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US3815233A Expired / Lapsed US ⏱️ 0.0 years remaining

Shaving cartridges

Assignee: WOODMONT IND Inc
•
Filing: 1972-09-05
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Granted: 1974-06-11
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Expires: 1992-09-05
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Abstract

Abstract In a shaving cartridge for detachable mounting on a holding member which includes a handle, the combination of a rigid plastic base member securable to the holding member, a rigid plastic bridge member, and a razor blade permanently sandwiched between the base and bridge members. A plurality of projections on the bridge member are received through superposed apertures of the base member and blade, the heads of the projections being secured to the underside of the base member. The bridge member has a portion at each end which extends transversely of and over the cutting edge of the blade, thereby providing a pair of abutments for locating the blade. During assembly of the cartridge the cutting edge of the blade is aligned against the pair of abutments by application of a magnetic field, the assembly being consolidated while the blade is thus magnetically aligned.

Inventors

  • 👤 H Carroll

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 06:17
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/08; B26B21/14; B26B21/16; B26B21/165; B26B21/40; B26B21/4012; B26B21/4068; F; F16; F16B; F16B2200/00; F16B2200/30; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49934

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 313 words
In a shaving cartridge the combination of: a base member adapted for releasable securing to a holding member, a bridge member, and a razor blade permanently sandwiched between said base and bridge members; wherein said base member comprises a generally rectangular, elongated, rigid plastic body; wherein said base member and blade have a plurality of apertures spaced so as to be concentric when superposed; wherein said bridge member comprises a generally rectangular, elongated, rigid plastic body shaped to expose along its forward lengthwise edge the cutting edge of said blade, said bridge member having a portion at each end thereof extending transversely of and over the cutting edge of said blade to thereby form a pair of abutments for locating said blade; said bridge member having a plurality of projections positioned to be received through the apertures of said base member and said blade, the heads of said projections being secured to the underside of said base member; the portions of the apertures of said base member which are adjacent the lower face of said blade having enlarged diameters and said bridge member having annular cutouts surrounding the bases of said projections adjacent the upper face of said blade, whereby the remaining portions of said base member between said projections are resiliently biased by said heads toward the lower face of said blade so as to clamp said blade between said base member and said bridge member; and an elongated clip-like member shaped for seating in the underside of said base member, said clip-like member having depending longitudinal edges for mating with said holding member whereby said base member is securable to said holding member; said clip-like member having a plurality of apertures for receiving said projections, and resilient portions between said longitudinal edges, the peripheries of said apertures being resiliently biased by said heads against said remaining portions of said base member.
Claim 2
Dependent Claim 313 words
In a shaving cartridge the combination of: a base member adapted for releasable securing to a holding member, a bridge member, and a razor blade permanently sandwiched between said base and bridge members; wherein said base member comprises a generally rectangular, elongated, rigid plastic body; wherein said base member and blade have a plurality of apertures spaced so as to be concentric when superposed; wherein said bridge member comprises a generally rectangular, elongated, rigid plastic body shaped to expose along its forward lengthwise edge the cutting edge of said blade, said bridge member having a portion at each end thereof extending transversely of and over the cutting edge of said blade to thereby form a pair of abutments for locating said blade; said bridge member having a plurality of projections positioned to be received through the apertures of said base member and said blade, the heads of said projections being secured to the underside of said base member; the portions of the apertures of said base member which are adjacent the lower face of said blade having enlarged diameters and said bridge member having annular cutouts surrounding the bases of said projections adjacent the upper face of said blade, whereby the remaining portions of said base member between said projections are resiliently biased by said heads toward the lower face of said blade so as to clamp said blade between said base member and said bridge member; and an elongated clip-like member shaped for seating in the underside of said base member, said clip-like member having depending longitudinal edges for mating with said holding member whereby said base member is securable to said holding member; said clip-like member having a plurality of apertures for receiving said projections, and resilient portions between said longitudinal edges, the peripheries of said apertures being resiliently biased by said heads against said remaining portions of said base member.
Claim 3
Dependent Claim 37 words
A shaving cartridge as in claim 1 wherein said base member has a cavity opening to the underside thereof, said clip-like member further including a plurality of upwardly extending tabs, said tabs being received in said cavity.
Claim 4
Dependent Claim 23 words
A shaving cartridge as in claim 2 wherein said tabs contain the clip-like member apertures to receive the projections of the bridge member.
Claim 5
Dependent Claim 45 words
A shaving cartridge as in claim 1 wherein said base member has a cavity therein opening to the underside thereof, said clip-like member further including a plurality of upwardly extending tabs adapted for resilient bias against the underside of said base member within said cavity.
Claim 6
Dependent Claim 20 words
A shaving cartridge as in claim 4 wherein the apertures in said clip-like member alternate in position with said tabs.
Claim 7
Dependent Claim 24 words
A shaving cartridge as in claim 1 wherein the depending longitudinal edges of said clip are shaped for sliding eNgagement with said holding member.
Claim 8
Dependent Claim 27 words
A shaving cartridge as in claim 6 wherein said clip has an abutment at one end whereby said clip may be centrally positioned on said holding member.
Claim 9
Dependent Claim 27 words
A shaving cartridge as in claim 6 wherein said depending longitudinal edges of said clip are shaped also for hooking and pivoting engagement with said holding member.
Claim 10
Dependent Claim 234 words
In a shaving cartridge the combination of: a base member adapted for releasable securing to a holding member, a bridge member, and a razor blade permanently sandwiched between said base and bridge members; wherein said base member comprises a generally rectangular, elongated, rigid plastic body; wherein said base member and blade have a plurality of apertures spaced so as to be concentric when superposed; wherein said bridge member comprises a generally rectangular, elongated, rigid plastic body shaped to expose along its forward lengthwise edge the cutting edge of said blade, said bridge member having a portion at each end thereof extending transversely of and over the cutting edge of said blade to thereby form a pair of abutments for locating said blade; said bridge member having a plurality of projections positioned to be received through the apertures of said base member and said blade, the heads of said projections being secured to the underside of said base member, and an elongated clip-like member shaped for seating in the underside of said base member, said clip-like member having depending longitudinal edges for mating with said holding member whereby said base member is securable to said holding member; said clip-like member having a plurality of apertures for receiving said projections, and resilient portions between said longitudinal edges, the peripheries of said apertures being resiliently biased by said heads against said remaining portions of said base member.
Claim 11
Dependent Claim 234 words
In a shaving cartridge the combination of: a base member adapted for releasable securing to a holding member, a bridge member, and a razor blade permanently sandwiched between said base and bridge members; wherein said base member comprises a generally rectangular, elongated, rigid plastic body; wherein said base member and blade have a plurality of apertures spaced so as to be concentric when superposed; wherein said bridge member comprises a generally rectangular, elongated, rigid plastic body shaped to expose along its forward lengthwise edge the cutting edge of said blade, said bridge member having a portion at each end thereof extending transversely of and over the cutting edge of said blade to thereby form a pair of abutments for locating said blade; said bridge member having a plurality of projections positioned to be received through the apertures of said base member and said blade, the heads of said projections being secured to the underside of said base member, and an elongated clip-like member shaped for seating in the underside of said base member, said clip-like member having depending longitudinal edges for mating with said holding member whereby said base member is securable to said holding member; said clip-like member having a plurality of apertures for receiving said projections, and resilient portions between said longitudinal edges, the peripheries of said apertures being resiliently biased by said heads against said remaining portions of said base member.
Claim 12
Dependent Claim 58 words
A shaving cartridge as in claim 9 wherein said base member has a cavity therein opening to the underside thereof, and wherein said clip-like member has a plurality of step-like depressions having the clip-like member apertures therein for receiving the projections of the bridge member, a portion of each of said step-like depressions being received in said cavity.

References Cited (Backward Citations)

US2563802A Cited
US2755549A Cited
US3383764A Cited
US3388831A Cited
US3579711A Cited
US3703764A Cited
US3724070A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-06-10 1977-12-10 1978-06-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-06-10 1981-12-10 1982-06-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-06-10 1985-12-10 1986-06-11 $7700.00 Window Closed / Lapsed

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