US3358538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Punch die having means to prevent return of slugs
Assignee: Warner and Swasey Co
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Filing: 1966-01-13
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Granted: 1967-12-19
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Expires: 1986-01-13
Abstract
No abstract record available.
Inventors
- 👤 Joseph G Maceyka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:01
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; B21D28/34; B21D28/02; B21D28/14; B21D28/145; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2209; Y10T83/2213; Y10T83/2218; Y10T83/929; Y10T83/9411; Y10T83/9423; Y10T83/9425; Y10T83/9437
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
FOR USE WITH A PUNCH FOR PUNCHING A HOLE IN A WORK PIECE, AND THUS CREATING A SLUG, THE INVENTION WHICH CONSISTS IN A DIE HAVING A SERIES OF OPENINGS EXTENDING THERETHROUGH, COMPRISING A STRAIGHT WALLED ENTRANCE APERTURE ADAPTED TO RECEIVE THE PUNCH, WITH CLEARANCE BETWEEN THE PUNCH AND THE WALL OF THE APERTURE, EXTENDING FROM ONE END OF THE DIE TO A POINT WITHIN THE DIE, A SLUG CHUTE OF LARGER CROSS SECTION THAN THE APERTURE, EXTENDING FROM A LOCATION NEAR SAID POINT WITHIN THE DIE AT WHICH THE
Claim 2
Dependent Claim
90 words
FOR USE WITH A PUNCH FOR PUNCHING A HOLE IN A WORK PIECE, AND THUS CREATING A SLUG, THE INVENTION WHICH CONSISTS IN A DIE HAVING A SERIES OF OPENINGS EXTENDING THERETHROUGH, COMPRISING A STRAIGHT WALLED ENTRANCE APERTURE ADAPTED TO RECEIVE THE PUNCH, WITH CLEARANCE BETWEEN THE PUNCH AND THE WALL OF THE APERTURE, EXTENDING FROM ONE END OF THE DIE TO A POINT WITHIN THE DIE, A SLUG CHUTE OF LARGER CROSS SECTION THAN THE APERTURE, EXTENDING FROM A LOCATION NEAR SAID POINT WITHIN THE DIE AT WHICH THE
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) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |