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EP0306710A1 - Shaving blades unit - Google Patents

Shaving blades unit Download PDF

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Publication number
EP0306710A1
EP0306710A1 EP88112761A EP88112761A EP0306710A1 EP 0306710 A1 EP0306710 A1 EP 0306710A1 EP 88112761 A EP88112761 A EP 88112761A EP 88112761 A EP88112761 A EP 88112761A EP 0306710 A1 EP0306710 A1 EP 0306710A1
Authority
EP
European Patent Office
Prior art keywords
shaving
wire
razor blade
plastic body
razor
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
EP88112761A
Other languages
German (de)
French (fr)
Other versions
EP0306710B1 (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 AT88112761T priority Critical patent/ATE81315T1/en
Publication of EP0306710A1 publication Critical patent/EP0306710A1/en
Application granted granted Critical
Publication of EP0306710B1 publication Critical patent/EP0306710B1/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
    • B26B21/40—Details or accessories
    • 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 blade unit for a razor, in which a razor blade or two parallel razor blades are embedded in a plastic body, the cutting edges of which are partially provided with a cover.
  • Razor blade units for wet shavers are known in which a single razor blade or a double razor blade is embedded in a plastic body, the cutting edges of the two razor blades being offset from one another in the double razor blade.
  • a disadvantage of these razor blade units is that unevenness in the skin can be detected by the razor blades during the shaving process and can therefore be the cause of skin injuries (skin irritation) which are sometimes not visible.
  • the object of the invention is to improve the shaving properties in the known razor blade unit.
  • the invention proposes that the plastic body, together with the razor blades, be wrapped with a wire with several turns lying next to one another, the individual turns in the region of the contact surface of the razor blade unit against the skin running parallel to and at a distance from one another.
  • a razor blade unit designed according to this technical teaching with a protective wire considerably improves the shaving properties.
  • the wire prevents the formation of a skin fold, so that skin injuries are avoided even in the invisible area.
  • the wire reduces the required shaving resistance because it also reduces the frictional force that occurs in the protective cap of the razor blade unit to approximately 50% of the total frictional force.
  • the wire is preferably made of metal, since metal with skin has a relatively low coefficient of friction, so that the required shaving resistance is reduced to a minimum.
  • the wire has a diameter of less than 0.1 mm, so that the effective shaving surface is only minimally reduced.
  • the invention proposes that the wire be at least partially in grooves formed in the plastic body is led. These guide grooves ensure that the wire runs in the specified turns at all times without it being able to slip laterally, particularly during the shaving process.
  • the razor blade unit for a wet shaver which can be attached to a handle, not shown, consists of a plastic body 1, in which two razor blades 2.2 'are embedded, the cutting edges 3.3' parallel and offset to each other.
  • the plastic body 1 is wrapped together with the razor blades 2.2 'by means of a wire 4.
  • This wire 4 forms helical windings which run at a distance from one another, as can be seen in FIGS. 1 and 2.
  • the turns of the wire 4 run parallel to the shaving direction, while on the one in FIG. 2 shown back of the razor blade unit, the turns run obliquely.
  • the wire 4 is made of metal and preferably has a diameter of less than 0.1 mm.
  • the plastic body 1 is at least partially provided with grooves 5 in which the individual turns of the wire are guided.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Knives (AREA)

Abstract

The invention relates to a shaving blades unit for a shaver, in which one shaving blade or two mutually parallel shaving blades 2, 2' are embedded in a plastic body 1, the cutting edges 3, 3' of which shaving blades are partially provided with a cover. In order to improve the shaving properties in the case of the known shaving blades unit, the invention proposes that the plastic body 1 together with the shaving blades 2, 2' has wound round it a wire 4 with a plurality of adjacent windings, the individual windings extending, in the region of the surface of the shaving blades unit pressing against the skin, parallel to the shaving direction and mutually spaced. <IMAGE>

Description

Die Erfindung betrifft eine Rasierklingeneinheit für einen Rasierapparat, bei der in einem Kunststoffkörper eine Rasierklinge bzw. zwei zueinander parallele Rasierklingen eingebettet sind, deren Schneidkanten teilweise mit einer Abdeckung versehen sind.The invention relates to a razor blade unit for a razor, in which a razor blade or two parallel razor blades are embedded in a plastic body, the cutting edges of which are partially provided with a cover.

Es sind Rasierklingeneinheiten für Naßrasierapparate bekannt, bei denen in einem Kunststoffkörper eine Einfachrasierklinge oder eine Doppelrasierklinge eingebettet ist, wobei bei der Doppelrasierklinge die Schneidkanten der beiden Rasierklingen versetzt zueinander angeordnet sind.Razor blade units for wet shavers are known in which a single razor blade or a double razor blade is embedded in a plastic body, the cutting edges of the two razor blades being offset from one another in the double razor blade.

Ein Nachteil bei diesen Rasierklingeneinheiten ist, daß während des Rasiervorganges Unebenheiten der Haut von den Rasierklingen erfaßt werden können und damit die Ursache von manchmal auch nicht sichtbaren Hautverletzungen (Hautirritationen) sein können.A disadvantage of these razor blade units is that unevenness in the skin can be detected by the razor blades during the shaving process and can therefore be the cause of skin injuries (skin irritation) which are sometimes not visible.

Um diesen Nachteil zu beseitigen, ist bereits vorgeschlagen worden, die Schneidkante der Rasierklinge mit einem dünnen Blech in schneidende und nichtschneidende Segmente zu unterteilen. Für moderne Rasierklingeneinheiten und für ein optimales Rasieren ist jedoch eine derartige Abdeckung nicht geeignet, da damit eine starke Reduzierung der wirksamen Schnittfläche verbunden ist. Darüber hinaus bietet diese Art von Abdeckung keinen Schutz gegen eine bei dem Rasiervorgang sich zwangsläufig ergebende Hautfalte, so daß es zu Hautverletzungen kommen kann. Weiterhin wird der Rasierwiderstand erhöht, was mit einer weiteren Reizung der Haut verbunden ist. Schließlich ist diese Abdeckung teuer und aufwendig in der Montage.In order to overcome this disadvantage, it has already been proposed to divide the cutting edge of the razor blade with a thin sheet into cutting and non-cutting segments. However, such a cover is not suitable for modern razor blade units and for optimal shaving, since it is associated with a strong reduction in the effective cutting area. In addition, this type of cover offers no protection against a skin fold which is inevitable during the shaving process, so that skin injuries can occur. Furthermore, the shaving resistance is increased, which with further irritation the skin is connected. After all, this cover is expensive and complex to assemble.

Davon ausgehend liegt der Erfindung die Aufgabe zugrunde, bei der bekannten Rasierklingeneinheit die Rasiereigenschaften zu verbessern.Proceeding from this, the object of the invention is to improve the shaving properties in the known razor blade unit.

Als technische Lösung wird mit der Erfindung vorgeschlagen, daß der Kunststoffkörper zusammen mit den Rasierklingen mit einem Draht mit mehreren nebeneinanderliegenden Windungen umwickelt ist, wobei die einzelnen Windungen im Bereich der Andrückfläche der Rasierklingeneinheit an die Haut parallel zur Rasierrichtung und mit Abstand zueinander verlaufen.As a technical solution, the invention proposes that the plastic body, together with the razor blades, be wrapped with a wire with several turns lying next to one another, the individual turns in the region of the contact surface of the razor blade unit against the skin running parallel to and at a distance from one another.

Eine nach dieser technischen Lehre ausgebildete Rasierklingen­einheit mit einem Schutzdraht verbessert die Rasiereigenschaften beträchtlich. Der Draht verhindert die Bildung einer Hautfalte, so daß Hautverletzungen auch im nicht sichtbaren Bereich vermieden werden. Darüber hinaus reduziert der Draht den erforderlichen Rasierwiderstand, da er auch die Reibungskraft, die in der Schutzkappe der Rasierklingeneinheit zu ca. 50% der Gesamtreibungskraft auftritt, reduziert.A razor blade unit designed according to this technical teaching with a protective wire considerably improves the shaving properties. The wire prevents the formation of a skin fold, so that skin injuries are avoided even in the invisible area. In addition, the wire reduces the required shaving resistance because it also reduces the frictional force that occurs in the protective cap of the razor blade unit to approximately 50% of the total frictional force.

Vorzugsweise besteht der Draht aus Metall, da Metall mit Haut einen relativ geringen Reibungskoeffizienten besitzt, so daß der erforderliche Rasierwiderstand auf ein Minimum reduziert wird.The wire is preferably made of metal, since metal with skin has a relatively low coefficient of friction, so that the required shaving resistance is reduced to a minimum.

In einer Weiterbildung des Drahtes weist dieser gemäß einem weiteren Merkmal der Erfindung einen Durchmesser von weniger als 0,1 mm auf, so daß die wirksame Rasierfläche nur minimal reduziert wird.In a further development of the wire, according to a further feature of the invention, it has a diameter of less than 0.1 mm, so that the effective shaving surface is only minimally reduced.

Schließlich wird mit der Erfindung vorgeschlagen, daß der Draht zumindest teilweise in im Kunststoffkörper ausgebildeten Rillen geführt ist. Diese Führungsrillen gewährleisten, daß der Draht jederzeit in den vorgegebenen Windungen verläuft, ohne das er seitlich insbesondere während des Rasiervorganges verrutschen kann.Finally, the invention proposes that the wire be at least partially in grooves formed in the plastic body is led. These guide grooves ensure that the wire runs in the specified turns at all times without it being able to slip laterally, particularly during the shaving process.

Weitere Einzelheiten und Vorteile ergeben sich aus der nachfol­genden Beschreibung der zugehöhrigen Zeichnung, in der eine erfindungsgemäße Rasierklingeneinheit mit einem Schutzdraht schematisch dargestellt ist. In der Zeichnung zeigt:

  • Fig. 1 eine Ansicht einer Rasierklingeneinheit mit einer Drahtwicklung ;
  • Fig. 2 die Rasierklingeneinheit aus Fig. 1, jedoch von der Rückseite her gesehen;
  • Fig. 3 einen Schnitt entlang der Linie III-III in Fig. 1.
Further details and advantages result from the following description of the associated drawing, in which a razor blade unit according to the invention with a protective wire is shown schematically. The drawing shows:
  • 1 is a view of a razor blade unit with a wire winding.
  • FIG. 2 shows the razor blade unit from FIG. 1, but seen from the rear;
  • 3 shows a section along the line III-III in FIG. 1st

Die Rasierklingeneinheit für einen Naßrasierapparat, die an einem nicht dargestellten Handgriff befestigt werden kann, besteht aus einem Kunststoffkörper 1, in dem zwei Rasierklingen 2,2′ eingebettet sind, deren Schneidkanten 3,3′ parallel und versetzt zueinander verlaufen.The razor blade unit for a wet shaver, which can be attached to a handle, not shown, consists of a plastic body 1, in which two razor blades 2.2 'are embedded, the cutting edges 3.3' parallel and offset to each other.

Der Kunststoffkörper 1 ist zusammen mit den Rasierklingen 2,2′ mittels eines Drahtes 4 umwickelt. Dieser Draht 4 bildet wendelförmige Windungen, die mit Abstand zueinander verlaufen, wie in Fig. 1 und Fig. 2 zu erkennen ist. An der Vorderseite der Rasierklingeneinheit, d.h. im Bereich der Andrückfläche der Rasierklingeneinheit an die Haut, verlaufen die Windungen des Drahtes 4 parallel zur Rasierrichtung, während an der in Fig. 2 dargestellten Rückseite der Rasierklingeneinheit die Windungen schräg verlaufen.The plastic body 1 is wrapped together with the razor blades 2.2 'by means of a wire 4. This wire 4 forms helical windings which run at a distance from one another, as can be seen in FIGS. 1 and 2. At the front of the razor blade unit, ie in the region of the pressure surface of the razor blade unit against the skin, the turns of the wire 4 run parallel to the shaving direction, while on the one in FIG. 2 shown back of the razor blade unit, the turns run obliquely.

Der Draht 4 besteht aus Metall und besitzt vorzugsweise einen Durchmesser von weniger als 0,1 mm. Um ein seitliches Verschieben der Windungen des Drahtes 4 auf dem Kunststoffkörper 1 zu verhindern, ist dieser zumindest teilweise mit Rillen 5 versehen, in denen die einzelnen Windungen des Drahtes geführt sind.The wire 4 is made of metal and preferably has a diameter of less than 0.1 mm. In order to prevent a lateral displacement of the turns of the wire 4 on the plastic body 1, the plastic body 1 is at least partially provided with grooves 5 in which the individual turns of the wire are guided.

BezugszeichenlisteReference symbol list

  • 1 Kunststoffkörper1 plastic body
  • 2 Rasierklinge2 razor blades
  • 2′ Rasierklinge2 ′ razor blade
  • 3 Schneidkante3 cutting edge
  • 3′ Schneidkante3 ′ cutting edge
  • 4 Draht4 wire
  • 5 Rille5 groove

Claims (4)

1. Rasierklingeneinheit für einen Rasierapparat, bei der in einem Kunststoffkörper (1) eine Rasierklinge bzw. zwei zueinander parallele Rasierklingen (2,2′) eingebettet sind, deren Schneidkanten (3,3′) teilweise mit einer Abdeckung versehen sind,
dadurch gekennzeichnet,
daß der Kunststoffkörper (1) zusammen mit den Rasierklingen (2,2′ mit einem Draht (4) mit mehreren nebeneinanderliegenden Windungen umwickelt ist, wobei die einzelnen Windungen im Bereich der Andrückfläche der Rasierklingeneinheit an die Haut parallel zur Rasierrichtung und mit Abstand zueinander verlaufen.1. razor blade unit for a razor, in which a razor blade or two parallel razor blades (2,2 ') are embedded in a plastic body (1), the cutting edges (3,3') are partially provided with a cover,
characterized by
that the plastic body (1) is wrapped together with the razor blades (2,2 'with a wire (4) with several adjacent turns, the individual turns in the area of the pressure surface of the razor blade unit on the skin parallel to the shaving direction and spaced apart. 2. Rasierklingeneinheit nach Anspruch 1, dadurch gekennzeichnet, daß der Draht (4) aus Metall besteht.2. razor blade unit according to claim 1, characterized in that the wire (4) consists of metal. 3. Rasierklingeneinheit nach Anspruch 1 oder 2, dadurch gekenn­zeichnet, daß der Draht (4) einen Durchmesser von weniger als 0,1 mm aufweist.3. razor blade unit according to claim 1 or 2, characterized in that the wire (4) has a diameter of less than 0.1 mm. 4. Rasierklingeneinheit nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Draht (4) zumindest teilweise in einem Kunststoffkörper (1) ausgebildeten Rillen (5) ge­führt ist.4. razor blade unit according to one of claims 1 to 3, characterized in that the wire (4) at least partially in a plastic body (1) formed grooves (5) is guided.
EP88112761A 1987-08-25 1988-08-05 Shaving blades unit Expired - Lifetime EP0306710B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88112761T ATE81315T1 (en) 1987-08-25 1988-08-05 RAZOR UNIT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8711506U 1987-08-25
DE8711506U DE8711506U1 (en) 1987-08-25 1987-08-25 Razor blade unit

Publications (2)

Publication Number Publication Date
EP0306710A1 true EP0306710A1 (en) 1989-03-15
EP0306710B1 EP0306710B1 (en) 1992-10-07

Family

ID=6811392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88112761A Expired - Lifetime EP0306710B1 (en) 1987-08-25 1988-08-05 Shaving blades unit

Country Status (10)

Country Link
US (1) US5090124A (en)
EP (1) EP0306710B1 (en)
JP (2) JPS6470089A (en)
KR (1) KR890003501A (en)
AT (1) ATE81315T1 (en)
BR (1) BR8804315A (en)
DE (2) DE8711506U1 (en)
ES (1) ES2035192T3 (en)
GR (1) GR3006092T3 (en)
HK (1) HK124094A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9004760U1 (en) * 1990-04-27 1991-08-29 Wilkinson Sword GmbH, 5650 Solingen Shaver head, in particular razor blade unit, of a wet shaver
DE9004762U1 (en) * 1990-04-27 1991-08-29 Wilkinson Sword GmbH, 5650 Solingen Shaver head, in particular razor blade unit, of a wet shaver
EP0605860A1 (en) * 1993-01-08 1994-07-13 Wilkinson Sword Gesellschaft mit beschränkter Haftung Wet razor

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4914817A (en) * 1988-07-01 1990-04-10 The Gillette Company Razor head with riblets
US4985995A (en) * 1988-09-08 1991-01-22 Wilkinson Sword Gesellschaft Mit Beschrankter Haftung Razor head, especially a razor blade unit
ES2027360T3 (en) * 1988-09-08 1992-06-01 Wilkinson Sword Gesellschaft Mit Beschrankter Haftung SHAVING DEVICE HEAD, SPECIALLY SHAVING BLADE UNIT.
GB2288760B (en) * 1992-03-06 1996-01-03 Wilkinson Sword Gmbh Razor head of a wet razor
GB2265328B (en) * 1992-03-13 1995-05-10 Wilkinson Sword Gmbh Razor head of a wet razor
US5343622A (en) * 1993-02-22 1994-09-06 Andrews Edward A Bi-directional razor device
JPH07303767A (en) * 1994-05-13 1995-11-21 Feather Safety Razor Co Ltd Spare blade cartridge
US5630275A (en) * 1994-08-23 1997-05-20 Warner-Lambert Company Multi-blade razor head with improved performance
US5456009A (en) * 1994-08-23 1995-10-10 Warner-Lambert Company Multi-blade razor head with improved performance
US5579580A (en) * 1995-03-31 1996-12-03 Warner-Lambert Company Bi-directional wire-wrapped blade cartridge
US6839968B2 (en) * 2002-05-09 2005-01-11 The Gillette Company Shaving systems
US6852262B2 (en) * 2002-05-09 2005-02-08 The Gillette Company Insert molding razor cartridges
US20040128835A1 (en) * 2002-10-21 2004-07-08 Eveready Battery Company, Inc. Bidirectional shaving cartridge and razor including same
US8015710B1 (en) * 2004-05-27 2011-09-13 Harley Zyla Shaving device and method of use
US20060218793A1 (en) * 2005-03-31 2006-10-05 Wheel Technology Ltd. Electric razor with helical filament winding
US7681314B2 (en) * 2005-06-10 2010-03-23 Eveready Battery Company Inc. Inter-blade guard and method for manufacturing same
US20080250647A1 (en) * 2007-04-13 2008-10-16 Eveready Battery Company, Inc. Multi-use shaving implement
US20150258697A1 (en) * 2012-10-18 2015-09-17 Jianlun Tong Multifunctional efficient protective tool
US10786914B2 (en) * 2016-07-28 2020-09-29 Bic Violex S.A. Shaving cartridge including a masking foil

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1909989A1 (en) * 1968-02-28 1970-01-22 Philip Morris Inc Safety razor blade with permanently protected edge
DE8700107U1 (en) * 1987-01-03 1987-05-07 Wilkinson Sword GmbH, 5650 Solingen Razor for wet shaving

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1035548A (en) * 1911-12-26 1912-08-13 Modoc Dev Company Safety-razor.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1909989A1 (en) * 1968-02-28 1970-01-22 Philip Morris Inc Safety razor blade with permanently protected edge
DE8700107U1 (en) * 1987-01-03 1987-05-07 Wilkinson Sword GmbH, 5650 Solingen Razor for wet shaving

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9004760U1 (en) * 1990-04-27 1991-08-29 Wilkinson Sword GmbH, 5650 Solingen Shaver head, in particular razor blade unit, of a wet shaver
DE9004762U1 (en) * 1990-04-27 1991-08-29 Wilkinson Sword GmbH, 5650 Solingen Shaver head, in particular razor blade unit, of a wet shaver
US5063669A (en) * 1990-04-27 1991-11-12 Wilkinson Sword Gesellschaft Mit Beschrankter Haftung Razor head, especially razor blade unit, of a wet razor
US5063668A (en) * 1990-04-27 1991-11-12 Wilkinson Sword Gesellschaft Mit Beschrankter Haftung Razor head, especially razor blade unit, of a wet razor
EP0605860A1 (en) * 1993-01-08 1994-07-13 Wilkinson Sword Gesellschaft mit beschränkter Haftung Wet razor
US5467530A (en) * 1993-01-08 1995-11-21 Warner-Lambert Company Wet razor

Also Published As

Publication number Publication date
BR8804315A (en) 1989-03-21
JP2601660Y2 (en) 1999-11-29
US5090124A (en) 1992-02-25
ATE81315T1 (en) 1992-10-15
HK124094A (en) 1994-11-18
GR3006092T3 (en) 1993-06-21
DE3875210D1 (en) 1992-11-12
DE8711506U1 (en) 1987-10-08
EP0306710B1 (en) 1992-10-07
ES2035192T3 (en) 1993-04-16
JPH0999U (en) 1997-02-25
KR890003501A (en) 1989-04-15
JPS6470089A (en) 1989-03-15

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