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US3261097A - Perforated stationary blade for a dry razor having a sharp hair raising edge - Google Patents

Perforated stationary blade for a dry razor having a sharp hair raising edge Download PDF

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Publication number
US3261097A
US3261097A US350776A US35077664A US3261097A US 3261097 A US3261097 A US 3261097A US 350776 A US350776 A US 350776A US 35077664 A US35077664 A US 35077664A US 3261097 A US3261097 A US 3261097A
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US
United States
Prior art keywords
apertures
stationary blade
foil
dry
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.)
Expired - Lifetime
Application number
US350776A
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English (en)
Inventor
Ritter Ernst Michel
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3261097A publication Critical patent/US3261097A/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
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/384—Dry-shaver foils; Manufacture thereof

Definitions

  • This invention relates to a stationary blade for the cutting head of a dry-shave razor which comprises a foil having a plurality of apertures therein and adapted for fitting to the cutting head over a movable cutter.
  • the movable cutter has cutting edges which co-operate with the cutting edges of the apertures in the foil to cut off the beard stubble extending through the apertures as the movable cutter moves thereacross.
  • the apertures in the upper or outer surface of the foil which is in contact with the skin during shaving are funnel-shaped and are often rounded as well in order to make the top of the blade slide easily along the skin.
  • the apertures themselves have been made in a great variety of shapes e.g., round, oval, rectangular, T-shaped, orthorhombic or hexagonal.
  • An object of the invention is a stationary blade for the cutting head of a dry-shave razor which comprises a foil having a plurality of apertures therein and adapted for fitting to the cutting head over a movable cutter, said apertures having sharp edges both at the underside of the foil adjacent the movable cutter and at the upper or outer surface of the foil which is in contact with the skin during shaving.
  • a still further object of the invention is a stationary blade of the kind outlined wherein said apertures are in the form of elongated hexagons having their two shortest parallel sides parallel to the smallest internal width of the hexagon and parallel to the direction in which the movable cutter is moved relative to the foil. In this way the quality of the shave is much improved.
  • FIG. 1 is a plan view of the top side of the foil showing the preferred shape of the apertures
  • FIG. 2 is a cross-section taken through the foil at one of the apertures, on a much larger scale than in FIG. 1.
  • FIG. 2 shows a section through a fragment of foil F.
  • the upper or outer surface 2 of the foil which is in contact with the skin during shaving, is shown at the top, and the under or inner surface 5, along which the movable cutter (not shown) of the cutting head is rapidly reciprocated, is at the bottom.
  • the apertures 3 accordingly have sharp edges 4 at the underside 5, which edges act as cutting edges for the beard stubble extending downwardly into the apertures from the upper surface 2. In contrast to the conventional construction of the apertures 3, however, these also have sharp edges 1 at the upper surface 2.
  • edges 1 do ice not act as additional cutting edges as one might expect but, as cutting head passes over the skin, the sharp edges 1 cause the stubble, which normally always extends more or less obliquely from the skin first to stand perpendicularly to the skin and then to be cut off virtually at right angles to the hair axis at the lower cutting edge 4. Tests have shown the improvement in the quality of the shave obtained in this way to be chiefly due to the preliminary erection of the stubble by means of the sharp edges 1 at the upper surface of the foil.
  • the aforementioned erecting efiect produced by the sharp upper edges 1 of the apertures can be obtained to the full only if the internal width of the apertures 3 remains sufiiciently large in the direction of the normal shaving movement of the cutting head and sufiiciently small in the direction of movement of the movable cutter reciprocated at the underside of the stationary blade, as illustrated in FIG. 1. It is assumed in FIG. 1 that the movable cutter reciprocates from left to right, as indicated by the arrow, and that the normal shaving movement, with which the cutting head is moved over the skin, is approximately from top to bottom or vice versa.
  • the most suitable apertures have been found to be those illustrated in FIG. 1, which are all in the form of an elongated hexagon 3 with its two shorter parallel sides 6, 6' parallel to the smaller internal width of the hexagon and at least approximately parallel to the direction in which the movable cutter of the cutting head is reciprocated.
  • a stationary blade for the cutting head of a dry-shave razor which comprises a foil having a plurality of apertures therein and adapted for fitting to the cutting head over a movable cutter, said apertures being in the form of elongated hexagons having their two shortest parallel sides parallel to the smallest internal Width of the hexagon and parallel to the direction in which the movable cutter is moved relative to said foil and said apertures having sharp edges both at the underside of the foil adjacent the movable cutter and at the upper surface of the foil which is in contact with the skin during shaving.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
US350776A 1963-06-06 1964-03-10 Perforated stationary blade for a dry razor having a sharp hair raising edge Expired - Lifetime US3261097A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH707463A CH403553A (de) 1963-06-06 1963-06-06 Für den Scherkopf von Trockenrasierapparaten bestimmte siebartige Schneidfolie

Publications (1)

Publication Number Publication Date
US3261097A true US3261097A (en) 1966-07-19

Family

ID=4319514

Family Applications (1)

Application Number Title Priority Date Filing Date
US350776A Expired - Lifetime US3261097A (en) 1963-06-06 1964-03-10 Perforated stationary blade for a dry razor having a sharp hair raising edge

Country Status (6)

Country Link
US (1) US3261097A (de)
AT (1) AT242556B (de)
CH (1) CH403553A (de)
DE (2) DE1188473B (de)
FR (1) FR1382414A (de)
GB (1) GB997778A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5377414A (en) * 1992-11-25 1995-01-03 U.S. Philips Corporation Shaving apparatus having a foil-like upper cutter and a foil-like lower cutter
US6032365A (en) * 1997-02-24 2000-03-07 James L. Hodges Slotted rotary shaver
US20120066909A1 (en) * 2006-11-08 2012-03-22 Martin Kluge Shaving Foil for an Electric Shaving Apparatus
USD688543S1 (en) 2012-03-20 2013-08-27 Milwaukee Electric Tool Corporation Saw blade
USD729600S1 (en) 2014-05-06 2015-05-19 Milwaukee Electric Tool Corporation Saw blade
US9475141B2 (en) 2011-08-04 2016-10-25 Milwaukee Electric Tool Corporation Reciprocating saw blade

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU520147B2 (en) * 1980-03-15 1982-01-14 Matsushita Electric Works Ltd. Blade assembly of electric shaver
NL8902807A (nl) * 1989-11-14 1991-06-03 Philips Nv Scheerapparaat.

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2286443A (en) * 1939-05-16 1942-06-16 John T Scully Shaving machine
US2317177A (en) * 1940-08-03 1943-04-20 Remington Rand Inc Dry shaver
US2520487A (en) * 1946-02-28 1950-08-29 Ralph G Arey Swinging blade razor
US2661532A (en) * 1950-12-20 1953-12-08 Salz Max Electric razor
US2701414A (en) * 1952-04-24 1955-02-08 Knapp Raymond Dry shaving device
US2929139A (en) * 1957-06-20 1960-03-22 Bulova Watch Co Inc Rotor for electric razors
US3092904A (en) * 1960-05-09 1963-06-11 Bruecker John Movable cutter for a dry shaver having saw tooth design cutting edge

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB152211A (en) * 1919-10-30 1920-10-14 Sidney Perry Jones Improvements in and relating to rotary razors

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2286443A (en) * 1939-05-16 1942-06-16 John T Scully Shaving machine
US2317177A (en) * 1940-08-03 1943-04-20 Remington Rand Inc Dry shaver
US2520487A (en) * 1946-02-28 1950-08-29 Ralph G Arey Swinging blade razor
US2661532A (en) * 1950-12-20 1953-12-08 Salz Max Electric razor
US2701414A (en) * 1952-04-24 1955-02-08 Knapp Raymond Dry shaving device
US2929139A (en) * 1957-06-20 1960-03-22 Bulova Watch Co Inc Rotor for electric razors
US3092904A (en) * 1960-05-09 1963-06-11 Bruecker John Movable cutter for a dry shaver having saw tooth design cutting edge

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5377414A (en) * 1992-11-25 1995-01-03 U.S. Philips Corporation Shaving apparatus having a foil-like upper cutter and a foil-like lower cutter
US6032365A (en) * 1997-02-24 2000-03-07 James L. Hodges Slotted rotary shaver
US20120066909A1 (en) * 2006-11-08 2012-03-22 Martin Kluge Shaving Foil for an Electric Shaving Apparatus
US8701296B2 (en) * 2006-11-08 2014-04-22 Braun Gmbh Shaving foil for an electric shaving apparatus
US9475141B2 (en) 2011-08-04 2016-10-25 Milwaukee Electric Tool Corporation Reciprocating saw blade
US10226829B2 (en) 2011-08-04 2019-03-12 Milwaukee Electric Tool Corporation Reciprocating saw blade
US12202064B2 (en) 2011-08-04 2025-01-21 Milwaukee Electric Tool Corporation Reciprocating saw blade
USD688543S1 (en) 2012-03-20 2013-08-27 Milwaukee Electric Tool Corporation Saw blade
USD723892S1 (en) 2012-03-20 2015-03-10 Milwaukee Electric Tool Corporation Saw blade
USD729600S1 (en) 2014-05-06 2015-05-19 Milwaukee Electric Tool Corporation Saw blade

Also Published As

Publication number Publication date
DE1898826U (de) 1964-08-13
AT242556B (de) 1965-09-27
FR1382414A (fr) 1964-12-18
GB997778A (en) 1965-07-07
CH403553A (de) 1965-11-30
DE1188473B (de) 1965-03-04

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