Patent US3079567A successfully refreshed from Google Patents.
Patent US3702103A successfully refreshed from Google Patents.
US3702103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-adjusting cut-off knife
Assignee: Individual
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Filing: 1971-05-24
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Granted: 1972-11-07
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Expires: 1991-05-24
Abstract
Abstract A pair of cut-off knives for stripping the lower closure of a vertical stack of closures is floated on a spring shim to be able to ride between the curl portions of closures one of whose curl is so oversized as to otherwise cause the knives to interfere with the curl portion.
Inventors
- 👤 Raymond E Price
- 👤 Clifford F Tirrell
- 👤 Richard C Adams
- 👤 Robert W George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:51
CPC Classifications
B; B21; B21D; B21D43/00; B21D43/20; B21D43/24; B65; B65G; B65G59/00; B65G59/10; B65G59/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
199 words
The method of cutting off and feeding can ends of a given nominal curl height in a can end lining machine comprising; stacking the can ends in a vertical stack; supporting the stack on slide shelves of spaced apart reciprocating feed bars where the slide shelves terminate at a point where they will pass beyond the stack upon the upstream stroke of their reciprocation; mounting and resiliently biasing upward upon the feed bars, cutoff knives, where the upward biasing is limited to a point above the slide shelf up to about 0.007 inch above the maximum curl height of the can end; moving the feed bars in an upstream direction and the cut-off knives carried thereon to cut off the lowermost can end by the cut-off knife contacting the second lowermost can end and biasing downward to enter between the said two can ends; supporting the stack on the cut-off knives and the cut-off can end on the slide shelf until the termination of the shelf permits the can end to drop off it; moving the feed bars in the downstream direction until the cut-off knives pass out from under the stack which then drops onto the slide shelf.
Claim 2
Independent Claim
199 words
The method of cutting off and feeding can ends of a given nominal curl height in a can end lining machine comprising; stacking the can ends in a vertical stack; supporting the stack on slide shelves of spaced apart reciprocating feed bars where the slide shelves terminate at a point where they will pass beyond the stack upon the upstream stroke of their reciprocation; mounting and resiliently biasing upward upon the feed bars, cutoff knives, where the upward biasing is limited to a point above the slide shelf up to about 0.007 inch above the maximum curl height of the can end; moving the feed bars in an upstream direction and the cut-off knives carried thereon to cut off the lowermost can end by the cut-off knife contacting the second lowermost can end and biasing downward to enter between the said two can ends; supporting the stack on the cut-off knives and the cut-off can end on the slide shelf until the termination of the shelf permits the can end to drop off it; moving the feed bars in the downstream direction until the cut-off knives pass out from under the stack which then drops onto the slide shelf.
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) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |