged at the front end of a handle.
  • the front shaver head can be integrally formed with the handle in the form of a molded plastic part. If the razor head is formed separately from the handle and can be exchangeably attached to it by means of a corresponding mechanism, one speaks of a razor blade unit in which a single or double razor blade is embedded in a plastic body in a non-detachable manner. With the handle, the razor blade unit is grasped from a dispenser in one-hand operation and then forms the razor as a whole. After the razor blade unit has worn out, it is separated from the handle and a new razor blade unit can be picked up via the coupling mechanism.
  • a razor head or a razor blade unit of the type mentioned is known from DE-GM 90 04 760.
  • a double razor blade is embedded in a base plastic body via a positive connection, which is wrapped with a wire in such a way that the windings of the wire which are arranged parallel to one another and spaced apart from one another run at a right angle over the razor blade cutting edge and provide protection against injury.
  • the protective wire also provides a strength-providing connection between the double blade and the base plastic body.
  • the protective wire wrapping considerably improves the shaving properties in that it both reduces the frictional resistance during the shaving process and also prevents skin injuries - even in the invisible area - that it prevents the formation of skin folds in front of the cutting edges.
  • the protective wire prevents the user from accidentally cutting at the cutting edges if the razor blade unit is handled improperly.
  • the known razor blade unit has razor blades which consist of standard razor blade steel with a carbon content of approximately 0.67% by weight and a chromium content of approximately 13% by weight as well as a manganese content of 0.6% by weight.
  • both the corrosion resistance of these razor blade steels and the shaving properties of the blades made from them leave something to be desired, so that additional coating treatments are required.
  • the overall corrosion problem is neither solved nor can it be achieved to ensure a gentle and gentle shaving process by means of an appropriate sharpness of the blade. This also makes the fundamental problem acute that a development towards sharper blades always involves an increase in the risk of injury.
  • the object of the invention is to achieve the frictional resistance in combination by a further improvement to reduce considerably, thereby creating the possibility of making the cutting edges of the blades sharper than before and, in the sum of the properties, ensuring an even gentler and gentler sliding of the blade over the skin without there being any risk of injury.
  • the blade consists of a strip of steel strip with a width of less than 5 mm and a thickness between 0.05 and 0.25 mm made of a chromium-molybdenum steel alloy with a hardness greater than 620 Vickers units with a residual austenite content of less than 32% , in one piece without openings or holes or the like.
  • Holes which is mounted vibration-free in the plastic body, and that the protective wire by an arrangement at intervals greater than 2 mm and less than 5 mm to each other and by a minimum thickness greater than 0.1 mm, a protective bracket over the razor blade with the effect of a foil.
  • the use of a blade steel makes it possible to produce the blade from a strip of steel strip without perforations and to store it in the plastic body without vibration.
  • the combination of such a razor blade with a specific design of the protective wire to form a protective bracket has made it possible to make the cutting edges of the blades extraordinarily sharp, to dispense with a metal or ceramic coating on them and, together with the vibration-free storage of the cutting edges, a gentle and thorough shave ensure that the protective bracket not only provides absolute skin protection during the shaving process, but also improves the sliding properties by reducing the frictional force and preventing the formation of skin folds in front of the shaver, as is achieved with dry shavers by the shaving blade lying over the cutting edges.
  • the term "shaving blade effect" illustrates a protective bracket design over the cutting edges of the razor blades, in which the skin to be shaved is prevented from bulging too far into the cutting edge area and thus exposing itself to the risk of injury. Rather, it is ensured that the skin maintains a controlled and safe distance from the cutting edge over the cutting edge length, is tensioned many times by the large number of protective brackets, and there are no bulges inward toward the cutting edge.
  • the cutting edge is divided over the entire length of the blade into a multitude of small blade sections, between which, on the one hand, an extraordinarily favorable preparation for the shaving process is achieved by the protective brackets, any cutting is avoided and, on the other hand, the tension means the hair to be cut from the skin surface into the cutting area is lifted in.
  • the distances must not be too small or too large when using a protective wire in the formation of a protective bracket, and the wire must also have a certain thickness.
  • the protective bar is preferably achieved with a protective wire whose distances from one another are 3 mm above the blade, the steel strip of the blade having a width of ⁇ 3 mm and a thickness of 0.1 mm.
  • the razor blade steel is preferably characterized by the following alloy composition: 0.45 to 0.55% by weight of carbon, 12.00 to 14.00% chromium by weight, 0.40 to 1.00% by weight silicon, 0.50 to 1.00% by weight manganese, 1.00 to 1.60% by weight of molybdenum, Remainder iron and melting-related impurities, the steel preferably being austenitized by heating to a temperature between 1,075 ° C and 1,120 ° C and hardened by cooling to a temperature between minus 60 ° C and minus 80 ° C and then tempered at a temperature between 180 ° C and 400 ° C is such that the hardness HV is greater than 620 Vickers units.
  • this steel an extremely sharp blade can be achieved without a metal coating or ceramic coating, which, thanks to the excellent corrosion resistance, is retained in the cutting edge area even in micro areas over the life of the blade.
  • the razor blade steel is preferably characterized by the following alloy composition: carbon 0.50% chrome 13.58% Silicon 0.90% manganese 0.79% molybdenum 1.30% Remainder iron and melting-related impurities.
  • a polytetrafluoroethylene or silicone layer which reduces the side friction and is sintered with the strip of steel strip can additionally be provided.
  • the protective bar over the single or double blade acts, which preferably consists of individual wire bars made of stainless steel X 46 Cr 13 or quality 1.4034 of the 1989 steel key, which are arranged parallel to one another exclusively above the blade.
  • the spacing of the individual wire brackets from one another - neither too narrow nor too far - achieves the desired shaving blade effect. Without the slightest feeling being felt while shaving, the skin is held back and tensioned by the protective brackets, the whiskers are fully gripped by the cutting edges and thus a gentle, gentle shave can be carried out with the greatest skin protection.
  • a further expedient embodiment of the invention consists in designing the sliding strip on the cover cap of the razor blade unit to be convexly curved and thus also covering the rear side of the razor blade unit and the transition region of the cap. This further reduces the frictional resistance and further improves the sliding properties, which are already increased by the sharpness of the blade and the protective bracket.
  • a xerogel is preferably used as the lubricant in the lubricant strip, which, when water is taken up as the dispersant, changes into a lyogel with a friction coefficient ⁇ of less than 0.25, which is highly slidable on the skin of the user. This lubricant does not dissolve out of the sliding strip in contact with water, so that the sliding effect is maintained over the entire life of the blade (cf. DE-OS 37 43 298).
  • a razor head in the form of a razor blade unit for a wet razor which can be attached to the front end of a handle, not shown, consists of a plastic body 1, in which two razor blades 2 are arranged, the cutting edges 3 of which run parallel and offset one behind the other.
  • the plastic body 1 consists of a base part 4 with the razor blades 2 and an upper part 5 placed on this base part 4.
  • the base part 4 of the plastic body 1 has through-openings 6 in the interior which flush the razor blade unit with water to clean the blades in the free flow enable.
  • the base part 4 defines a platform 7 for the razor blades 2.
  • a spacer 8 is arranged in a sandwich-like manner, with which the razor blades 2 are firmly connected.
  • This razor blade / spacer / razor blade unit 9 is arranged on the platform 7 of the base part 4 and then covered from above by a cover cap 10, so that it is permanently integrated in the plastic body 1.
  • the razor blades 2 consist of a corrosion-resistant chromium-molybdenum steel alloy made of 0.50% carbon, 13.58% chromium, 0.90% silicon, 0.79% manganese, 1.3% molybdenum, the rest iron and melting-related impurities austenitized at a temperature of 1090 ° C and holding at this temperature for 30 to 40 seconds and quenched to a temperature of minus 70 ° C for hardening.
  • the blades 2 have a polytetrafluoroethylene or silicone layer, which is not shown, and which is sintered on, reducing the side friction.
  • a protective bracket 11 is arranged over the razor blades 2. This consists of ten single brackets 11 made of stainless steel wire with a diameter greater than 0.1 mm, which are arranged at intervals A of between 2 mm and 3 mm in parallel next to one another and at right angles to the cutting edges of the blades.
  • the protective brackets 11 are connected individually to the base part 4, the upper blade 2 and the upper part 5, but can also be designed in the form of a zigzag-shaped, one-piece wire in a manner known per se.
  • the upper part 5 is a one-piece plastic component and has a front guide bar 12. This extends parallel to the cutting edges 3 of the razor blades 2 and has a step-like longitudinal profile.
  • the upper part 5 is designed as a cover cap 10.
  • This has a sliding strip 13 on the upper side, which is convexly curved and thus covers the entire front area of the cover cap 10, the arc in the transition area and part of the rear side of the razor blade unit.
  • the sliding strip 13 is produced in the hot-molding process and glued to the cover cap 10.
  • the Xerogel integrated in it makes it slippery in contact with water and significantly reduces frictional resistance.
  • the front guide bar 18 and the rear cap 10 are connected to each other by side walls 14 which protect the razor blades 2 between them in such a way that only the cutting edges 3 are exposed.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

To reduce the frictional resistance of a wet razor head, especially a razor blade unit thereof, as well as to provide a sharper blade without the risk of injury, there is provided a combination of a protective wire that covers a blade made of a steel strip having a width of less than 5 mm, a thickness between 0.05 and 0.25 mm, and a chromium/molybdenum steel composition having a hardness of greater than 620 HV and a retained austenite content of less than 32%, with the blade being a single piece that has no perforations or holes and that is mounted in a vibration-free manner in a plastic body. The protective wire comprises loops that are spaced greater than 2 mm but less than 5 mm apart and that have a minimum thickness of greater than 0.1 mm to form a protective guard over the razor blade with the effect of a protective foil.

Description

Die Erfindung betrifft einen Rasierapparatekopf, insbesondere eine am vorderen Ende eines Handgriffs anzuordnende Rasierklingeneinheit eines Naßrasierapparates, bei der in einem, eine vordere Führungsleiste und eine hintere Abdeckkappe aufweisenden Kunststoffkörper eine Einfach- oder Doppelrasierklinge aus Stahl unlösbar angeordnet ist, die durch einen über die Schneidkanten sich erstreckenden Schutzdraht geschützt ist, und wobei die Abdeckkappe mit einem Gleitstreifen versehen sein kann.The invention relates to a razor head, in particular to a razor blade unit of a wet shaver to be arranged at the front end of a handle, in which a single or double razor blade made of steel is arranged in a plastic body having a front guide bar and a rear cover cap, which can be detached by a knife over the cutting edges extending protective wire is protected, and wherein the cover can be provided with a sliding strip.

Naßrasierapparate sind in verschiedenen Ausführungsformen bekannt. So ist jeweils am vorderen Ende eines Handgriffs ein Rasierapparatekopf angeordnet, der eine Einfach- oder Doppelrasierklinge trägt. Dabei kann der vordere Rasierapparatekopf einstückig mit dem Handgriff in Form eines Kunststofformteils ausgebildet sein. Sofern der Rasierapparatekopf separat vom Handgriff ausgebildet ist und mittels eines entsprechenden Mechanismus auswechselbar an diesem befestigt werden kann, spricht man von einer Rasierklingeneinheit, bei der in einem Kunststoffkörper eine Einfach- oder Doppelrasierklinge unlösbar eingebettet ist. Mit dem Handgriff wird die Rasierklingeneinheit aus einem Spender heraus in Einhandbedienung erfaßt und bildet dann insgesamt den Rasierapparat. Nach dem Abnutzen der Rasierklingeneinheit wird diese wieder vom Handgriff getrennt und es kann über den Kupplungsmechanismus eine neue Rasierklingeneinheit aufgenommen werden.Wet shavers are known in various embodiments. A razor head, which carries a single or double razor blade, is arranged at the front end of a handle. The front shaver head can be integrally formed with the handle in the form of a molded plastic part. If the razor head is formed separately from the handle and can be exchangeably attached to it by means of a corresponding mechanism, one speaks of a razor blade unit in which a single or double razor blade is embedded in a plastic body in a non-detachable manner. With the handle, the razor blade unit is grasped from a dispenser in one-hand operation and then forms the razor as a whole. After the razor blade unit has worn out, it is separated from the handle and a new razor blade unit can be picked up via the coupling mechanism.

Ein Rasierapparatekopf bzw. eine Rasierklingeneinheit der eingangs genannten Art ist aus dem DE-GM 90 04 760 bekannt. Dabei ist in einem Basis-Kunststoffkörper über eine formschlüssige Verbindung eine Doppelrasierklinge eingebettet, die mit einem Draht derart umwickelt ist, daß die parallel zueinander angeordneten, mit Abstand nebeneinander liegenden Wicklungen des Drahtes über die Rasierklingenschneidkante im rechten Winkel verlaufen und einen Verletzungsschutz darstellen. Der Schutzdraht stellt darüber hinaus eine die Festigkeit gebende Verbindung zwischen der Doppelklinge und dem Basis-Kunststoffkörper dar. Die Schutzdrahtumwicklung verbessert die Rasiereigenschaften beträchtlich dadurch, daß sie sowohl den Reibungswiderstand während des Rasiervorgangs verringert als auch Hautverletzungen - auch im nicht sichtbaren Bereich - dadurch vermeidet, daß sie die Bildung von Hautfalten vor den Schneidkanten verhindert.A razor head or a razor blade unit of the type mentioned is known from DE-GM 90 04 760. In this case, a double razor blade is embedded in a base plastic body via a positive connection, which is wrapped with a wire in such a way that the windings of the wire which are arranged parallel to one another and spaced apart from one another run at a right angle over the razor blade cutting edge and provide protection against injury. The protective wire also provides a strength-providing connection between the double blade and the base plastic body. The protective wire wrapping considerably improves the shaving properties in that it both reduces the frictional resistance during the shaving process and also prevents skin injuries - even in the invisible area - that it prevents the formation of skin folds in front of the cutting edges.

Schließlich bewirkt der Schutzdraht, daß sich der Benutzer bei unsachgemäßer Behandlung der Rasierklingeneinheit an den Schneidkanten nicht versehentlich schneiden kann.Finally, the protective wire prevents the user from accidentally cutting at the cutting edges if the razor blade unit is handled improperly.

Die bekannte Rasierklingeneinheit weist Rasierklingen auf, die aus Standard-Rasierklingenstahl mit einem Kohlenstoffgehalt von etwa 0,67 Gewichts-% und einem Chromgehalt von ca. 13 Gewichts-% sowie einem Mangangehalt von 0,6 Gewichts-% bestehen. Nachteiligerweise lassen sowohl die Korrosionsbeständigkeit dieser Rasierklingenstähle als auch die Rasiereigenschaften der daraus hergestellten Klingen zu wünschen übrig, so daß zusätzliche Beschichtungsbehandlungen erforderlich sind. Dennoch ist insgesamt weder das Korrosionsproblem gelöst, noch ist es erreichbar, über eine entsprechende Schärfe der Klinge einen sanften und schonenden Rasiervorgang sicherzustellen. Hierbei wird auch das grundsätzliche Problem akut, daß mit einer Entwicklung zu schärferen Klingen hin auch immer eine Erhöhung der Verletzungsgefahr verbunden ist.The known razor blade unit has razor blades which consist of standard razor blade steel with a carbon content of approximately 0.67% by weight and a chromium content of approximately 13% by weight as well as a manganese content of 0.6% by weight. Disadvantageously, both the corrosion resistance of these razor blade steels and the shaving properties of the blades made from them leave something to be desired, so that additional coating treatments are required. Nevertheless, the overall corrosion problem is neither solved nor can it be achieved to ensure a gentle and gentle shaving process by means of an appropriate sharpness of the blade. This also makes the fundamental problem acute that a development towards sharper blades always involves an increase in the risk of injury.

Ausgehend von der oben beschriebenen bekannten Rasierklingeneinheit liegt der Erfindung die Aufgabe zugrunde, kombinativ durch eine weitere Verbesserung zu erreichen, den Reibungswiderstand erheblich zu verringern, dabei die Möglichkeit zu schaffen, die Schneidkanten der Klingen schärfer als bisher auszubilden und in der Summe der Eigenschaften ein noch sanfteres und schonenderes Gleiten der Klinge über die Haut sicherzustellen, ohne daß eine Verletzungsgefahr besteht.Proceeding from the known razor blade unit described above, the object of the invention is to achieve the frictional resistance in combination by a further improvement to reduce considerably, thereby creating the possibility of making the cutting edges of the blades sharper than before and, in the sum of the properties, ensuring an even gentler and gentler sliding of the blade over the skin without there being any risk of injury.

Als technische Lösung wird erfindungsgemäß vorgeschlagen, daß die Klinge aus einem Bandstahlstreifen einer Breite kleiner 5 mm und einer Stärke zwischen 0,05 und 0,25 mm aus einer Chrom-Molybdän-Stahllegierung einer Härte größer 620 Vickers-Einheiten mit einen Restaustenitgehalt kleiner 32 %, einstückig ohne Durchbrechungen oder Bohrungen oder dgl. Lochungen besteht, welche im Kunststoffkörper vibrationsfrei gelagert ist, und daß der Schutzdraht durch eine Anordnung in Abständen größer 2 mm und kleiner 5 mm zueinander und durch eine Mindeststärke größer 0,1 mm einen Schutzbügel über der Rasierklinge mit dem Effekt eines Scherblatts bildet.As a technical solution , it is proposed according to the invention that the blade consists of a strip of steel strip with a width of less than 5 mm and a thickness between 0.05 and 0.25 mm made of a chromium-molybdenum steel alloy with a hardness greater than 620 Vickers units with a residual austenite content of less than 32% , in one piece without openings or holes or the like. Holes, which is mounted vibration-free in the plastic body, and that the protective wire by an arrangement at intervals greater than 2 mm and less than 5 mm to each other and by a minimum thickness greater than 0.1 mm, a protective bracket over the razor blade with the effect of a foil.

Durch die Anwendung eines Klingenstahls wird es möglich, die Klinge aus einem Bandstahlstreifen ohne Lochungen herzustellen und vibrationsfrei im Kunststoffkörper zu lagern. Durch die Kombination einer solchen Rasierklinge mit einer spezifischen Ausgestaltung des Schutzdrahtes zu einem Schutzbügel ist es möglich geworden, die Schneidkanten der Klingen außerordentlich scharf auszubilden, auf eine Metall- oder Keramikbeschichtung dieser zu verzichten und gemeinsam mit der vibrationsfreien Lagerung der Schneiden eine schonende und gründliche Rasur sicherzustellen, wobei der Schutzbügel nicht nur für absoluten Hautschutz während des Rasiervorgangs sorgt, sondern die Gleiteigenschaften durch Verminderung der Reibungskraft und die Verhinderung der Bildung von Hautfalten vor dem Rasierapparat verbessert, wie dies bei Trockenrasierapparaten durch das über den Schneidkanten liegende Scherblatt erreicht wird.The use of a blade steel makes it possible to produce the blade from a strip of steel strip without perforations and to store it in the plastic body without vibration. The combination of such a razor blade with a specific design of the protective wire to form a protective bracket has made it possible to make the cutting edges of the blades extraordinarily sharp, to dispense with a metal or ceramic coating on them and, together with the vibration-free storage of the cutting edges, a gentle and thorough shave ensure that the protective bracket not only provides absolute skin protection during the shaving process, but also improves the sliding properties by reducing the frictional force and preventing the formation of skin folds in front of the shaver, as is achieved with dry shavers by the shaving blade lying over the cutting edges.

Mit dem Begriff "Scherblatteffekt" wird im Zusammenhang mit dem erfindungsgemäßen Naßrasierapparatekopf eine Schutzbügelausbildung über den Schneidkanten der Rasierklingen verdeutlicht, bei der die zu rasierende Haut daran gehindert wird, sich zu tief in den Schneidkantenbereich hinein vorzuwölben und damit Verletzungsgefahren auszusetzen. Es wird vielmehr dafür gesorgt, daß über die Schneidkantenlänge die Haut jeweils einen kontrollierten und ungefährdeten Abstand zur Schneidkante einhält, durch die Vielzahl der Schutzbügel vielfach gespannt ist und keine Vorwölbungen nach innen zur Schneidkante hin auftreten. Die Schneidkante wird über die gesamte Klingenlänge gleichsam in eine Vielzahl kleiner Klingenabschnitte aufgeteilt, zwischen denen einerseits eine außerordentlich günstige Vorbereitung für den Rasiervorgang durch die Schutzbügel erreicht wird, jegliches Einschneiden vermieden wird und andererseits durch die Spannung das zu schneidende Haar aus der Hautoberfläche in den Schneidenbereich hineingehoben wird. Um einen solchen "Scherblatteffekt" zu erreichen, dürfen bei Verwendung eines Schutzdrahtes bei der Ausbildung zu einem Schutzbügel die Abstände weder zu klein noch zu groß sein und muß der Draht auch eine gewisse Stärke haben.In connection with the wet razor head according to the invention, the term "shaving blade effect" illustrates a protective bracket design over the cutting edges of the razor blades, in which the skin to be shaved is prevented from bulging too far into the cutting edge area and thus exposing itself to the risk of injury. Rather, it is ensured that the skin maintains a controlled and safe distance from the cutting edge over the cutting edge length, is tensioned many times by the large number of protective brackets, and there are no bulges inward toward the cutting edge. The cutting edge is divided over the entire length of the blade into a multitude of small blade sections, between which, on the one hand, an extraordinarily favorable preparation for the shaving process is achieved by the protective brackets, any cutting is avoided and, on the other hand, the tension means the hair to be cut from the skin surface into the cutting area is lifted in. In order to achieve such a "shaving blade effect", the distances must not be too small or too large when using a protective wire in the formation of a protective bracket, and the wire must also have a certain thickness.

Vorzugsweise wird der Schutzbügel mit einem Schutzdraht erreicht, dessen Abstände zueinander über der Klinge 3 mm betragen, wobei der Bandstahlstreifen der Klinge eine Breite von < 3 mm und eine Stärke von 0,1 mm aufweist.The protective bar is preferably achieved with a protective wire whose distances from one another are 3 mm above the blade, the steel strip of the blade having a width of <3 mm and a thickness of 0.1 mm.

Der Rasierklingenstahl ist vorzugsweise durch folgende Legierungszusammensetzung gekennzeichnet:
   0,45 bis 0,55 Gewichts-% Kohlenstoff,
   12,00 bis 14,00 Gewichts-% Chrom,
   0,40 bis 1,00 Gewichts-% Silicium,
   0,50 bis 1,00 Gewichts-% Mangan,
   1,00 bis 1,60 Gewichts-% Molybdän,
   Rest Eisen und erschmelzungsbedingte Verunreinigungen, wobei der Stahl vorzugsweise durch Erhitzen auf eine Temperatur zwischen 1.075 °C und 1.120 °C austenitisiert und durch Abkühlen auf eine Temperatur zwischen minus 60 °C und minus 80 °C gehärtet und anschließend bei einer Temperatur zwischen 180 °C und 400 °C angelassen worden ist derart, daß eine Härte HV größer 620 Vickers-Einheiten vorliegt. Mit diesem Stahl ist eine außerordentlich scharfe Klinge ohne Metallbeschichtung oder Keramikbeschichtung erzielbar, die durch die ausgezeichnete Korrosionsbeständigkeit auch in Mikrobereichen über die Lebensdauer der Klinge im Schneidenbereich erhalten bleibt.The razor blade steel is preferably characterized by the following alloy composition:
0.45 to 0.55% by weight of carbon,
12.00 to 14.00% chromium by weight,
0.40 to 1.00% by weight silicon,
0.50 to 1.00% by weight manganese,
1.00 to 1.60% by weight of molybdenum,
Remainder iron and melting-related impurities, the steel preferably being austenitized by heating to a temperature between 1,075 ° C and 1,120 ° C and hardened by cooling to a temperature between minus 60 ° C and minus 80 ° C and then tempered at a temperature between 180 ° C and 400 ° C is such that the hardness HV is greater than 620 Vickers units. With this steel, an extremely sharp blade can be achieved without a metal coating or ceramic coating, which, thanks to the excellent corrosion resistance, is retained in the cutting edge area even in micro areas over the life of the blade.

Vorzugsweise ist der Rasierklingenstahl durch folgende Legierungszusammensetzung gekennzeichnet: Kohlenstoff 0,50 % Chrom 13,58 % Silicium 0,90 % Mangan 0,79 % Molybdän 1,30 %
   Rest Eisen und erschmelzungsbedingte Verunreinigungen.The razor blade steel is preferably characterized by the following alloy composition: carbon 0.50% chrome 13.58% Silicon 0.90% manganese 0.79% molybdenum 1.30%
Remainder iron and melting-related impurities.

Eine die Flankenreibung vermindernde Polytetrafluoräthylen- oder Silikonschicht, die mit dem Bandstahlstreifen versintert ist, kann zusätzlich vorgesehen werden.A polytetrafluoroethylene or silicone layer which reduces the side friction and is sintered with the strip of steel strip can additionally be provided.

Weitere Vorteile werden bei dem erfindungsgemäß benutzten Klingenstahl erzielt durch einen mit der Materialtiefe abnehmenden Restaustenitanteil von 24 % bis 32 % an der Oberfläche und zwischen 6 % und 14 % Restaustenitgehalt in einer Tiefe von 50 µm unterhalb der Oberfläche, wobei der Carbidanteil im Gefüge 100 bis 150 Carbide pro 100 µm² beträgt. Mit dem vorgeschlagenen Stahl lassen sich erstmals Rasierklingen fertigen, die in der Korrosionsbeständigkeit der Klingenschneide und -schärfe überlegen sind, so daß ein leichtes Eindringen in das Barthaar und somit eine gründlichere Rasur ermöglicht ist.Further advantages are achieved in the blade steel used according to the invention by a residual austenite content of 24% to 32% on the surface, which decreases with the material depth, and between 6% and 14% residual austenite content at a depth of 50 μm below the surface, the carbide content in the structure being 100 to 150 carbides per 100 µm². With the proposed steel, razor blades can be produced for the first time, which are superior in the corrosion resistance of the blade cutting edge and sharpness, so that an easy penetration into the whisker and thus a more thorough shave is made possible.

Kombinativ hiermit wirkt der Schutzbügel über der Einfach- oder Doppelklinge, der vorzugsweise aus einzelnen, parallel Zueinander ausschließlich über der Klinge angeordneten Drahtbügeln aus rostfreiem Stahl X 46 Cr 13 bzw. der Qualität 1.4034 des Stahlschlüssels 1989 besteht. Durch die Abstände der einzelnen Drahtbügel zueinander - weder zu eng noch zu weit - wird der gewünschte Scherblatteffekt erzielt. Ohne daß beim Rasieren das Geringste zu spüren ist, wird die Haut durch die Schutzbügel zurückgehalten und gespannt, werden die Barthaare voll von den Schneiden erfaßt und damit eine sanfte, schonende Rasur bei größtem Hautschutz durchführbar.Combined with this, the protective bar over the single or double blade acts, which preferably consists of individual wire bars made of stainless steel X 46 Cr 13 or quality 1.4034 of the 1989 steel key, which are arranged parallel to one another exclusively above the blade. The spacing of the individual wire brackets from one another - neither too narrow nor too far - achieves the desired shaving blade effect. Without the slightest feeling being felt while shaving, the skin is held back and tensioned by the protective brackets, the whiskers are fully gripped by the cutting edges and thus a gentle, gentle shave can be carried out with the greatest skin protection.

Eine weitere zweckmäßige Ausgestaltung der Erfindung besteht darin, den Gleitstreifen auf der Abdeckkappe der Rasierklingeneinheit konvex gekrümmt auszugestalten und damit auch die hintere Seite der Rasierklingeneinheit und den Übergangsbereich der Kappe abzudecken. Hierdurch wird dar Reibungswiderstand weiter verringert und werden die bereits durch die Schärfe der Klinge und den Schutzbügel erhöhten Gleiteigenschaften weiter verbessert. Dabei wird vorzugsweise als Gleitmittel im Gleitstreifen ein Xerogel verwendet, welches bei der Aufnahme von Wasser als Dispersionsmittel in ein auf der Haut des Benutzers hoch gleitfähiges Lyogel mit einem Reibungskoeffizienten µ kleiner 0,25 übergeht. Dieses Gleitmittel löst sich im Kontakt mit Wasser nicht aus dem Gleitstreifen heraus, so daß die Gleitwirkung über die gesamte Lebensdauer der Klinge beibehalten wird (vgl. DE-OS 37 43 298).A further expedient embodiment of the invention consists in designing the sliding strip on the cover cap of the razor blade unit to be convexly curved and thus also covering the rear side of the razor blade unit and the transition region of the cap. This further reduces the frictional resistance and further improves the sliding properties, which are already increased by the sharpness of the blade and the protective bracket. In this case, a xerogel is preferably used as the lubricant in the lubricant strip, which, when water is taken up as the dispersant, changes into a lyogel with a friction coefficient μ of less than 0.25, which is highly slidable on the skin of the user. This lubricant does not dissolve out of the sliding strip in contact with water, so that the sliding effect is maintained over the entire life of the blade (cf. DE-OS 37 43 298).

Weitere Einzelheiten, Merkmale und Vorteile der erfindungsgemäßen Rasierklingeneinheit ergeben sich aus der nachfolgenden Beschreibung der Zeichnung, in der eine bevorzugte Ausführungsform einer Rasierklingeneinheit dargestellt ist. In der Zeichnung zeigt:

Fig. 1
eine Rasierklingeneinheit in Draufsicht und
Fig. 2
die Rasierklingeneinheit in einem Schnitt entlang der Linie I-I der Figur 1.
Further details, features and advantages of the razor blade unit according to the invention result from the following description of the drawing, in which a preferred embodiment of a razor blade unit is shown. The drawing shows:
Fig. 1
a razor blade unit in plan view and
Fig. 2
the razor blade unit in a section along the line II of Figure 1.

Ein Rasierapparatekopf in Form einer Rasierklingeneinheit für einen Naßrasierapparat, die am vorderen Ende eines nicht dargestellten Handgriffs befestigt werden kann, besteht aus einem Kunststoffkörper 1, in dem zwei Rasierklingen 2 angeordnet sind, deren Schneidkanten 3 parallel und versetzt hintereinander verlaufen.A razor head in the form of a razor blade unit for a wet razor, which can be attached to the front end of a handle, not shown, consists of a plastic body 1, in which two razor blades 2 are arranged, the cutting edges 3 of which run parallel and offset one behind the other.

Der Kunststoffkörper 1 besteht aus einem Basisteil 4 mit den Rasierklingen 2 sowie aus einem auf dieses Basisteil 4 aufgesetzten Oberteil 5. Das Basisteil 4 des Kunststoffkörpers 1 weist im Inneren Durchführungsschlitze 6 auf, die ein Spülen der Rasierklingeneinheit mit Wasser zur Säuberung der Klingen im freien Durchfluß ermöglichen. Oberseitig definiert das Basisteil 4 eine Plattform 7 für die Rasierklingen 2. Zwischen den beiden Rasierklingen 2 ist sandwichartig ein Abstandshalter 8 angeordnet, mit dem die Rasierklingen 2 fest verbunden sind. Diese Rasierklinge/Abstandshalter/Rasierklinge-Einheit 9 ist auf der Plattform 7 des Basisteils 4 angeordnet und anschließend von oben durch eine Abdeckkappe 10 abgedeckt, so daß sie unlösbar im Kunststoffkörper 1 integriert ist.The plastic body 1 consists of a base part 4 with the razor blades 2 and an upper part 5 placed on this base part 4. The base part 4 of the plastic body 1 has through-openings 6 in the interior which flush the razor blade unit with water to clean the blades in the free flow enable. On the upper side, the base part 4 defines a platform 7 for the razor blades 2. Between the two razor blades 2, a spacer 8 is arranged in a sandwich-like manner, with which the razor blades 2 are firmly connected. This razor blade / spacer / razor blade unit 9 is arranged on the platform 7 of the base part 4 and then covered from above by a cover cap 10, so that it is permanently integrated in the plastic body 1.

Die Rasierklingen 2 bestehen aus einer korrosionsbeständigen Chrom-Molybdän-Stahllegierung aus 0,50 % Kohlenstoff, 13,58 % Chrom, 0,90 % Silicum, 0,79 % Mangan, 1,3 % Molybdän, Rest Eisen und erschmelzungsbedingte Verunreinigungen, die bei einer Temperatur von 1090 °C und Halten bei dieser Temperatur für 30 bis 40 Sekunden austenitisiert wird und zur Härtung auf eine Temperatur von minus 70 °C abgeschreckt wird. Der Stahl liegt in Form von Bandstahlstreifen einer Breite B = 3 mm und einer Stärke S von 0,1 mm vor, aus denen ohne Durchbrechungen, Bohrungen oder dgl. Lochungen die Klingen einstückig gebildet sind und vibrationsfrei fest mit dem Basisteil 4 für die vordere Klinge und mit dem Abstandshalter 8 für die hintere Klinge verbunden werden. Die Klingen 2 weisen eine nicht dargestellte, die Flankenreibung mindernde Polytetrafluoräthylen- oder Silikonschicht auf, die aufgesintert ist.The razor blades 2 consist of a corrosion-resistant chromium-molybdenum steel alloy made of 0.50% carbon, 13.58% chromium, 0.90% silicon, 0.79% manganese, 1.3% molybdenum, the rest iron and melting-related impurities austenitized at a temperature of 1090 ° C and holding at this temperature for 30 to 40 seconds and quenched to a temperature of minus 70 ° C for hardening. The steel is in the form of strip steel strips with a width B = 3 mm and a thickness S of 0.1 mm, from which the blades are formed in one piece without perforations, bores or the like. Holes and vibration-free firmly with the base part 4 for the front blade and be connected to the spacer 8 for the rear blade. The blades 2 have a polytetrafluoroethylene or silicone layer, which is not shown, and which is sintered on, reducing the side friction.

Über den Rasierklingen 2 ist ein Schutzbügel 11 angeordnet. Dieser besteht aus zehn Einzelbügeln 11 aus Edelstahldraht von größer 0,1 mm Durchmesser, die in Abständen A von zwischen 2 mm und 3 mm parallel nebeneinander und rechtwinklig zu den Schneidkanten der Klingen verlaufend angeordnet sind. Die Schutzbügel 11 sind im dargestellten Ausführungsbeispiel mit dem Basisteil 4, der oberen Klinge 2 und dem Oberteil 5 einzeln verbunden, können aber auch in der Form eines zick-zack-förmig verlaufenden einstückigen Drahtes in an sich bekannter Weise ausgebildet sein.A protective bracket 11 is arranged over the razor blades 2. This consists of ten single brackets 11 made of stainless steel wire with a diameter greater than 0.1 mm, which are arranged at intervals A of between 2 mm and 3 mm in parallel next to one another and at right angles to the cutting edges of the blades. In the exemplary embodiment shown, the protective brackets 11 are connected individually to the base part 4, the upper blade 2 and the upper part 5, but can also be designed in the form of a zigzag-shaped, one-piece wire in a manner known per se.

Das Oberteil 5 ist ein einstückiges Kunststoffbauteil und weist eine vordere Führungsleiste 12 auf. Diese erstreckt sich parallel zu den Schneidkanten 3 der Rasierklingen 2 und besitzt eine treppenartige Längsprofilierung. Im hinteren Bereich ist das Oberteil 5 als Abdeckkappe 10 ausgebildet. Diese weist oberseitig einen Gleitstreifen 13 auf, der konvex gekrümmt ist und somit den gesamten vorderen Bereich der Abdeckkappe 10, den Bogen im Übergangsbereich und einen Teil der Hinterseite der Rasierklingeneinheit bedeckt. Der Gleitstreifen 13 ist im Heißformverfahren hergestellt und mit der Abdeckkappe 10 verklebt. Durch das in ihm integrierte Xerogel wird der im Kontakt mit Wasser glitschig und vermindert den Reibungswiderstand erheblich.The upper part 5 is a one-piece plastic component and has a front guide bar 12. This extends parallel to the cutting edges 3 of the razor blades 2 and has a step-like longitudinal profile. In the rear area, the upper part 5 is designed as a cover cap 10. This has a sliding strip 13 on the upper side, which is convexly curved and thus covers the entire front area of the cover cap 10, the arc in the transition area and part of the rear side of the razor blade unit. The sliding strip 13 is produced in the hot-molding process and glued to the cover cap 10. The Xerogel integrated in it makes it slippery in contact with water and significantly reduces frictional resistance.

Die vordere Führungsleiste 18 und die hintere Abdeckkappe 10 sind durch Seitenwände 14 miteinander verbunden, die die Rasierklingen 2 geschützt zwischen sich derart aufnehmen, daß nur die Schneidkanten 3 freiliegen.The front guide bar 18 and the rear cap 10 are connected to each other by side walls 14 which protect the razor blades 2 between them in such a way that only the cutting edges 3 are exposed.

BezugszeichenlisteReference symbol list

11
KunststoffkörperPlastic body
22nd
DoppelrasierklingeDouble razor blade
33rd
SchneidkantenCutting edges
44th
BasisteilBase part
55
OberteilTop
66
DurchführungsschlitzFeed-through slot
77
Plattformplatform
88th
AbstandshalterSpacers
99
Rasierklinge/Abstandshalter/Rasierklinge-EinheitRazor blade / spacer / razor blade unit
1010th
AbdeckkappeCover cap
1111
SchutzbügelProtection bar
1212
FührungsleisteGuide bar
1313
GleitstreifenSliding strips
1414
Seitenwändeside walls
AA
Abstanddistance
BB
Breitewidth
SS
StärkeStrength

Claims (8)

Rasierapparatekopf, insbesondere eine am vorderen Ende eines Handgriffs anzuordnende Rasierklingeneinheit eines Naßrasierapparates, bei der in einem, eine vordere Führungsleiste (12) und eine hintere Abdeckkappe (10) aufweisenden Kunststoffkörper (1) eine Einfach- oder Doppelrasierklinge (2) aus Stahl unlösbar angeordnet ist, die durch einen über die Schneidkanten (3) sich erstreckenden Schutzdraht (11) geschützt ist,
dadurch gekennzeichnet,
daß die Rasierklinge (2) aus einem Bandstahlstreifen einer Breite (B) kleiner 5 mm und einer Stärke (S) zwischen 0,05 und 0,25 mm einer Chrom-Molybdän-Stahllegierung einer Härte größer 620 Vickers-Einheiten mit einem Restaustenitgehalt kleiner 32 % einstückig ohne Durchbrechungen, Bohrungen oder dgl. Lochungen besteht, welche im Kunststoffkörper (1) vibrationsfrei gelagert ist und daß der Schutzdraht (11) durch eine Anordnung in Abständen (A) größer 2 mm und kleiner 5 mm zueinander und durch eine Mindeststärke größer 0,1 mm einen Schutzbügel über der Rasierklinge (2) mit dem Effekt eines Scherblatts bildet.Razor head, in particular a razor blade unit of a wet shaver to be arranged at the front end of a handle, in which a single or double razor blade (2) made of steel is arranged in a non-detachable manner in a plastic body (1) having a front guide strip (12) and a rear cover cap (10) which is protected by a protective wire (11) extending over the cutting edges (3),
characterized,
that the razor blade (2) from a strip of steel strip with a width (B) less than 5 mm and a thickness (S) between 0.05 and 0.25 mm of a chrome-molybdenum steel alloy with a hardness greater than 620 Vickers units with a residual austenite content less than 32 % in one piece without openings, bores or the like.Perforations, which is mounted vibration-free in the plastic body (1) and that the protective wire (11) by an arrangement at intervals (A) greater than 2 mm and less than 5 mm to each other and by a minimum thickness greater than 0 , 1 mm forms a protective bracket over the razor blade (2) with the effect of a foil. Rasierapparatekopf nach Anspruch 1, dadurch gekennzeichnet, daß der Bandstahlstreifen der Rasierklinge (2) eine Breite (B) von < 3 mm und eine Stärke (S) von 0,1 mm aufweist, wobei der Schutzbügel durch Schutzdrähte (11) gebildet ist, deren Abstände (A) zueinander etwa 3 mm betragen.A razor head according to claim 1, characterized in that the steel strip of the razor blade (2) has a width (B) of <3 mm and a thickness (S) of 0.1 mm, the protective bracket being formed by protective wires (11), the The distances (A) to each other are about 3 mm. Rasierapparatekopf nach Anspruch 1 und 2, gekennzeichnet durch folgende Legierungszusammensetzung der Rasierklinge (2):
   0,45 bis 0,55 Gewichts-% Kohlenstoff,
   12,00 bis 14,00 Gewichts-% Chrom,
   0,40 bis 1,00 Gewichts-% Silicium,
   0,50 bis 1,00 Gewichts-% Mangan,
   1,00 bis 1,60 Gewichts-% Molybdän,
   Rest Eisen und erschmelzungsbedingte Verunreinigungen,
wobei der Stahl durch eine Wärmebehandlung eine Härte größer 620 Vickers-Einheiten aufweist.A razor head according to claims 1 and 2, characterized by the following alloy composition of the razor blade (2):
0.45 to 0.55% by weight of carbon,
12.00 to 14.00% by weight of chromium,
0.40 to 1.00% by weight silicon,
0.50 to 1.00% by weight manganese,
1.00 to 1.60% by weight of molybdenum,
Remainder iron and melting-related impurities,
the steel has a hardness greater than 620 Vickers units due to heat treatment. Rasierapparatekopf nach Anspruch 3, gekennzeichnet durch folgende Legierungszusammensetzung der Rasierklinge (2): Kohlenstoff 0,5 Gewichts-% Chrom 13,58 Gewichts-% Silicium 0,90 Gewichts-% Mangan 0,79 Gewichts-% Molybdän 1,30 Gewichts-%
Rest Eisen und erschmelzungsbedingte Verunreiniungen,
wobei die Austenitisierung bei einer Temperatur zwischen 1.075 °C und 1.120 °C durchgeführt wird und zur Härtung auf eine Temperatur zwischen minus 60 °C und minus 80 °C abgeschreckt wird und anschließend bei einer Temperatur zwischen 180 °C und 400 °C angelassen wird.A razor head according to claim 3, characterized by the following alloy composition of the razor blade (2): carbon 0.5% by weight chrome 13.58% by weight Silicon 0.90% by weight manganese 0.79% by weight molybdenum 1.30% by weight
Rest of iron and melting-related impurities,
the austenitization is carried out at a temperature between 1,075 ° C and 1,120 ° C and quenched for hardening to a temperature between minus 60 ° C and minus 80 ° C and then tempered at a temperature between 180 ° C and 400 ° C. Rasierapparatekopf nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß auf die Rasierklingen (2) eine Polytetrafluoräthylen- oder Silikonschicht aufgetragen und versintert ist.A razor head according to one of claims 1 to 4, characterized in that a layer of polytetrafluoroethylene or silicone is applied and sintered to the razor blades (2). Rasierapparatekopf nach einem der Ansprüche 1 bis 5, gekennzeichnet durch einen Rasierklingenstahl mit einem mit der Materialtiefe abnehmenden Restaustenitanteil von 24 bis 32 % an der Oberfläche und zwischen 6 und 14 % Restaustenitgehalt in einer Tiefe von 50 µm unterhalb der Oberfläche, wobei der Carbidanteil im Gefüge 100 bis 150 Partikel pro 100 µm² beträgt.A razor head according to one of Claims 1 to 5, characterized by a razor blade steel with a residual austenite content of 24 to 32% on the surface, which decreases with the material depth, and between 6 and 14% residual austenite content at a depth of 50 µm below the surface, the carbide content in the structure 100 to 150 particles per 100 µm². Rasierapparatekopf nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Schutzbügel aus einzelnen, parallel zueinander ausschließlich über der Rasierklinge (2) angeordneten Drahtbügeln (11) aus rostfreiem Stahl X 46Cr 13 besteht.A razor head according to one of Claims 1 to 6, characterized in that the protective bracket consists of individual wire brackets (11) made of stainless steel X 46Cr 13 and arranged parallel to one another exclusively above the razor blade (2). Rasierapparatekopf nach einem der Ansprüche 1 bis 7, gekennzeichnet durch einen Gleitstreifen (13) auf der Abdeckkappe (10), der konvex gekrümmt ist und den Übergangsbereich zur Abdeckkappe (10) sowie die hintere Seite des Kunststoffkörpers (1) zusätzlich abdeckt, wobei als Gleitmittel im Gleitstreifen ein Xerogel verwendet ist, welches bei der Aufnahme von Wasser als Dispersionsmittel in ein auf der Haut des Benutzers hochgleitfähiges Lyogel mit einem Reibungskoeffizienten µ kleiner 0,25 übergeht.A razor head according to one of claims 1 to 7, characterized by a sliding strip (13) on the cover cap (10), which is convexly curved and additionally covers the transition area to the cover cap (10) and the rear side of the plastic body (1), using as a lubricant In the glide strip a xerogel is used which, when water is taken up as a dispersing agent, changes into a lyogel which is highly slidable on the skin of the user and has a coefficient of friction µ less than 0.25.
EP92710005A 1992-02-14 1992-02-14 Shaving head, in particular the razor blade unit of a mechanical razor Expired - Lifetime EP0556531B1 (en)

Priority Applications (15)

Application Number Priority Date Filing Date Title
ES92710005T ES2073899T3 (en) 1992-02-14 1992-02-14 HEAD OF A SHAVING DEVICE, ESPECIALLY A SHAVING BLADE UNIT, OF A WET SHAVING DEVICE.
EP92710005A EP0556531B1 (en) 1992-02-14 1992-02-14 Shaving head, in particular the razor blade unit of a mechanical razor
DE59202090T DE59202090D1 (en) 1992-02-14 1992-02-14 Shaver head, in particular a razor blade unit, of a wet shaver.
AT92710005T ATE121983T1 (en) 1992-02-14 1992-02-14 SHAVING HEAD, IN PARTICULAR A RAZOR BLADE UNIT, OF A WET SHAVING APPARATUS.
DK92710005.7T DK0556531T3 (en) 1992-02-14 1992-02-14 Razor head, especially razor blade for a wet razor
IL10153892A IL101538A (en) 1992-02-14 1992-04-09 Razor head in particular a razor blade unit of wet razor
JP14471692A JP3326620B2 (en) 1992-02-14 1992-04-21 Razor head
CN92103097A CN1028976C (en) 1992-02-14 1992-04-27 Shaving knife head, especially its cutting blade components of wet type shaving knife
US07/877,438 US5305526A (en) 1992-02-14 1992-04-30 Razor head, especially razor blade unit of a wet razor
AU16076/92A AU635681B1 (en) 1992-02-14 1992-05-07 Razor head, in particular a razor blade unit of a wet razor
SU925011442A RU2062223C1 (en) 1992-02-14 1992-05-08 Head of safe razor
BR929201804A BR9201804A (en) 1992-02-14 1992-05-13 SHAVING HEAD, ESPECIALLY SHAVING BLADE UNIT, FROM A WET SHAVING EQUIPMENT
KR1019920011515A KR930017684A (en) 1992-02-14 1992-06-30 Razor blade unit of wet shaver
MX9204446A MX9204446A (en) 1992-02-14 1992-07-30 HEAD FOR SHAVING KNIFE
CA002083767A CA2083767C (en) 1992-02-14 1992-11-25 Razor head, in particular a razor blade unit of a wet razor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92710005A EP0556531B1 (en) 1992-02-14 1992-02-14 Shaving head, in particular the razor blade unit of a mechanical razor

Publications (2)

Publication Number Publication Date
EP0556531A1 true EP0556531A1 (en) 1993-08-25
EP0556531B1 EP0556531B1 (en) 1995-05-03

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EP92710005A Expired - Lifetime EP0556531B1 (en) 1992-02-14 1992-02-14 Shaving head, in particular the razor blade unit of a mechanical razor

Country Status (15)

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US (1) US5305526A (en)
EP (1) EP0556531B1 (en)
JP (1) JP3326620B2 (en)
KR (1) KR930017684A (en)
CN (1) CN1028976C (en)
AT (1) ATE121983T1 (en)
AU (1) AU635681B1 (en)
BR (1) BR9201804A (en)
CA (1) CA2083767C (en)
DE (1) DE59202090D1 (en)
DK (1) DK0556531T3 (en)
ES (1) ES2073899T3 (en)
IL (1) IL101538A (en)
MX (1) MX9204446A (en)
RU (1) RU2062223C1 (en)

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US11654588B2 (en) 2016-08-15 2023-05-23 The Gillette Company Llc Razor blades
US10864611B2 (en) 2017-05-12 2020-12-15 Utitec, Inc. Method of sharpening hardened thin metal blades

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GB1162757A (en) * 1966-03-16 1969-08-27 Gillette Co Razor Blades and Manufacture Thereof
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GB1133535A (en) * 1967-04-04 1968-11-13 Sandvikens Jernverks Ab Improvements in or relating to razor blades
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WO1996030172A2 (en) * 1995-03-31 1996-10-03 Warner-Lambert Company Bi-directional wire-wrapped blade cartridge
WO1996030172A3 (en) * 1995-03-31 1999-11-18 Warner Lambert Co Bi-directional wire-wrapped blade cartridge

Also Published As

Publication number Publication date
CA2083767C (en) 1998-09-15
EP0556531B1 (en) 1995-05-03
CN1028976C (en) 1995-06-21
KR930017684A (en) 1993-09-20
JPH05277264A (en) 1993-10-26
CN1075280A (en) 1993-08-18
JP3326620B2 (en) 2002-09-24
ATE121983T1 (en) 1995-05-15
RU2062223C1 (en) 1996-06-20
BR9201804A (en) 1993-08-24
DK0556531T3 (en) 1995-09-04
DE59202090D1 (en) 1995-06-08
US5305526A (en) 1994-04-26
IL101538A (en) 1996-07-23
MX9204446A (en) 1993-09-01
ES2073899T3 (en) 1995-08-16
CA2083767A1 (en) 1993-08-15
AU635681B1 (en) 1993-03-25

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