US3151871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chuck
Assignee: Skinner Precision Industries Inc
•
Filing: 1961-10-19
•
Granted: 1964-10-06
•
Expires: 1981-10-19
Abstract
No abstract record available.
Inventors
- 👤 Howard C Multer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:37
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/16; B23B31/1627; B23B31/16275; Y; Y10; Y10T; Y10T279/00; Y10T279/12; Y10T279/1274; Y10T279/1283; Y10T279/19; Y10T279/1986; Y10T279/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A CHUCK COMPRISING A CHUCK BODY, A PLURALITY OF RADIALLY DISPLACEABLE JAWS ANGULARLY POSITIONED ABOUT A CENTRAL CHUCK BODY AXIS AND ENGAGEABLE WITH A WORKPIECE, AT LEAST ONE OF THE JAWS BEING A SELF-COMPENSATING JAW HAVING A PLURALITY OF CYLINDRICAL CHAMBERS EXTENDING GENERALLY RADIALLY FROM THE CENTRAL CHUCK BODY AXIS AND OPENING TOWARD THE WORKPIECE, CLAMPING PISTONS ENGAGEABLE WITH THE WORKPIECE AND SLIDABLY MOUNTED IN THE CYLINDRICAL CHAMBERS FOR MOVEMENT TOWARD AND AWAY FROM THE WROKPIECE, THE CYLINDRICAL CHAMBERS BEING POSITIONED TO PROVIDE TWO AXIALLY SPACED ROWS THEREON, JAW PASSAGES INTERCONNECTING THE CHAMBERS, AND A SUBSTANTIALLY INCOMPRESSIBLE MEDIUM IN THE JAW PASSAGES FOR TRANSMITTING FORCES BETWEEN THE CLAMPING PISTONS TO AUTOMATICALLY ADJUST THE PISTONS TO THE CONTOUR OF THE WORKPIECE.
Claim 2
Dependent Claim
120 words
A CHUCK COMPRISING A CHUCK BODY, A PLURALITY OF RADIALLY DISPLACEABLE JAWS ANGULARLY POSITIONED ABOUT A CENTRAL CHUCK BODY AXIS AND ENGAGEABLE WITH A WORKPIECE, AT LEAST ONE OF THE JAWS BEING A SELF-COMPENSATING JAW HAVING A PLURALITY OF CYLINDRICAL CHAMBERS EXTENDING GENERALLY RADIALLY FROM THE CENTRAL CHUCK BODY AXIS AND OPENING TOWARD THE WORKPIECE, CLAMPING PISTONS ENGAGEABLE WITH THE WORKPIECE AND SLIDABLY MOUNTED IN THE CYLINDRICAL CHAMBERS FOR MOVEMENT TOWARD AND AWAY FROM THE WROKPIECE, THE CYLINDRICAL CHAMBERS BEING POSITIONED TO PROVIDE TWO AXIALLY SPACED ROWS THEREON, JAW PASSAGES INTERCONNECTING THE CHAMBERS, AND A SUBSTANTIALLY INCOMPRESSIBLE MEDIUM IN THE JAW PASSAGES FOR TRANSMITTING FORCES BETWEEN THE CLAMPING PISTONS TO AUTOMATICALLY ADJUST THE PISTONS TO THE CONTOUR OF THE WORKPIECE.
References Cited (Backward Citations)
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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) | 1967-10-06 | 1968-04-06 | 1968-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-06 | 1972-04-06 | 1972-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-06 | 1976-04-06 | 1976-10-06 | $7700.00 | Window Closed / Lapsed |