US 6,161,287 A · Razor blade system

Abstract

A safety razor system includes an elongated housing pivotably attached to a member connecting the housing to a handle. The housing is substantially rectangular, having arcuate end portions. A plurality of razor blades and a guard member extend from the upper surface of the housing and an annular retainer clip is disposed about the periphery of the housing serving to retain the blades onto the housing and position the blades relative to the guard member. The connecting member pivotably supports the housing by four coaxial bearing surfaces contacting mating surfaces on the housing during rotation of the housing relative to the connecting member.

Claims69

Dependent claims

A safety razor system comprising

an elongated housing having a plurality of shaving blades disposed thereon, each said blade having a cutting edge extending lengthwise and upwardly from an upper surface of said housing;
a unitary annular retainer member formed of sheet metal material and disposed substantially circumferentially about the upper periphery of said housing and contacting opposite ends of each of said plurality of shaving blades;
said housing comprising an upwardly extending lip forming an upwardly opening groove disposed about the periphery of said housing, and wherein said retainer member is disposed in said groove;
and
a latch disposed on said retainer member adapted to attach to a mating portion within said groove of said housing member to restrain said retainer member against upward movement relative to said housing, said latch depending downwardly from said retainer member and being permanently deformed to position said housing between said latch and said retainer member,
whereby movement of each said blade cutting edge of said plurality of shaving blades in the upward direction is restricted by contact with said unitary retainer member.

3 more elements

A safety razor system comprising:

an elongated housing having at least one shaving blade disposed thereon, each said at least one blade having a cutting edge extending lengthwise and upwardly from an upper surface of said housing;
a unitary retainer member disposed about the upper periphery of said housing and contacting opposite ends of each said shaving blade;
and
a latch disposed on said retainer member adapted to attach to a mating portion of said housing member to restrain said retainer member against upward movement relative to said housing, whereby movement of each said blade cutting edge in the upward direction is restricted by contact with said unitary retainer member,
said housing comprising wall structure forming a pair of cavities, one disposed adjacent a lower surface of each end of said housing;
an interconnect member for pivotably connecting said housing to a razor handle;
said interconnect member comprising a unitary body having a pair of opposed arms at either side thereof extending outwardly lengthwise of said housing;
and
a pair of first and second opposed coaxial bearing surfaces disposed at each side of said interconnect member body for contacting said housing;
each of said first bearing surfaces being disposed on a respective arm and received in a respective said cavity and each of said second bearing surfaces being disposed on said body inwardly of said first bearing surfaces;
each said first bearing surface being located for contacting a portion of a said cavity wall structure and each said second bearing surface being located for contact with an under surface of said housing.

8 more elements

A unitary annular retainer clip for assembly onto a wet shaving razor housing receiving razor blades, comprising:

an annular body having upper and under surfaces and a pair of opposed longitudinal portions and a pair of opposed lateral portions joined thereto defining a blade-receiving pocket therebetween having an inner peripheral annular margin;
an annular rim depending from the annular body longitudinal and lateral portions, the annular rim defining between sides thereof a razor housing-receiving pocket;
a first plurality of at least three downwardly directed planar first datum surfaces formed at respective first discrete locations on the under surface of the longitudinal portions and extending along the longitudinal portions towards the lateral portions, the first discrete locations being at a different elevation relative adjacent regions of the under surface and having a collective area less than a majority of a surface area of the under surface;
a plurality of latch elements formed on the under surface, said latch elements being positionable at least partially upwardly facing and also being in spaced relation to the first plurality of datum surfaces, whereby the latch elements restrain the annular retainer clip from movement relative to an object positioned within the annular rim and between the latch elements and the under surface;
and
a second plurality of downwardly directed elongated planar second datum surfaces formed at respective second discrete locations disposed on the under surface of both the opposed lateral portions adjacent the inner peripheral margin of the blade-receiving pocket for contacting respective blade ends and extending generally parallel to the lateral portions, the second discrete locations being at a different elevation relative adjacent regions of the under surface;
whereby during assembly of the annular retainer clip onto a housing containing razor blades, the second plurality of datum surfaces and therewith the upward location of the razor blades are positioned at a spatial orientation relative to the housing determined by the first plurality of datum surfaces.

4 more elements

A unitary annular retainer clip for assembly onto a wet shaving razor housing, comprising:

an annular body having upper and under surfaces and a pair of opposed longitudinal portions and a pair of opposed lateral portions joined thereto defining a blade-receiving pocket therebetween having an inner peripheral annular margin;
a first plurality of downwardly directed planar first datum surfaces formed on the under surface of the longitudinal portions and extending along the longitudinal portions towards the lateral portions, the first datum surfaces being distributed on both sides of a medial plane dividing the pair of longitudinal portions and having a collective area that is substantially less than an area of the under surface on which the first datum surfaces are disposed;
a plurality of latch elements formed on the under surface, said latch elements being permanently deformable to an at least partially upwardly facing position and also being in spaced relation to the first plurality of datum surfaces, whereby the latch elements restrain the annular retainer clip from movement relative to an object positioned between the latch elements and the under surface;
and
a second plurality of downwardly directed elongated planar second datum surfaces formed on the under surface of the lateral portions adjacent the inner peripheral margin of the blade-receiving pocket and extending generally parallel to the lateral portions;
whereby during assembly of the annular retainer clip onto a housing containing razor blades, the second plurality of datum surfaces is positioned at a spatial orientation relative to the housing determined by the first plurality of datum surfaces, and
wherein the retainer clip is formed of sheet metal material.

4 more elements

A safety razor system comprising:

an elongated housing having at least one shaving blade disposed thereon, each said at least one blade having a cutting edge extending lengthwise and upwardly from an upper surface of said housing, said housing upper surface having at least two skin-engaging surfaces disposed respectively before and behind said at least one blade;
a unitary annular retainer member having a pair of opposed longitudinal portions and a pair of opposed lateral portions joined thereto defining an open pocket therebetween and having an annular rim depending from the annular body longitudinal and lateral portions, the annular rim defining between sides thereof a razor housing-receiving pocket,
said annular retainer member being disposed substantially circumferentially about the periphery of said housing in front of and behind said at least two skin-engaging surfaces and contacting opposite ends of each said blade, said open pocket substantially unobstructing the at least two skin-engaging surfaces projecting upwardly from the housing;
and
a latch disposed on said retainer member adapted to attach to a mating portion of said housing member to restrain said retainer member against upward movement relative to said housing, said latch depending downwardly from said retainer member and being permanently deformed to position said housing within the annular rim and between the latch and the retainer member;
wherein said housing is substantially of rectangular shape in plan form having arcuate end portions;
said housing upper surface and said retainer member being arcuate in the transverse direction, and
said retainer member substantially overlying the housing peripheral upper, side and end surfaces, thereby forming a substantially continuous skin contacting surface with the at least two skin-engaging surfaces of the housing.

5 more elements

Dependencies are inferred from the claim text.

Abstract

Claims69

Dependent claims

A safety razor system comprising

an elongated housing having a plurality of shaving blades disposed thereon, each said blade having a cutting edge extending lengthwise and upwardly from an upper surface of said housing;
a unitary annular retainer member formed of sheet metal material and disposed substantially circumferentially about the upper periphery of said housing and contacting opposite ends of each of said plurality of shaving blades;
said housing comprising an upwardly extending lip forming an upwardly opening groove disposed about the periphery of said housing, and wherein said retainer member is disposed in said groove;
and
a latch disposed on said retainer member adapted to attach to a mating portion within said groove of said housing member to restrain said retainer member against upward movement relative to said housing, said latch depending downwardly from said retainer member and being permanently deformed to position said housing between said latch and said retainer member,
whereby movement of each said blade cutting edge of said plurality of shaving blades in the upward direction is restricted by contact with said unitary retainer member.

3 more elements

A safety razor system comprising:

an elongated housing having at least one shaving blade disposed thereon, each said at least one blade having a cutting edge extending lengthwise and upwardly from an upper surface of said housing;
a unitary retainer member disposed about the upper periphery of said housing and contacting opposite ends of each said shaving blade;
and
a latch disposed on said retainer member adapted to attach to a mating portion of said housing member to restrain said retainer member against upward movement relative to said housing, whereby movement of each said blade cutting edge in the upward direction is restricted by contact with said unitary retainer member,
said housing comprising wall structure forming a pair of cavities, one disposed adjacent a lower surface of each end of said housing;
an interconnect member for pivotably connecting said housing to a razor handle;
said interconnect member comprising a unitary body having a pair of opposed arms at either side thereof extending outwardly lengthwise of said housing;
and
a pair of first and second opposed coaxial bearing surfaces disposed at each side of said interconnect member body for contacting said housing;
each of said first bearing surfaces being disposed on a respective arm and received in a respective said cavity and each of said second bearing surfaces being disposed on said body inwardly of said first bearing surfaces;
each said first bearing surface being located for contacting a portion of a said cavity wall structure and each said second bearing surface being located for contact with an under surface of said housing.

8 more elements

A unitary annular retainer clip for assembly onto a wet shaving razor housing receiving razor blades, comprising:

an annular body having upper and under surfaces and a pair of opposed longitudinal portions and a pair of opposed lateral portions joined thereto defining a blade-receiving pocket therebetween having an inner peripheral annular margin;
an annular rim depending from the annular body longitudinal and lateral portions, the annular rim defining between sides thereof a razor housing-receiving pocket;
a first plurality of at least three downwardly directed planar first datum surfaces formed at respective first discrete locations on the under surface of the longitudinal portions and extending along the longitudinal portions towards the lateral portions, the first discrete locations being at a different elevation relative adjacent regions of the under surface and having a collective area less than a majority of a surface area of the under surface;
a plurality of latch elements formed on the under surface, said latch elements being positionable at least partially upwardly facing and also being in spaced relation to the first plurality of datum surfaces, whereby the latch elements restrain the annular retainer clip from movement relative to an object positioned within the annular rim and between the latch elements and the under surface;
and
a second plurality of downwardly directed elongated planar second datum surfaces formed at respective second discrete locations disposed on the under surface of both the opposed lateral portions adjacent the inner peripheral margin of the blade-receiving pocket for contacting respective blade ends and extending generally parallel to the lateral portions, the second discrete locations being at a different elevation relative adjacent regions of the under surface;
whereby during assembly of the annular retainer clip onto a housing containing razor blades, the second plurality of datum surfaces and therewith the upward location of the razor blades are positioned at a spatial orientation relative to the housing determined by the first plurality of datum surfaces.

4 more elements

A unitary annular retainer clip for assembly onto a wet shaving razor housing, comprising:

an annular body having upper and under surfaces and a pair of opposed longitudinal portions and a pair of opposed lateral portions joined thereto defining a blade-receiving pocket therebetween having an inner peripheral annular margin;
a first plurality of downwardly directed planar first datum surfaces formed on the under surface of the longitudinal portions and extending along the longitudinal portions towards the lateral portions, the first datum surfaces being distributed on both sides of a medial plane dividing the pair of longitudinal portions and having a collective area that is substantially less than an area of the under surface on which the first datum surfaces are disposed;
a plurality of latch elements formed on the under surface, said latch elements being permanently deformable to an at least partially upwardly facing position and also being in spaced relation to the first plurality of datum surfaces, whereby the latch elements restrain the annular retainer clip from movement relative to an object positioned between the latch elements and the under surface;
and
a second plurality of downwardly directed elongated planar second datum surfaces formed on the under surface of the lateral portions adjacent the inner peripheral margin of the blade-receiving pocket and extending generally parallel to the lateral portions;
whereby during assembly of the annular retainer clip onto a housing containing razor blades, the second plurality of datum surfaces is positioned at a spatial orientation relative to the housing determined by the first plurality of datum surfaces, and
wherein the retainer clip is formed of sheet metal material.

4 more elements

A safety razor system comprising:

an elongated housing having at least one shaving blade disposed thereon, each said at least one blade having a cutting edge extending lengthwise and upwardly from an upper surface of said housing, said housing upper surface having at least two skin-engaging surfaces disposed respectively before and behind said at least one blade;
a unitary annular retainer member having a pair of opposed longitudinal portions and a pair of opposed lateral portions joined thereto defining an open pocket therebetween and having an annular rim depending from the annular body longitudinal and lateral portions, the annular rim defining between sides thereof a razor housing-receiving pocket,
said annular retainer member being disposed substantially circumferentially about the periphery of said housing in front of and behind said at least two skin-engaging surfaces and contacting opposite ends of each said blade, said open pocket substantially unobstructing the at least two skin-engaging surfaces projecting upwardly from the housing;
and
a latch disposed on said retainer member adapted to attach to a mating portion of said housing member to restrain said retainer member against upward movement relative to said housing, said latch depending downwardly from said retainer member and being permanently deformed to position said housing within the annular rim and between the latch and the retainer member;
wherein said housing is substantially of rectangular shape in plan form having arcuate end portions;
said housing upper surface and said retainer member being arcuate in the transverse direction, and
said retainer member substantially overlying the housing peripheral upper, side and end surfaces, thereby forming a substantially continuous skin contacting surface with the at least two skin-engaging surfaces of the housing.

5 more elements

Dependencies are inferred from the claim text.

Razor blade system

Life of this patent

Abstract

Claims69

Razor blade system

Life of this patent

Abstract

Claims69