Patent US3120961A successfully refreshed from Google Patents.
US3120961A
Expired / Lapsed
US
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Chucks
Assignee: Clarkson Engineers Ltd
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Filing: 1961-11-09
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Granted: 1964-02-11
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Expires: 1981-11-09
Abstract
No abstract record available.
Inventors
- 👤 Clarkson Frank Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:49
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/02; F16D1/04; F16D1/05; B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/20; B23B31/208; F16D1/06; F16D1/08; F16D1/09; F16D1/093; F16D1/095; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17411; Y10T279/17529; Y10T279/17547; Y10T408/00; Y10T408/94
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
214 words
A CHUCK COMPRISING A CHUCK BODY HAVING A MOUNTING SHANK AND HAVING AN AXIAL BORE OPEN AT THE LEADING END OF THE CHUCK BODY, SAID BORE HAVING AN INTERNAL THREADED PORTION; ABUTMENT MEANS PROVIDED AT THE INNER END OF SAID BORE FOR LOCATING THE END OF A TOOL SHANK RECEIVED BY THE CHUCK AGAINST AXIAL MOVEMENT RELATIVE TO THE CHUCK BODY; A SLEEVE CO-AXIALLY RECEIVED BY SAID CHUCK BODY BORE, SAID SLEEVE HAVING A THREADED PORTION ENGAGING THE THREADED PORTION OF SAID BORE WHILST THE INTERNAL BORE OF THE SLEEVE HAS A TAPER PORTION; AND A COLLET COAXIALLY RECEIVED BY SAID SLEEVE AND HAVING A POSITIVE DOGGED DRIVING ENGAGEMENT WITH THE SLEEVE SUCH THAT SOME RELATIVE AXIAL MOVEMENT OF THE COLLET AND SLEEVE IS PERMITTED, SAID COLLET HAVING A COMPLEMENTARY EXTERNAL TAPER PORTION CO-OPERATING WITH THE TAPER BORE PORTION OF THE SLEEVE WHILST SAID COLLET HAS AN INTERNAL THREADED PORTION WHICH IS ENGAGED BY A TOOL SHANK ON THE LATTER BEING RECEIVED BY THE COLLET TO END ABUTMENT IN THE CHUCK BODY WHEREBY ON THE TOOL TENDING TO TURN RELATIVE TO THE COLLET UNDER CUTTING OR SIMILAR LOAD, TIGHTENING OF THE COLLET ABOUT THE TOOL SHANK AND IN THE SLEEVE IS OBTAINED AS WELL AS TIGHTENING OF THE SLEEVE IN THE CHUCK BODY BORE.
Claim 2
Dependent Claim
214 words
A CHUCK COMPRISING A CHUCK BODY HAVING A MOUNTING SHANK AND HAVING AN AXIAL BORE OPEN AT THE LEADING END OF THE CHUCK BODY, SAID BORE HAVING AN INTERNAL THREADED PORTION; ABUTMENT MEANS PROVIDED AT THE INNER END OF SAID BORE FOR LOCATING THE END OF A TOOL SHANK RECEIVED BY THE CHUCK AGAINST AXIAL MOVEMENT RELATIVE TO THE CHUCK BODY; A SLEEVE CO-AXIALLY RECEIVED BY SAID CHUCK BODY BORE, SAID SLEEVE HAVING A THREADED PORTION ENGAGING THE THREADED PORTION OF SAID BORE WHILST THE INTERNAL BORE OF THE SLEEVE HAS A TAPER PORTION; AND A COLLET COAXIALLY RECEIVED BY SAID SLEEVE AND HAVING A POSITIVE DOGGED DRIVING ENGAGEMENT WITH THE SLEEVE SUCH THAT SOME RELATIVE AXIAL MOVEMENT OF THE COLLET AND SLEEVE IS PERMITTED, SAID COLLET HAVING A COMPLEMENTARY EXTERNAL TAPER PORTION CO-OPERATING WITH THE TAPER BORE PORTION OF THE SLEEVE WHILST SAID COLLET HAS AN INTERNAL THREADED PORTION WHICH IS ENGAGED BY A TOOL SHANK ON THE LATTER BEING RECEIVED BY THE COLLET TO END ABUTMENT IN THE CHUCK BODY WHEREBY ON THE TOOL TENDING TO TURN RELATIVE TO THE COLLET UNDER CUTTING OR SIMILAR LOAD, TIGHTENING OF THE COLLET ABOUT THE TOOL SHANK AND IN THE SLEEVE IS OBTAINED AS WELL AS TIGHTENING OF THE SLEEVE IN THE CHUCK BODY BORE.
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) | 1967-02-10 | 1967-08-12 | 1968-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-10 | 1971-08-12 | 1972-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-10 | 1975-08-12 | 1976-02-11 | $7700.00 | Window Closed / Lapsed |