Patent US3208759A successfully refreshed from Google Patents.
US3208759A
Expired / Lapsed
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Collet
Assignee: FIRESTONE
•
Filing: 1963-12-05
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Granted: 1965-09-28
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Expires: 1983-12-05
Abstract
No abstract record available.
Inventors
- 👤 Eugene S Firestone
- 👤 Skousgaard Chris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:02
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; F16D1/08; F16D1/09; F16D1/091; B; B23; B23Q; B23Q3/00; B23Q3/02; B23Q3/06; B23Q3/067; B23Q3/068; Y; Y10; Y10T; Y10T279/00; Y10T279/12; Y10T279/1224; Y10T279/1241; Y10T279/1249; Y10T279/1266
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A COLLET COMPRISING: A GENERALLY CYLINDRICAL BODY MEMBER; A FIRST PISTON IN SAID BODY MEMBER; MEANS FOR APPLYING AIR UNDER PRESSURE TO THE TOP OF SAID FIRST PISTON; A SECOND PISTON MOUNTED IN SAID BODY MEMBER; MEANS FOR SUPPLYING AIR TO THE BOTTOM OF SAID FIRST PISTON AND TO THE TOP OF SAID SECOND PISTON; A SLEEVE MOUNTED IN SAID BODY MEMBER AND OPERABLY CONNECTED TO SAID SECOND PISTON FOR MOVEMENT THEREWITH, SAID SLEEVE HAVING A FRUSTO-CONICAL UPPER SECTION ADAPTED TO ENGAGE THE TAPERED WALL OF A SPLIT RING COLLET TO CLOSE SAID COLLET; MEANS ASSOCIATED WITH SAID FIRST PISTON TO RAISE SAID SLEEVE ON OPERATION OF SAID FIRST PISTON; AND MEANS ASSOCIATED WITH SAID SECOND PISTON ADAPTED TO LOWER SAID SLEEVE ON OPERATION OF SAID SECOND PISTON.
Claim 2
Dependent Claim
128 words
A COLLET COMPRISING: A GENERALLY CYLINDRICAL BODY MEMBER; A FIRST PISTON IN SAID BODY MEMBER; MEANS FOR APPLYING AIR UNDER PRESSURE TO THE TOP OF SAID FIRST PISTON; A SECOND PISTON MOUNTED IN SAID BODY MEMBER; MEANS FOR SUPPLYING AIR TO THE BOTTOM OF SAID FIRST PISTON AND TO THE TOP OF SAID SECOND PISTON; A SLEEVE MOUNTED IN SAID BODY MEMBER AND OPERABLY CONNECTED TO SAID SECOND PISTON FOR MOVEMENT THEREWITH, SAID SLEEVE HAVING A FRUSTO-CONICAL UPPER SECTION ADAPTED TO ENGAGE THE TAPERED WALL OF A SPLIT RING COLLET TO CLOSE SAID COLLET; MEANS ASSOCIATED WITH SAID FIRST PISTON TO RAISE SAID SLEEVE ON OPERATION OF SAID FIRST PISTON; AND MEANS ASSOCIATED WITH SAID SECOND PISTON ADAPTED TO LOWER SAID SLEEVE ON OPERATION OF SAID SECOND PISTON.
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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |