Patent EP0184440B1 successfully refreshed from Google Patents.
EP0184440B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Shaving unit
Assignee: Gillette Co LLC
•
Filing: 1985-12-04
•
Granted: 1991-02-06
•
Expires: 2005-12-04
Abstract
Abstract A shaving unit comprises at least one blade and blade support structure that has external guard and cap surfaces for engaging the user's skin respectively ahead and rearwardly of the blade edge or edges. A shaving aid member of extrusion-oriented polymeric material that includes an effective amount of a water-leachable shaving aid composition is permanently and substantially immovably affixed to the support structure with an upper surface protruding above one of the external skin engaging surfaces adjacent the cutting edge of the blade.
Inventors
- 👤 Domenic V. Apprille, Jr.
- 👤 Ralph J. Chesnauskas
- 👤 Robert A. Trotta
- 👤 Chester F. Jacobson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 06:51
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/08; B26B21/14; B26B21/22; B26B21/222; B26B21/40; B26B21/44; B26B21/443
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
177 words
A razor having at least one blade (20, 24), support structure (12, 30) defining external skin engaging surfaces in front of and to the rear of the cutting edge of said blade, and a solid shaving aid member (52) that includes an effective amount of a water-leachable shaving aid composition having an upper surface (62A, 62B, 62C) protruding above an external skin engaging surface, characterized in that an aperture (42A, 42B, 42C) extends through one of said skin engaging surfaces and a seat (48) is provided adjacent an internal edge of said aperture, in that said shaving aid member (52) has a body portion (50A, 50B, 50C) of shape corresponding to said aperture, and a tab portion (56) at the base of said body portion extending laterally outwardly from said body portion, said body portion of said shaving aid member being disposed in said aperture, and in that structure in mechanical engagement with the base of said shaving aid member is provided firmly to seat said tab portion against said internal seat surface of said support structure.
Claim 2
Dependent Claim
177 words
A razor having at least one blade (20, 24), support structure (12, 30) defining external skin engaging surfaces in front of and to the rear of the cutting edge of said blade, and a solid shaving aid member (52) that includes an effective amount of a water-leachable shaving aid composition having an upper surface (62A, 62B, 62C) protruding above an external skin engaging surface, characterized in that an aperture (42A, 42B, 42C) extends through one of said skin engaging surfaces and a seat (48) is provided adjacent an internal edge of said aperture, in that said shaving aid member (52) has a body portion (50A, 50B, 50C) of shape corresponding to said aperture, and a tab portion (56) at the base of said body portion extending laterally outwardly from said body portion, said body portion of said shaving aid member being disposed in said aperture, and in that structure in mechanical engagement with the base of said shaving aid member is provided firmly to seat said tab portion against said internal seat surface of said support structure.
Claim 3
Dependent Claim
97 words
A razor having at least one razor blade (20, 24), support structure (12, 30) defining external skin engaging surfaces in front of and to the rear of the cutting edge of said blade, and a solid shaving aid member (52) that includes an effective amount of a water-leachable shaving aid composition, having aid member being permanently affixed to said support structure with an upper surface (62A, 62B, 62C) protruding above one of said external skin engaging surfaces adjacent the cutting edge of said blade, characterized in that said shaving aid member (52) is of extrusion-oriented polymeric material.
Claim 4
Dependent Claim
97 words
A razor having at least one razor blade (20, 24), support structure (12, 30) defining external skin engaging surfaces in front of and to the rear of the cutting edge of said blade, and a solid shaving aid member (52) that includes an effective amount of a water-leachable shaving aid composition, having aid member being permanently affixed to said support structure with an upper surface (62A, 62B, 62C) protruding above one of said external skin engaging surfaces adjacent the cutting edge of said blade, characterized in that said shaving aid member (52) is of extrusion-oriented polymeric material.
Claim 5
Dependent Claim
79 words
A razor according to claim 1, characterized in that a plurality of apertures (42A, 42B, 42C) extend through said one skin engaging surface (32) and are spaced along the transverse dimension of said skin engaging surface parallel to the shaving edge (26) of said blade (24), and in that said shaving aid member (52) has a corresponding plurality of spaced body portions (50A, 50B, 50C) disposed in said apertures (42A, 42B, 42C) and protruding above said skin engaging surface.
Claim 6
Dependent Claim
20 words
A razor according to claim 3, characterized in that said plurality of body portions are interconnected by tab portions (58).
Claim 7
Dependent Claim
24 words
A razor according to claim 1, characterized in said shaving aid member includes a tab portion (164) along the length of said body portion.
Claim 8
Dependent Claim
25 words
A razor according to claim 1, characterized in that said shaving aid member includes a tab portion (56) at either end of said body portion.
Claim 9
Dependent Claim
26 words
A razor according to claim 1, characterized in that said shaving aid member is composed of a polymeric blend of water soluble and insoluble polymer materials.
Claim 10
Dependent Claim
29 words
A razor according to claim 7, characterized in that said water soluble polymer is present in said shaving aid member in an amount of least fifty percent by weight.
Claim 11
Dependent Claim
26 words
A razor according to claim 8, characterized in that said polymer blend has a molecular weight in the range of one hundred thousand to six million.
Claim 12
Dependent Claim
48 words
A razor according to claim 2, characterized in that said shaving aid member is composed of a polymer blend of water soluble and insoluble polymer materials, and said water soluble polymer is present in said shaving aid member in an amount of at least fifty percent by weight.
Claim 13
Dependent Claim
55 words
A razor according to claim 8 or claim 10, characterized in that said polymer blend includes a water soluble polymeric material selected from the class consisting of polyethylene oxide, polyvinyl pyrrolidone, polyacrylamides, hydroxypropyl cellulose, polyvinyl imidazonline and polyhydroxyethylmethacrylate and a water insoluble polymeric material selected from the class consisting of polyethylene, polypropylene, polystyrene and polyacetal.
Claim 14
Dependent Claim
25 words
A razor according to claim 1 or claim 11, characterized in that said shaving aid member is a slice from an elongated extruded member (70).
Claim 15
Dependent Claim
19 words
A razor according to claim 12, characterized in that said elongated extruded member is of shaped rod form (180).
Claim 16
Dependent Claim
19 words
A razor according to claim 12, characterized in that said elongated extruded member is of convoluted sheet form (70).
Claim 17
Dependent Claim
126 words
A razor according to claims 11 and 10 characterized in that said support structure has a through aperture (42A, 42B, 42C) in said one skin engaging surface that has a seat surface (48) adjacent an internal edge of said aperture, and in that said shaving aid member (52) has a body portion (50A, 50B, 50C) of shape corresponding to said aperture and a tab portion (56), the body of said shaving aid member being disposed in said aperture and an upper surface of said body portion protruding above said external skin engaging surface and structure in mechanical engagement with the base of said shaving aid member (52) that firmly seats said tab portion (56) against said internal seat surface (48) of said support structure (12, 30).
Claim 18
Dependent Claim
50 words
A razor according to claim 1 or claim 15, characterized in that the area of said upper surface of said shaving aid member is in the range of 20-70 square millimeters, and in that said upper surface protrudes at least about 0.1 millimeter above said one external skin engaging surface.
Claim 19
Dependent Claim
84 words
A razor according to claim 16, characterized in that said skin engaging surface (34) has a plurality of said through apertures (42A, 42B, 42C) spaced along the transverse dimension of said skin engaging surface parallel to the shaving edge (23, 26) of said blade (20, 24), said shaving aid member has a corresponding plurality of spaced body portions (50A, 50B, 50C) disposed in said apertures and said plural body portions are interconnected by tab portions (58) and protrude above said skin engaging surface 34).
Claim 20
Dependent Claim
23 words
A razor according to claim 17, characterized in that said shaving aid member is a slice (80) from an elongated extruded member (70).
Claim 21
Dependent Claim
36 words
A razor according to claim 18, characterized in that said elongated extruded member is of shaped rod form (180) and said shaving aid member includes a tab portion (164) along the rear of said body pion.
Claim 22
Dependent Claim
36 words
A razor according to claim 18, characterized in that said elongated extruded member is of convoluted sheet form (70) and said shaving aid member includes a tab portion (56) at either end of said body portion.
Claim 23
Dependent Claim
41 words
A razor according to claim 11, characterized in that said water soluble polymer is polyethylene oxide and is present in said shaving aid member in a quantity sufficient to provide effective shaving assistance for the entire expected life of said blade.
Claim 24
Dependent Claim
102 words
A razor according to claim 15, characterized in that said one skin engaging surface (34) have a plurality of said through apertures (42A, 42B, 42C) spaced along the transverse dimension of said skin engaging surface parallel to the shaving edge (22, 26) of said blade (20, 24), said shaving aid member has a corresponding plurality of spaced body portions are interconnected by tab portions (58), and a portion of said razor blade (24) is in mechanical engagement with the base of said shaving aid member and firmly seats said tab portions (56, 58) against said internal seat surface of said support structure.
Claim 25
Independent Claim
104 words
A method of manufacturing a razor having a razor blade (20, 24) and support structure (12, 30) defining external skin engaging surfaces in front of and to the rear of the cutting edge of said blade, said method including the step of affixing a shaving aid member (52) to said support structure with an upper surface (62A, 62B, 62C) that protrudes above one of said external skin engaging surfaces adjacent the cutting edge of said blade and being characterized by the step of extruding a polymeric material that includes an effective amount of a water-leachable shaving aid composition to form said shaving aid member.
Claim 26
Independent Claim
104 words
A method of manufacturing a razor having a razor blade (20, 24) and support structure (12, 30) defining external skin engaging surfaces in front of and to the rear of the cutting edge of said blade, said method including the step of affixing a shaving aid member (52) to said support structure with an upper surface (62A, 62B, 62C) that protrudes above one of said external skin engaging surfaces adjacent the cutting edge of said blade and being characterized by the step of extruding a polymeric material that includes an effective amount of a water-leachable shaving aid composition to form said shaving aid member.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.