US3273944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die set having aluminum oxide bearing surface
Assignee: Fountainhead Corp
•
Filing: 1963-10-02
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Granted: 1966-09-20
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Expires: 1983-10-02
Abstract
No abstract record available.
Inventors
- 👤 Edwin J Hammon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:35
CPC Classifications
F; F16; F16C; F16C29/00; F16C29/02; B; B21; B21D; B21D37/00; B21D37/10; F16C33/00; F16C33/02; F16C33/04; F16C33/043; F16C2206/00; F16C2206/40; F16C2206/42; F16C2240/00; F16C2240/40; F16C2240/60; F16C2322/00; F16C2322/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A DIE SET COMPRISING A PAIR OF PUNCH AND DIESUPPORTING PLATES ARRANGED FOR RELATIVE MOVEMENT TOWARD AND FROM ONE ANOTHER; A PLURALITY OF RELATIVELY SPACED APART, SUBSTANTIALLY ALUMINUM-FREE METAL, GUIDE PINS CARRIED BY AND PROJECTING OUTWARDLY FROM ONE OF SAID PLATES; A PLURALITY OF RELATIVELY SPACED APART, TUBULAR GUIDE BUSHINGS CARRIED BY THE OTHER OF SAID PLATES AND TELESCOPING SAID GUIDE PINS; AND A LAYER OF AMORPHOUS ALUMINUM OXIDE CARRIED BY EACH OF SAID BUSHINGS AND DEFINING A BEARING SURFACE FOR EACH OF SAID PINS.
Claim 2
Dependent Claim
85 words
A DIE SET COMPRISING A PAIR OF PUNCH AND DIESUPPORTING PLATES ARRANGED FOR RELATIVE MOVEMENT TOWARD AND FROM ONE ANOTHER; A PLURALITY OF RELATIVELY SPACED APART, SUBSTANTIALLY ALUMINUM-FREE METAL, GUIDE PINS CARRIED BY AND PROJECTING OUTWARDLY FROM ONE OF SAID PLATES; A PLURALITY OF RELATIVELY SPACED APART, TUBULAR GUIDE BUSHINGS CARRIED BY THE OTHER OF SAID PLATES AND TELESCOPING SAID GUIDE PINS; AND A LAYER OF AMORPHOUS ALUMINUM OXIDE CARRIED BY EACH OF SAID BUSHINGS AND DEFINING A BEARING SURFACE FOR EACH OF SAID PINS.
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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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |