Patent US3186284A successfully refreshed from Google Patents.
US3186284A
Expired / Lapsed
US
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Punching die set
Assignee: MINNIE PUNCH AND DIE CO Inc
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Filing: 1961-11-01
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Granted: 1965-06-01
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Expires: 1981-11-01
Abstract
No abstract record available.
Inventors
- 👤 John H Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:38
CPC Classifications
B; B21; B21D; B21D37/00; B21D37/10; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/965; Y10S411/968; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49934; Y10T29/49945; Y10T83/00; Y10T83/869; Y10T83/8821; Y10T83/8835; Y10T83/8855; Y10T83/929; Y10T83/9411; Y10T83/9423; Y10T83/9425; Y10T83/9428; Y10T83/943; Y10T83/9437; Y10T83/9457; Y10T83/9473; Y10T83/9476
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A PUNCHING DIE SET FOR FORMING PERFORATIONS IN RELATIVELY THIN MATERIAL COMPRISING A SUBSTANTIALLY FLAT PUNCH PLATE, A SUBSTANTIALLY FLAT DIE PLATE, MEANS MOUNTING THE PUNCH PLATE AND DIE PLATE IN PARALLEL FOR MOVEMENT TOWARD AND AWAY FROM EACH OTHER, THIS MOUNTING MEANS INCLUDNG GUIDE PINS AT DIAGONAL CORNERS OF THE PUNCH AND DIE PLATES FOR ALIGNMENT OF THE TWO PLATES, AT LEAST ONE APERTURE FORMED IN THE PUNCH PLATE, A PUNCH MOUNTED IN THE APERTURE OF THE PUNCH PLATE, SAID PUNCH INCLUDING A HEAD, AN UNDERCUT COLLAR AND A STEM WITH THE STEM HAVING A CROSS-SECTION APPROXIMATELY THAT OF THE APERTURE AND BEING LARGER THAN THE COLLAR BUT SMALLER THAN THE HEAD, THE PUNCH BEING SECURED IN THE PUNCH PLATE BY THE HEAD BEING FORCED INTO THE PUNCH PLATE TO DISPLACE MATERIAL OF THE PUNCH PLATE AROUND AND INTO THE UNDERCUT COLLAR, SAID DIE PLATE BEING FORMED OF RELATIVELY SOFT MATERIAL AND SAID PUNCH BEING FORMED OF RELATIVELY HARD PREHARDENED MACHINEABLE STEEL ALLOY MATERIAL.
Claim 2
Dependent Claim
165 words
A PUNCHING DIE SET FOR FORMING PERFORATIONS IN RELATIVELY THIN MATERIAL COMPRISING A SUBSTANTIALLY FLAT PUNCH PLATE, A SUBSTANTIALLY FLAT DIE PLATE, MEANS MOUNTING THE PUNCH PLATE AND DIE PLATE IN PARALLEL FOR MOVEMENT TOWARD AND AWAY FROM EACH OTHER, THIS MOUNTING MEANS INCLUDNG GUIDE PINS AT DIAGONAL CORNERS OF THE PUNCH AND DIE PLATES FOR ALIGNMENT OF THE TWO PLATES, AT LEAST ONE APERTURE FORMED IN THE PUNCH PLATE, A PUNCH MOUNTED IN THE APERTURE OF THE PUNCH PLATE, SAID PUNCH INCLUDING A HEAD, AN UNDERCUT COLLAR AND A STEM WITH THE STEM HAVING A CROSS-SECTION APPROXIMATELY THAT OF THE APERTURE AND BEING LARGER THAN THE COLLAR BUT SMALLER THAN THE HEAD, THE PUNCH BEING SECURED IN THE PUNCH PLATE BY THE HEAD BEING FORCED INTO THE PUNCH PLATE TO DISPLACE MATERIAL OF THE PUNCH PLATE AROUND AND INTO THE UNDERCUT COLLAR, SAID DIE PLATE BEING FORMED OF RELATIVELY SOFT MATERIAL AND SAID PUNCH BEING FORMED OF RELATIVELY HARD PREHARDENED MACHINEABLE STEEL ALLOY MATERIAL.
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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) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |