US3863340A - Plural edge shaving system - Google Patents

Plural edge shaving system Download PDF

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Publication number
US3863340A
US3863340A US287513A US28751372A US3863340A US 3863340 A US3863340 A US 3863340A US 287513 A US287513 A US 287513A US 28751372 A US28751372 A US 28751372A US 3863340 A US3863340 A US 3863340A
Authority
US
United States
Prior art keywords
members
faces
cutting edge
edge
leading
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
US287513A
Other languages
English (en)
Inventor
Roger L Perry
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.)
Gillette Co LLC
Original Assignee
Gillette Co LLC
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 Gillette Co LLC filed Critical Gillette Co LLC
Priority to US287513A priority Critical patent/US3863340A/en
Priority to ZA735905A priority patent/ZA735905B/xx
Priority to AU59847/73A priority patent/AU481971B2/en
Priority to BE1005335A priority patent/BE804415A/fr
Priority to GB4183773A priority patent/GB1439997A/en
Priority to BR6936/73A priority patent/BR7306936D0/pt
Priority to IT52369/73A priority patent/IT994207B/it
Priority to DE19732345745 priority patent/DE2345745A1/de
Priority to AR249992A priority patent/AR199223A1/es
Priority to NL7312354A priority patent/NL7312354A/xx
Priority to JP10101673A priority patent/JPS49133150A/ja
Priority to CA180,535A priority patent/CA1003628A/en
Priority to ES418565A priority patent/ES418565A1/es
Priority to FR7332398A priority patent/FR2199280A5/fr
Application granted granted Critical
Publication of US3863340A publication Critical patent/US3863340A/en
Priority to NO753595A priority patent/NO753595L/no
Priority to SE7609095A priority patent/SE7609095L/xx
Priority to AU23254/77A priority patent/AU2325477A/en
Priority to NL7703502A priority patent/NL7703502A/xx
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
    • B26B21/08—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 involving changeable blades
    • B26B21/14—Safety razors with one or more blades arranged transversely to the handle
    • B26B21/22—Safety razors with one or more blades arranged transversely to the handle involving several blades to be used simultaneously
    • 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
    • B26B21/08—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 involving changeable blades
    • B26B21/14—Safety razors with one or more blades arranged transversely to the handle
    • B26B21/24—Safety razors with one or more blades arranged transversely to the handle of the magazine type; of the injector type
    • 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
    • B26B21/54—Razor-blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/08—Containers or packages with special means for dispensing contents for dispensing thin flat articles in succession
    • B65D83/10—Containers or packages with special means for dispensing contents for dispensing thin flat articles in succession for razor blades or razor cartridges

Definitions

  • ABSTRACT A plural edge structure for use in shaving includes leading and following members, each of which has two flat faces and a straight sharpened cutting edge parallel to the faces.
  • the two members are permanently secured together with their second faces contiguous, and with their cutting edges parallel to one another and in a plane inclined to the second faces.
  • a plural cutting edge shaving system can provide superior shaving characteristics.
  • Such a shaving system includes at least two cutting edges disposed parallel to one another in spaced relation to provide leading and following cutting edges so that both cutting edges are in contact with the face and are successively active with respect to the hair elements being cut during a single shaving stroke.
  • the blade tangent angle of an edge is the angle between the plane bisecting the two planes defining the edge and the plane through the edge and tangent to the skin engaging surface next forward of the edge.
  • the portion of the bisecting plane external to the material of the edge and the portion of the tangent plane forward of the edge are conventionally used in defining the angle so that a blade tangent angle less than 90 is obtained in any practical shaving geometry.
  • the span of an edge is the distance from the edge to the next forward skin engaging surface measured in the plane through the edge and tangent to the next forward skin engaging surface.
  • the exposure of an edge is the distance of the edge from a plane tangent to both the next forward and the next rearward skin engaging surfaces. The exposure may be positive or negative and is reckoned positive when the edge lies on the skinward side of the doubly tangent plane.
  • the leading edge will be itself the skin engaging surface next forward of the following edge, so that its position will in part determine the blade tangent angle and the exposure of the following edge. Further, the following edge will itself be the next rearward skin engaging surface of the leading edge, so that its position will in part determine the exposure of the leading edge.
  • Objects of the present invention include establishing and permanently maintaining advantageous geometric relationships between the edges of a plural edge shaving structure. reducing the cost of such a structure, and providing such a structure that is easily handled and dispensed using conventional shaving equipment.
  • the invention features a plural edge structure including a leading blade member and a following blade member, each member having the form of a plate bounded by first and second flat faces, and each member having a straight, sharpened cutting edge thereon parallel to the faces.
  • the two members are permanently affixed with their cutting edges positioned parallel to each other and in a plane inclined to the second faces.
  • a particular embodiment features two members which have unsymmetrical edges thereon and have passages therethrough to facilitate removal of shaving debris from the cutting edge and are permanently affixed to each other as by spot welding to maintain the distance between the edges at a value in the range 0.03 inch to 0.08 inch and the blade tangent angle of the following edge at a value in the range 20 to 32.
  • FIG. I shows a shaving system including a blade holder and a blade dispenser and employing a plural blade structure according to the invention
  • FIG. 2 shows in plan view the blade structure used in the shaving system of FIG. 1;
  • FIG. 3 shows a cross sectional view of the structure shown in FIG. 2, the cross section being taken along the line 3-3 of FIG. 2;
  • FIG. 4 shows in cross section a portion of the shaving system to reveal details in the vicinity of the cutting edges, the cross section being taken along the line 4-4 shown in FIG. 1.
  • a PARTICULAR EMBODIMENT Shaving system 10 shown in FIG. 1, includes blade holder 12 and blade dispenser M.
  • a plural edge structure I6 according to the invention is conveniently supported in holder 12 for shaving.
  • Replacement blade structures are stored in and dispensed from holder l4 in a manner well understood by most men as well as those specially skilled in the art of shaving equipment.
  • blade structure 16 is made up of two identical members 18 and 20.
  • Member 18 has the general form of a thin plate several times longer than it is wide, bounded by flat parallel faces 22, 24. (In a particular embodiment dimensions are L495 inch X 0.288 inch 0.006 inch.)
  • a sharp cutting edge 26 is formed along one of the longer sides of member 18.
  • Edge 26 is unsymmetrically formed with respect to a median plane through the plate so that it is parallel to faces 22 and 24 but closer to face 24 than to face 22.
  • edge 26 is 0.00l inch from face 24 and 0.005 inch from face 22.
  • planes defining edge 26 are oriented at different angles to face 24 so that the bisector plane 42 bisecting edge 26 is inclined to face 24 at an angle of 4", the sense of the angle being such that the bisector 42 diverges from face 24 in the skinward direction.
  • a number of debris removal slots 28 pierce blade member 18 as does elongated slot 30 used to facilitate holding of the structure in holder 12.
  • Blade member 20 with faces 32 and 34 and edge 36, is identical in all respects with blade member 18, and in particular, edge 36 is parallel to faces 32 and 34 while lying closer to face 34, and bisector plane 44 associated with edge 36 is inclined to face 32.
  • Members 18 and 20 are permanently affixed to each other by spot welds 38, to form plural edge structure 16, the position of the members relative to each other being staggered and such that faces 22 and 32 are contiguous and edges 26 and 36 are permanently maintained parallel to each other at a distance of 0.03l inches and in plane 40 inclined at an angle of l9 to contiguous flat faces 22 and 32.
  • Member 18, with its edge 26, thus becomes the leading member in structure 16 while member 20, with its edge 36, becomes the following member.
  • the angle between bisector plane 44 of edge 36 and plane 40, containing both edges, is the blade tangent angle of the following edge and in the described structure has the value 23.
  • blade structure 16 is held in holder 12 with the two edges 26 and 36 intermediate between forward face guard element 50 and cap element 52.
  • the span S1 of leading edge 26 is established by the position of structure 16 in holder 12.
  • the span S2 of trailing edge 36 is established by blade structure 16 without reference to the holder, the value being 0.031 inch.
  • each blade member by forming the cutting edges unsymmetrically with respect to the median plane of each blade member a lesser total thickness of metal is required for a given edge separation than if the edges were formed on the median plane. This results in an economy of metal use and also facillitates fitting the plural edge structure compactly into holders originally designed for holding single edge structures.
  • the inclination of the bisector angle of the edges to the plane of the blade member facillitates positioning the blade members so that both edges can have both an advantageous exposure and an advantageous blade tangent angle.
  • the permanent affixing of the blade members is advantageous in that it simplifies handling and dispensing of the shaving structure and ensures that the desired relationship between the edges is not impared. ln manufacturing, the blade members are advantageously stamped and sharpened before being joined together. The use of identical members may be advantageous in simplifying manufacturing operations.
  • blade members of other or different thicknesses may be used; the blade members may be secured together in a variety of ways including the use of suitable bonding agents to maintain the established geometry; and/or the blade edge may be sharpened to other or different configurations. Therefore, it is not intended that the invention be limited to the disclosed embodiment or to details thereof but departures may be made therefrom within the spirit scope of the invention.
  • a plural edge structure for use in shaving including a leading member and a following member, each of said members having the form of a plate bounded by first and second flat faces, and each said member having two intersecting facets that define a straight, sharpened cutting edge thereon parallel to said faces, each said cutting edge being offset outwardly from the center of the member at least about one-third the distance from the center of the member to its said first face so that it is positioned closer to the first than to the second of said faces, each of said facets being inclined with respect to the immediately adjacent face of the blade member and said two facets defining a bisector plane, said leading and following members being permanently affixed together with their respective second faces con tiguous and with said cutting edges fixed in position parallel to each other in a plane inclined to said second faces in position to maintain a fixed distance perpendicular to said second faces of less than 0.02 inch between said cutting edge of said leading member and said cutting edge of said following member, a span between said cutting edge of said leading member and said cutting edge of said following member
  • a structure as claimed in claim 1 at least one of said members having an edge with a bisecting plane inclined to the second face of the associated member and with said members being affixed with the bisecting planes of said edges inclined to one another and diverging from one another in the direction away from the bodies of said members.
  • a plural edge razor blade structure for use with a conventional razor having cap and guard structure, and blade structure being insertable into said razor between said cap and guard structure and including a leading rigid blade member and a following rigid blade member, said blade members being identical to one another and each of said members having the form of a plate bounded by first and second flat parallel faces, and each member having two intersecting facets that define a straight, sharpened cutting edge thereon parallel to said faces, each said cutting edge being offset outwardly from the member at least about one-third the distance from the center of the member to its said first face so that it is positioned closer to the first than to the second of said faces, each of said facets being inclined with respect to the immediately adjacent face of the blade member and said two facets defining a bisector plane, said leadingand following members being permanently affixed together with their respective second faces contiguous and with said cutting edges fixed in position parallel to each other in a plane inclined to said second faces in position to maintain a fixed distance perpendicular to said second faces of less than 0.02 inch between said cutting
  • each of said members having an edge with a bisecting plane inclined to the second face of the associated member and said members being affixed to one another with the bisecting planes of said edges inclined to one another and diverging from one another in the direction away from the bodies of said members.
  • each of said members having passages penetrating therethrough for removal of shaving debris from the vicinity of the cutting edge.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Dry Shavers And Clippers (AREA)
US287513A 1972-09-08 1972-09-08 Plural edge shaving system Expired - Lifetime US3863340A (en)

Priority Applications (18)

Application Number Priority Date Filing Date Title
US287513A US3863340A (en) 1972-09-08 1972-09-08 Plural edge shaving system
ZA735905A ZA735905B (en) 1972-09-08 1973-08-28 Improved shaving system
AU59847/73A AU481971B2 (en) 1973-08-30 Improved shaving apparatus
BE1005335A BE804415A (fr) 1972-09-08 1973-09-04 Dispositif de rasage perfectionne
GB4183773A GB1439997A (en) 1972-09-08 1973-09-05 Replaceable plural edge blade units
IT52369/73A IT994207B (it) 1972-09-08 1973-09-06 Complesso per rasatura con gruppo sostituibile di lametta composita a piu bordi taglienti e relativo distributore ad iniezione
BR6936/73A BR7306936D0 (pt) 1972-09-08 1973-09-06 Unidade de lamina aperfeicoada de gume plural, magazine aperfeicoado para laminas de barbear e barbeador de seguranca, aperfeicoado para uso com os mesmos
NL7312354A NL7312354A (fr) 1972-09-08 1973-09-07
DE19732345745 DE2345745A1 (de) 1972-09-08 1973-09-07 Verbessertes rasiersystem
JP10101673A JPS49133150A (fr) 1972-09-08 1973-09-07
CA180,535A CA1003628A (en) 1972-09-08 1973-09-07 Plural edge shaving system
ES418565A ES418565A1 (es) 1972-09-08 1973-09-07 Una unidad de hoja de filos multiples para uso en una ma- quinilla de afeitar del tipo de inyector.
FR7332398A FR2199280A5 (fr) 1972-09-08 1973-09-07
AR249992A AR199223A1 (es) 1972-09-08 1973-09-07 Unidad de hoja de filos multiples
NO753595A NO753595L (fr) 1972-09-08 1975-10-27
SE7609095A SE7609095L (sv) 1972-09-08 1976-08-13 Rakhyvel
AU23254/77A AU2325477A (en) 1972-09-08 1977-03-15 Safety razor
NL7703502A NL7703502A (nl) 1972-09-08 1977-03-31 Scheermeseenheid met meer dan een snijrand.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US287513A US3863340A (en) 1972-09-08 1972-09-08 Plural edge shaving system

Publications (1)

Publication Number Publication Date
US3863340A true US3863340A (en) 1975-02-04

Family

ID=23103235

Family Applications (1)

Application Number Title Priority Date Filing Date
US287513A Expired - Lifetime US3863340A (en) 1972-09-08 1972-09-08 Plural edge shaving system

Country Status (5)

Country Link
US (1) US3863340A (fr)
BE (1) BE804415A (fr)
BR (1) BR7306936D0 (fr)
CA (1) CA1003628A (fr)
ZA (1) ZA735905B (fr)

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938250A (en) * 1974-05-15 1976-02-17 The Gillette Company Disposable blade unit
US4146958A (en) * 1976-10-15 1979-04-03 Warner-Lambert Company Safety razor
US4407067A (en) * 1980-10-06 1983-10-04 The Gillette Company Shaving implement
US6216349B1 (en) * 1993-09-29 2001-04-17 The Gillette Company Safety razors
US6276062B1 (en) * 1998-04-01 2001-08-21 American Safety Razor Corporation Triple blade safety razor
WO2002051599A1 (fr) * 2000-12-22 2002-07-04 Koninklijke Philips Electronics N.V. Tete de rasage et rasoir muni d'une telle tete de rasage
US20040235182A1 (en) * 2003-04-02 2004-11-25 Jones Ronald M. Adhered membranes retaining porosity and biological activity
US20050015991A1 (en) * 2002-04-24 2005-01-27 Eveready Battery Company, Inc. Razor cartridge
US20050198837A1 (en) * 2004-03-11 2005-09-15 Stephen Rawle Shaving razors with multiple blades
US20100077618A1 (en) * 2008-09-29 2010-04-01 Mark Peterson Razor cartridges with perforated blade assemblies
US20100077617A1 (en) * 2008-09-29 2010-04-01 Mark Peterson Razors and razor cartridges with a decreased total interblade span
US20100187276A1 (en) * 2007-11-21 2010-07-29 Masaki Ohmura Optical fiber cutting device, optical fiber cutting method, and optical fiber cutting blade member
WO2011062881A1 (fr) * 2009-11-18 2011-05-26 The Gillette Company Lames pour rasoirs
WO2011062760A1 (fr) * 2009-11-18 2011-05-26 The Gillette Company Lames pour rasoirs
US20110162209A1 (en) * 2010-01-06 2011-07-07 Kevin James Wain Blades for Shaving Razors
US20160158949A1 (en) * 2014-12-08 2016-06-09 The Gillette Company Razor Cartridge Guard Structure
US20160158948A1 (en) * 2014-12-08 2016-06-09 The Gillette Company Razor Cartridge Guard Structure
US20200061860A1 (en) * 2018-08-23 2020-02-27 Elizabeth Ward Rookie razor
EP3895861A1 (fr) 2020-04-16 2021-10-20 GFD Gesellschaft für Diamantprodukte mbH Dispositif de rasage
EP3895857A1 (fr) 2020-04-16 2021-10-20 GFD Gesellschaft für Diamantprodukte mbH Dispositif de rasage
US20210323180A1 (en) * 2020-04-16 2021-10-21 The Gillette Company Llc Razor cartridge
US20210323181A1 (en) * 2020-04-16 2021-10-21 The Gillette Company Llc Razor blade
US20210387366A1 (en) * 2020-06-12 2021-12-16 Bic Violex S.A. Refillable shaving head, blade storage, and shaver
US11318632B2 (en) * 2016-07-06 2022-05-03 Bic-Violex Sa Razor system
WO2023090955A1 (fr) * 2021-11-19 2023-05-25 주식회사 도루코 Lame de rasage
KR20230081311A (ko) * 2021-11-30 2023-06-07 주식회사 도루코 면도날
US11759965B2 (en) 2020-04-16 2023-09-19 The Gillette Company Llc Multi-layer coatings for a razor blade
US20230373122A1 (en) * 2022-05-20 2023-11-23 The Gillette Company Llc Non-fluorinated organic coating material for a razor blade
US20240123642A1 (en) * 2019-07-31 2024-04-18 The Gillette Company Llc Razors and razor cartridges with colored blades

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2151265A (en) * 1937-07-03 1939-03-21 Holger V Clausen Safety razor
US2319980A (en) * 1939-09-25 1943-05-25 Jardins Edmund L Des Safety razor
US2715267A (en) * 1952-08-26 1955-08-16 Gerald E Force Safety razors
US3262206A (en) * 1962-11-28 1966-07-26 Harry F Tomek Razor blades
US3514856A (en) * 1967-10-30 1970-06-02 Corning Glass Works Razor blade configuration
US3786563A (en) * 1971-08-31 1974-01-22 Gillette Co Shaving system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2151265A (en) * 1937-07-03 1939-03-21 Holger V Clausen Safety razor
US2319980A (en) * 1939-09-25 1943-05-25 Jardins Edmund L Des Safety razor
US2715267A (en) * 1952-08-26 1955-08-16 Gerald E Force Safety razors
US3262206A (en) * 1962-11-28 1966-07-26 Harry F Tomek Razor blades
US3514856A (en) * 1967-10-30 1970-06-02 Corning Glass Works Razor blade configuration
US3786563A (en) * 1971-08-31 1974-01-22 Gillette Co Shaving system

Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938250A (en) * 1974-05-15 1976-02-17 The Gillette Company Disposable blade unit
US4146958A (en) * 1976-10-15 1979-04-03 Warner-Lambert Company Safety razor
US4407067A (en) * 1980-10-06 1983-10-04 The Gillette Company Shaving implement
US6216349B1 (en) * 1993-09-29 2001-04-17 The Gillette Company Safety razors
US20040200074A1 (en) * 1993-09-29 2004-10-14 The Gillette Company, A Delaware Corporation Safety razors
US20060026842A1 (en) * 1993-09-29 2006-02-09 Bernard Gilder Safety razors
US6276062B1 (en) * 1998-04-01 2001-08-21 American Safety Razor Corporation Triple blade safety razor
WO2002051599A1 (fr) * 2000-12-22 2002-07-04 Koninklijke Philips Electronics N.V. Tete de rasage et rasoir muni d'une telle tete de rasage
US20020088122A1 (en) * 2000-12-22 2002-07-11 Jasper Zuidervaart Shaving head and shaver provided with such a shaving head
US6655030B2 (en) * 2000-12-22 2003-12-02 Koninklijke Philips Electronics N.V. Shaving head and shaver provided with such a shaving head
US20050015991A1 (en) * 2002-04-24 2005-01-27 Eveready Battery Company, Inc. Razor cartridge
US20040235182A1 (en) * 2003-04-02 2004-11-25 Jones Ronald M. Adhered membranes retaining porosity and biological activity
US20050198837A1 (en) * 2004-03-11 2005-09-15 Stephen Rawle Shaving razors with multiple blades
US20100187276A1 (en) * 2007-11-21 2010-07-29 Masaki Ohmura Optical fiber cutting device, optical fiber cutting method, and optical fiber cutting blade member
US20100077618A1 (en) * 2008-09-29 2010-04-01 Mark Peterson Razor cartridges with perforated blade assemblies
US20100077617A1 (en) * 2008-09-29 2010-04-01 Mark Peterson Razors and razor cartridges with a decreased total interblade span
US8327545B2 (en) 2008-09-29 2012-12-11 The Gillette Company Razor cartridges with perforated blade assemblies
WO2011062881A1 (fr) * 2009-11-18 2011-05-26 The Gillette Company Lames pour rasoirs
WO2011062760A1 (fr) * 2009-11-18 2011-05-26 The Gillette Company Lames pour rasoirs
US20110162208A1 (en) * 2009-11-18 2011-07-07 Kevin James Wain Blades for Shaving Razors
US20110162209A1 (en) * 2010-01-06 2011-07-07 Kevin James Wain Blades for Shaving Razors
US20160158948A1 (en) * 2014-12-08 2016-06-09 The Gillette Company Razor Cartridge Guard Structure
US20160158949A1 (en) * 2014-12-08 2016-06-09 The Gillette Company Razor Cartridge Guard Structure
US11318632B2 (en) * 2016-07-06 2022-05-03 Bic-Violex Sa Razor system
US20200061860A1 (en) * 2018-08-23 2020-02-27 Elizabeth Ward Rookie razor
US11167438B2 (en) * 2018-08-23 2021-11-09 Elizabeth Ward Rookie razor
US20240123642A1 (en) * 2019-07-31 2024-04-18 The Gillette Company Llc Razors and razor cartridges with colored blades
US20210323181A1 (en) * 2020-04-16 2021-10-21 The Gillette Company Llc Razor blade
EP3895861A1 (fr) 2020-04-16 2021-10-20 GFD Gesellschaft für Diamantprodukte mbH Dispositif de rasage
WO2021209308A1 (fr) 2020-04-16 2021-10-21 Gfd Gesellschaft Für Diamantprodukte Mbh Dispositif de rasage
US20210323180A1 (en) * 2020-04-16 2021-10-21 The Gillette Company Llc Razor cartridge
US12576547B2 (en) * 2020-04-16 2026-03-17 The Gillette Company Llc Razor blade
EP3895857A1 (fr) 2020-04-16 2021-10-20 GFD Gesellschaft für Diamantprodukte mbH Dispositif de rasage
DE112021002343T5 (de) 2020-04-16 2023-01-26 The Gillette Company Llc Rasiervorrichtung
DE112021002355T5 (de) 2020-04-16 2023-02-16 The Gillette Company Llc Rasiervorrichtung
US12318956B2 (en) * 2020-04-16 2025-06-03 The Gillette Company Llc Razor cartridge
US20240261993A1 (en) * 2020-04-16 2024-08-08 The Gillette Company Llc Razor blade
US11969908B2 (en) * 2020-04-16 2024-04-30 The Gillette Company Llc Razor blade
US11759965B2 (en) 2020-04-16 2023-09-19 The Gillette Company Llc Multi-layer coatings for a razor blade
US20240131740A1 (en) * 2020-04-16 2024-04-25 The Gillette Company Llc Shaving device
WO2021209310A1 (fr) 2020-04-16 2021-10-21 Gfd Gesellschaft Für Diamantprodukte Mbh Dispositif de rasage
US12083693B2 (en) * 2020-06-12 2024-09-10 BIC Violex Single Member S.A. Blade storage system, shaving system, and a refillable shaving head
US20210387366A1 (en) * 2020-06-12 2021-12-16 Bic Violex S.A. Refillable shaving head, blade storage, and shaver
WO2023090955A1 (fr) * 2021-11-19 2023-05-25 주식회사 도루코 Lame de rasage
WO2023101342A1 (fr) * 2021-11-30 2023-06-08 주식회사 도루코 Lame de rasage
KR20230081311A (ko) * 2021-11-30 2023-06-07 주식회사 도루코 면도날
US20230373122A1 (en) * 2022-05-20 2023-11-23 The Gillette Company Llc Non-fluorinated organic coating material for a razor blade

Also Published As

Publication number Publication date
BE804415A (fr) 1974-03-04
CA1003628A (en) 1977-01-18
ZA735905B (en) 1974-08-28
BR7306936D0 (pt) 1974-07-25

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