US3152810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collet chuck
Assignee: DAVENPORT MACHINE TOOL Co
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Filing: 1962-07-03
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Granted: 1964-10-13
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Expires: 1982-07-03
Abstract
No abstract record available.
Inventors
- 👤 Earl W Brinkman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:18
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/20; B23B31/201; B23B31/202; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17411; Y10T279/17418; Y10T279/17427
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
A SPRING COLLET FOR USE IN A DRAW TYPE COLLET CHUCK, COMPRISING (A) A SLEEVE HAVING A PLURALITY OF AXIALLY-EXTENDING SLOTS THROUGH ITS WALL EXTENDING FROM ITS FRONT END REARWARDLY FOR LESS THAN THE LENGTH OF THE SLEEVE, (B) SAID SLOTS BEING ANGULARLY SPACED FROM ONE ANOTHER ABOUT THE AXIS OF SAID SLEEVE, AND DIVIDING SAID SLEEVE INTO A PLURALITY OF AXIALLY EXTENDING FINGERS COMPRESSIBLE IN CANTILEVER FASHION RADIALLY INWARDLY, (C) EACH OF SAID FINGERS HAVING IN ITS OUTER SURFACE AT LEAST ONE AXIALLY EXTENDING GROOVE WHICH EXTENDS FROM THE FRONT, FREE, TERMINAL END OF A RESPECTIVE FINGER AXIALLY REARWARDLY TOWARD THE REAR END OF THE SLEEVE, (D) THE AXIAL LENGTH OF SAID SLOTS BEING EQUAL, (E) EACH OF SAID GROOVES HAVING AN AXIAL LENGTH LESS THAN THE AXIAL LENGTH OF SAID SLOTS, (F) SAID GROOVES AT THE REAR ENDS THEREOF COMMUNICATING WITH FURTHER, AXIALLY EXTENDING SLOTS FORMED THROUGH THE WALL OF SAID SLEEVE AND IN ALIGNMENT WITH SAID GROOVES, AND (G) THE OVERALL AXIAL LENGTH OF A RESPECTIVE GROOVE AND OF THE SLOT ALIGNED THEREWITH BEING LESS THAN THE AXIAL LENGTH OF THE ASSOCIATED FINGER.
Claim 2
Dependent Claim
186 words
A SPRING COLLET FOR USE IN A DRAW TYPE COLLET CHUCK, COMPRISING (A) A SLEEVE HAVING A PLURALITY OF AXIALLY-EXTENDING SLOTS THROUGH ITS WALL EXTENDING FROM ITS FRONT END REARWARDLY FOR LESS THAN THE LENGTH OF THE SLEEVE, (B) SAID SLOTS BEING ANGULARLY SPACED FROM ONE ANOTHER ABOUT THE AXIS OF SAID SLEEVE, AND DIVIDING SAID SLEEVE INTO A PLURALITY OF AXIALLY EXTENDING FINGERS COMPRESSIBLE IN CANTILEVER FASHION RADIALLY INWARDLY, (C) EACH OF SAID FINGERS HAVING IN ITS OUTER SURFACE AT LEAST ONE AXIALLY EXTENDING GROOVE WHICH EXTENDS FROM THE FRONT, FREE, TERMINAL END OF A RESPECTIVE FINGER AXIALLY REARWARDLY TOWARD THE REAR END OF THE SLEEVE, (D) THE AXIAL LENGTH OF SAID SLOTS BEING EQUAL, (E) EACH OF SAID GROOVES HAVING AN AXIAL LENGTH LESS THAN THE AXIAL LENGTH OF SAID SLOTS, (F) SAID GROOVES AT THE REAR ENDS THEREOF COMMUNICATING WITH FURTHER, AXIALLY EXTENDING SLOTS FORMED THROUGH THE WALL OF SAID SLEEVE AND IN ALIGNMENT WITH SAID GROOVES, AND (G) THE OVERALL AXIAL LENGTH OF A RESPECTIVE GROOVE AND OF THE SLOT ALIGNED THEREWITH BEING LESS THAN THE AXIAL LENGTH OF THE ASSOCIATED FINGER.
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) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |