US3141362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jaw operating structure for a power-operated wrench
Assignee: Jackson Memorial Hospital
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Filing: 1960-05-12
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Granted: 1964-07-21
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Expires: 1980-05-12
Abstract
No abstract record available.
Inventors
- 👤 Tamny Simon
- 👤 Zenas V Weisel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:41
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/16; E21B19/167
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
IN A POWER TONG FOR GRIPPING AN OBJECT FORMED WITH SIDE FACES, THE COMBINATION OF, A ROTATABLE POWER MEANS FORMED WITH A CENTRAL OPENING AND HAVING CAMMING MEANS ROTATABLE THEREWITH, DRIVEN MEANS POSITIONED IN SAID POWER MEANS FOR RELATIVE ROTATION THEREBY AND PROVIDED WITH AN OPENING FOR RECEIVING SAID OBJECT, GRIPPING MEANS MOVABLY CONNECTED TO SAID DRIVEN MEANS AND FORMED WITH JAW SURFACES FOR FITTING SAID SIDE FACES, SAID GRIPPING MEANS FURTHER HAVING MEANS COOPERABLE WITH SAID CAMMING MEANS SO THAT UPON ROTATION OF SAID POWER MEANS WITH RESPECT TO SAID DRIVEN MEANS SAID JAW SURFACES ARE MOVED INTO FITTING ENGAGEMENT WITH SAID SIDE FACES, AND MEANS FOR ADJUSTING SAID JAW SURFACES BY MINIMIZING FORCES FOR GRIPPING SAID OBJECT AND MAXIMIZING FORCES FOR ORIENTING SAID JAW SURFACES WITH SAID SIDE FACES SO THAT SAID JAW SURFACES ARE ORIENTED WITH SAID SIDE FACES PRIOR TO MAXIMUM FORCE ENGAGEMENT OF SAID JAW SURFACES WITH SAID SIDE FACES.
Claim 2
Dependent Claim
155 words
IN A POWER TONG FOR GRIPPING AN OBJECT FORMED WITH SIDE FACES, THE COMBINATION OF, A ROTATABLE POWER MEANS FORMED WITH A CENTRAL OPENING AND HAVING CAMMING MEANS ROTATABLE THEREWITH, DRIVEN MEANS POSITIONED IN SAID POWER MEANS FOR RELATIVE ROTATION THEREBY AND PROVIDED WITH AN OPENING FOR RECEIVING SAID OBJECT, GRIPPING MEANS MOVABLY CONNECTED TO SAID DRIVEN MEANS AND FORMED WITH JAW SURFACES FOR FITTING SAID SIDE FACES, SAID GRIPPING MEANS FURTHER HAVING MEANS COOPERABLE WITH SAID CAMMING MEANS SO THAT UPON ROTATION OF SAID POWER MEANS WITH RESPECT TO SAID DRIVEN MEANS SAID JAW SURFACES ARE MOVED INTO FITTING ENGAGEMENT WITH SAID SIDE FACES, AND MEANS FOR ADJUSTING SAID JAW SURFACES BY MINIMIZING FORCES FOR GRIPPING SAID OBJECT AND MAXIMIZING FORCES FOR ORIENTING SAID JAW SURFACES WITH SAID SIDE FACES SO THAT SAID JAW SURFACES ARE ORIENTED WITH SAID SIDE FACES PRIOR TO MAXIMUM FORCE ENGAGEMENT OF SAID JAW SURFACES WITH SAID SIDE FACES.
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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) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |