Drill chuck
Abstract
Abstract A DRILL CHICH IS PROVIDED HAVING A CHUCK SLEEVE FOR CONTROLLING THE POSITION OF A PLURALITY OF GRIPPING JAWS RELATIVE TO A ROTATABLE SHAFT FOR HOLDING A WORKPIECE AND A CAMMING MCHANISM FOR APPLYING GRIPPING FORCE TO THE JAWS. THE CAMMING MECHANISM COMPRISES A HOLLOW CAMMING SLIDE MOUNTED ON AN INTERMEDIATE PORTION OF THE SHAFT, CAM MEANS CONNECTED TO THE SHAFT FORWARDLY OF AN ENGAGEABLY WITH THE SLIDE, RESILIENT MEANS FOR CONTINUOUSLY URGING THE SLIDE TOWARD THE FORWARD END OF THE SHAFT TO ENGAGE AND ACTUATE THE CAM MEANS, AND TRANSMITTING MEANS CONNECTING THE JAWS WITH THE CAM MEANS TO FORCE THE JAWS INWARDLY AND GRIP THE WORKPIECE AT THE FORWARD END OF THE SHAFT UPON ACTUATION OF THE CAM MEANS.
Inventors
- 👤 J Stewart
Bibliographic Details
Claims Analysis
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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) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |