Patent US3583262A successfully refreshed from Google Patents.
US3583262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making disposable safety razor
Assignee: Individual
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Filing: 1968-11-18
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Granted: 1971-06-08
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Expires: 1988-11-18
Abstract
Abstract A plastic safety razor has a body formed of a head and a handle molded in one piece of resilient plastic material. The head is molded with a thin slot open at the front of the head and at opposite ends of the head, and the face walls of the slot are spaced apart by the thickness of a blade adapted to be held within the slot. The slot is closed by a back wall which forms a rear abutment for a single edge blade held in the head. The blade has blunt edges at the extremities of its sharpened edge and is pushed endwise into the slot and by engagement with the blunt edges is seated rearwardly against the back abutment wall of the slot.
Inventors
- 👤 Roy E Mullen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:38
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/02; B26B21/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49945
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
286 words
A method making a molded, one-piece disposable formed of resilient material to have a handle and a slotted head with a single-edged blade secured in the slot in said head, said method comprising: a. forming a two-part mold that opens and closes in the direction of said slot; b. forming a female portion of said mold to shape the back of said head; c. forming a male portion of said mold to shape the front of said head and said slot; d. configuring the surfaces of said mold portion to form a guide surface at the upper front of said head, to from said slot extending into said head a predetermined distance from the front of said guide surface to terminate in an abutment surface, and to form a plurality of fingers spaced along the underside of said head with the tops of said fingers in the plane of the bottom of said slot and curving downward in front of said guide surface; e. dimensioning said male mold portion to form said slot with the correct width and depth relative to said blade and said guide surface and said fingers so that said blade is frictionally held in said slot with its sharpened edge extending forward a proper amount for shaving when its unsharpened edge is seated against said abutment surface; f. operating said mold to form the body of said razor; g. inserting one end of said blade into an open, transverse end of said slot; h. moving said blade substantially it full length into said slot; and i. contacting said blade at a surface other than said sharp edge, and through said contact moving said blade transversely into seated engagement with said abutment surface.
Claim 2
Independent Claim
286 words
A method making a molded, one-piece disposable formed of resilient material to have a handle and a slotted head with a single-edged blade secured in the slot in said head, said method comprising: a. forming a two-part mold that opens and closes in the direction of said slot; b. forming a female portion of said mold to shape the back of said head; c. forming a male portion of said mold to shape the front of said head and said slot; d. configuring the surfaces of said mold portion to form a guide surface at the upper front of said head, to from said slot extending into said head a predetermined distance from the front of said guide surface to terminate in an abutment surface, and to form a plurality of fingers spaced along the underside of said head with the tops of said fingers in the plane of the bottom of said slot and curving downward in front of said guide surface; e. dimensioning said male mold portion to form said slot with the correct width and depth relative to said blade and said guide surface and said fingers so that said blade is frictionally held in said slot with its sharpened edge extending forward a proper amount for shaving when its unsharpened edge is seated against said abutment surface; f. operating said mold to form the body of said razor; g. inserting one end of said blade into an open, transverse end of said slot; h. moving said blade substantially it full length into said slot; and i. contacting said blade at a surface other than said sharp edge, and through said contact moving said blade transversely into seated engagement with said abutment surface.
Claim 3
Dependent Claim
20 words
The method of claim 1 wherein said contact with said blade is made adjacent the extremities of said sharpened edge.
Claim 4
Dependent Claim
27 words
The method of claim 1 including configuring said male mold portion to form said handle as a generally U-shaped channel opening toward the front of said razor.
Claim 5
Dependent Claim
51 words
The method of claim 1 including configuring said female mold portion to form a recess in the back of said head in visible communication with said abutment surface of said slot, and applying bonding material to said blade and said head in said recess for bonding said blade to said head.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |