Patent US3754319A successfully refreshed from Google Patents.
US3754319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating a knife handle
Assignee: Camillus Cutlery Co
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Filing: 1972-02-18
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Granted: 1973-08-28
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Expires: 1992-02-18
Abstract
Abstract In the fabrication of knife handles having a plastic cover attached to a metal liner, the covers are molded with at least two studs projecting from the side of the cover which faces the metal liner. Holes are provided in the liner through which the studs are inserted with opposing faces of the cover and liner flush. An annular depression is formed in the cover around each stud to accommodate any burrs or protrusions of the metal liner formed while making the holes for the studs.
Inventors
- 👤 N Miori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:56
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/01; B29C66/32; B29C66/322; B21; B21D; B21D53/00; B21D53/60; B21D53/70; B29C65/00; B29C65/56; B29C65/60; B29C65/606; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/20; B29C66/21; B29C66/301; B29C66/40; B29C66/41; B29C66/50; B29C66/51; B29C66/54; B29C66/70; B29C66/74; B29C66/742; B29C66/71; B29L; B29L2031/00; B29L2031/46; B29L2031/463; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49938; Y10T29/49943
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
165 words
A method of fabricating a knife handle having a plastic outer cover and a metal liner, said method comprising: a. molding the outer cover from a suitable plastic material with at least one major surface substantially flat, at least two studs molded integrally with said cover and extending from said flat major surface, and an annular depression around each of said studs; b. forming the liner of a flat piece of metal having a desired peripheral shape, and punched holes extending therethrough of substantially the same diameter and spacing as the studs on the cover, one surface of said liner having projections or burrs around the holes formed by punching; c. placing said flat major surface of the cover in engagement with said one surface of the liner with the studs extending through the holes; and d. upsetting the ends of the studs on the opposite side of the liner from the cover, thereby forming head portions retaining said cover and liner in contacting engagement.
Claim 2
Independent Claim
165 words
A method of fabricating a knife handle having a plastic outer cover and a metal liner, said method comprising: a. molding the outer cover from a suitable plastic material with at least one major surface substantially flat, at least two studs molded integrally with said cover and extending from said flat major surface, and an annular depression around each of said studs; b. forming the liner of a flat piece of metal having a desired peripheral shape, and punched holes extending therethrough of substantially the same diameter and spacing as the studs on the cover, one surface of said liner having projections or burrs around the holes formed by punching; c. placing said flat major surface of the cover in engagement with said one surface of the liner with the studs extending through the holes; and d. upsetting the ends of the studs on the opposite side of the liner from the cover, thereby forming head portions retaining said cover and liner in contacting engagement.
Claim 3
Dependent Claim
20 words
The invention according to claim 1 wherein said ends of the studs are mechanically upset to form said head portions.
Claim 4
Dependent Claim
19 words
The invention according to claim 2 wherein said ends of the studs are mechanically upset with a vibrating hammer.
Claim 5
Dependent Claim
14 words
The invention according to claim 3 wherein said plastic is an acetal resin homopolymer.
Claim 6
Dependent Claim
47 words
The invention according to claim 1 wherein the depth of said annular depressions is great enough to accommodate average projections or burrs on said metal liner around the holes therein, whereby said cover and liner will fit in contacting engagement in spite of such projections or burrs.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |