US3348443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shearproof metal punch
Assignee: Warner and Swasey Co
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Filing: 1966-01-24
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Granted: 1967-10-24
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Expires: 1986-01-24
Abstract
No abstract record available.
Inventors
- 👤 William M Smith
- 👤 Jr Herbert F Beers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:45
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; B21D28/34; Y; Y10; Y10S; Y10S83/00; Y10S83/916; Y10T; Y10T83/00; Y10T83/869; Y10T83/8821; Y10T83/8841; Y10T83/8853; Y10T83/929; Y10T83/9411; Y10T83/9423; Y10T83/9428
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A MALE PUNCH MEMBER HAVING CUTTING EDGES WITH A PLURALITY OF CHANNELS VERTICALLY DISPOSED AROUND THE SIDES OF THE PUNCH, COMPRISING A PLURALITY OF RETRACTABLE ELEMENTS HAVING A CUTTING EDGES ON EACH ELEMENT SLIDABLY MOUNTED WITHIN THE CHANNELS OF THE PUNCH, RESILIENT SLIDABLY ACTING FROM THE PUNCH YEILDABLY MAINTAINING THE CUTTING EDGES OF THE ELEMENTS IN ADVANCE OF THE CUTTING EDGES OF THE PUNCH, SAID ELEMENTS ENTERING A FEMALE DIE, ADAPED TO COOPERATE WITH THE MALE PUNCH MEMBER, IN ADVANCE OF THE MEMBER WHEN NOT ARRESTED BY A WORKPIECE IN ORDER TO PREVENT DEFLECTION OF THE PUNCH MEMBER, THE ELEMENTS RETRACTING TO ALIGN THEIR CUTTING EDGES WITH THOSE OF THE PUNCH WHEN ARRESTED BY A WORKPIECE, WHEREIN THE SLIDABLE ELEMENTS HAVE STRAIGHT SIDES ALONG THEIR ENTIRE LENGTH WHERE SLIDABLY ENGAGED WITH THE PUNCH AND SEATING MEANS FOR THE ELEMENTS LIMITING THEIR OF ADVANCEMENT.
Claim 2
Dependent Claim
143 words
A MALE PUNCH MEMBER HAVING CUTTING EDGES WITH A PLURALITY OF CHANNELS VERTICALLY DISPOSED AROUND THE SIDES OF THE PUNCH, COMPRISING A PLURALITY OF RETRACTABLE ELEMENTS HAVING A CUTTING EDGES ON EACH ELEMENT SLIDABLY MOUNTED WITHIN THE CHANNELS OF THE PUNCH, RESILIENT SLIDABLY ACTING FROM THE PUNCH YEILDABLY MAINTAINING THE CUTTING EDGES OF THE ELEMENTS IN ADVANCE OF THE CUTTING EDGES OF THE PUNCH, SAID ELEMENTS ENTERING A FEMALE DIE, ADAPED TO COOPERATE WITH THE MALE PUNCH MEMBER, IN ADVANCE OF THE MEMBER WHEN NOT ARRESTED BY A WORKPIECE IN ORDER TO PREVENT DEFLECTION OF THE PUNCH MEMBER, THE ELEMENTS RETRACTING TO ALIGN THEIR CUTTING EDGES WITH THOSE OF THE PUNCH WHEN ARRESTED BY A WORKPIECE, WHEREIN THE SLIDABLE ELEMENTS HAVE STRAIGHT SIDES ALONG THEIR ENTIRE LENGTH WHERE SLIDABLY ENGAGED WITH THE PUNCH AND SEATING MEANS FOR THE ELEMENTS LIMITING THEIR OF ADVANCEMENT.
References Cited (Backward Citations)
US2341976A
Cited
US3086418A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |