Patent US3272265A successfully refreshed from Google Patents.
US3272265A
Expired / Lapsed
US
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Rotary impact tool
Assignee: Ingersoll Rand Co
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Filing: 1964-03-26
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Granted: 1966-09-13
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Expires: 1984-03-26
Abstract
No abstract record available.
Inventors
- 👤 Charles L Schrader
- 👤 Lee W Ramstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:22
CPC Classifications
B; B25; B25B; B25B21/00; B25B21/02; B25B21/026
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
161 words
A ROTARY IMPACT MECHANISM COMPRISING: (A) A FRAME; (B) AN ANVIL ROTATABLY MOUNTED ON SAID FRAME; (C) A HAMMER ROTATABLY MOUNTED ON SAID FRAME INCLUDING MEANS MOVABLE RELATIVE TO SAID ANVIL BETWEEN AN IMPACT POSITION WHEREIN IT DELIVERS A ROTARY IMPACT TO SAID ANVIL AND A NON-IMPACT POSITION WHEREIN IT CAN ROTATE FREE OF THE ANVIL; (D) MEANS BIASING SAID MOVABLE MEANS TO SAID IMPACT POSITION; (E) A PAIR OF CAM ELEMENTS INTERCONNECTED BETWEEN SAID ANVIL AND HAMMER, ONE OF SAID CAM ELEMENTS BEING MOUNTED ON SAID ANVIL AND THE OTHER BEING MOUNTED ON SAID HAMMER, SAID CAM ELEMENTS BEING OPERATIVE IN THEIR NORMAL POSITIONS ON THEIR RESPECTIVE MOUNTING MEMBERS TO ENGAGE AND HOLD SAID MOVABLE MEANS IN SAID NON-IMPACT POSITION WHEREIN SAID MOVABLE MEANS DOES NOT IMPACT SAID ANVIL; AND (F) SAID CAM MEMBERS BEING ARRANGED TO RELEASE SAID MOVABLE MEANS AS IT ROTATIVELY APPROACHES SAID ANVIL SO THAT SAID BIASING MEANS MOVES SAID MOVABLE MEANS TO SAID IMPACT POSITION.
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |