Patent US3222914A successfully refreshed from Google Patents.
US3222914A
Expired / Lapsed
US
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Impact apparatus
Assignee: International Electronic Corp
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Filing: 1961-09-11
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Granted: 1965-12-14
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Expires: 1981-09-11
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Monahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:29
CPC Classifications
B; B21; B21J; B21J7/00; B21J7/20; B21J7/22; B21J7/34; B21C; B21C23/00; B21C23/21; B21C23/211
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN IMPACT APPARATUS FOR EXERTING CONTROLLED FORCES UPON A MATERIAL OR WORKPIECE, THE COMBINATION OF: A FRAME; A PAIR OF HAMMERS SUPPORTED UPON SAID FRAME FOR SLIDABLE MOVEMENT RELATIVE TO EACH OTHER, SAID HAMMERS INCLUDING DIRECTLY OPPOSED PLATENS, SAID HAMMERS INCLUDING REVERSELY OPPOSED COAXIALLY ARRANGED, MUTUALLY AXIALLY SLIDABLE PRESSURE PORTIONS OF SAID HAMMERS COMPRISING WALLS RESPECTIVELY OPPOSITE EACH OTHER DEFINING AN ANNULAR PRESSURE CHAMBER, ONE OF SAID HAMMERS FURTHER INCLUDING AN INTERNAL RESERVOIR FOR STORAGE OF FLUID UNDER PRESSURE MOUNTED ON SAID HAMMER; SAID RESERVOIR HAVING A FLUID CAPACITY SUBSTANTIALLY EQUAL TO THE CAPACITY OF SAID PRESSURE CHAMBER, AND PASSAGE MEANS BETWEEN SAID RESER-
Claim 2
Dependent Claim
104 words
IN IMPACT APPARATUS FOR EXERTING CONTROLLED FORCES UPON A MATERIAL OR WORKPIECE, THE COMBINATION OF: A FRAME; A PAIR OF HAMMERS SUPPORTED UPON SAID FRAME FOR SLIDABLE MOVEMENT RELATIVE TO EACH OTHER, SAID HAMMERS INCLUDING DIRECTLY OPPOSED PLATENS, SAID HAMMERS INCLUDING REVERSELY OPPOSED COAXIALLY ARRANGED, MUTUALLY AXIALLY SLIDABLE PRESSURE PORTIONS OF SAID HAMMERS COMPRISING WALLS RESPECTIVELY OPPOSITE EACH OTHER DEFINING AN ANNULAR PRESSURE CHAMBER, ONE OF SAID HAMMERS FURTHER INCLUDING AN INTERNAL RESERVOIR FOR STORAGE OF FLUID UNDER PRESSURE MOUNTED ON SAID HAMMER; SAID RESERVOIR HAVING A FLUID CAPACITY SUBSTANTIALLY EQUAL TO THE CAPACITY OF SAID PRESSURE CHAMBER, AND PASSAGE MEANS BETWEEN SAID RESER-
References Cited (Backward Citations)
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US3108503A
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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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |