Patent US3085813A successfully refreshed from Google Patents.
US3085813A
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Assignee: SP Manufacturing CORP
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Filing: 1960-04-27
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Granted: 1963-04-16
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Expires: 1980-04-27
Abstract
No abstract record available.
Inventors
- 👤 Merritt B Sampson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:40
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/16; B23B31/16195; B23B31/16216; B23B31/1622; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17042; Y10T279/19; Y10T279/1961; Y10T279/34; Y10T279/3425
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
IN A MACHINE TOOL HAVING A ROTATABLE SPINDLE AND A ROTATABLE AND AXIALLY RECIPROCAL DRAW MEMBER EXTENDING WITHIN SAID SPINDLE, THE COMBINATION OF A CHUCK HAVING A BODY SECURED TO SAID SPINDLE, WORKPIECE HOLDER JAW MEANS CARRIED BY SAID BODY, SAID JAW MEANS BEING MOVABLE TO ENGAGE AND EXERT CLAMPING PRESSURE ON A WORKPIECE, AN AXIALLY RECIPROCAL CHUCK DRAW BAR HAVING AN END PORTION EXTENDING AXIALLY OF SAID BODY INTO OVERLAPPING RELATIONSHIP WITH AN END PORTION OF SAID DRAW MEMBER, MEANS CONNECTING SAID CHUCK DRAW BAR TO SAID JAW MEANS FOR CAUSING WORKPIECE ENGAGING MOVEMENT OF SAID JAW MEANS WHEN SAID CHUCK DRAW BAR IS AXIALLY MOVED, AND YIELDABLE COMPRESSION LINKAGE MEANS DISPOSED BETWEEN AND OPERATIVELY CONNECTING THE OVERLAPPED PORTIONS OF SAID DRAW MEMBER AND SAID DRAW BAR FOR EFFECTING CLAMPING PRESSURE OF SAID JAW MEANS SUBSEQUENT TO SAID WORKPIECE ENGAGING MOVEMENT.
Claim 2
Dependent Claim
142 words
IN A MACHINE TOOL HAVING A ROTATABLE SPINDLE AND A ROTATABLE AND AXIALLY RECIPROCAL DRAW MEMBER EXTENDING WITHIN SAID SPINDLE, THE COMBINATION OF A CHUCK HAVING A BODY SECURED TO SAID SPINDLE, WORKPIECE HOLDER JAW MEANS CARRIED BY SAID BODY, SAID JAW MEANS BEING MOVABLE TO ENGAGE AND EXERT CLAMPING PRESSURE ON A WORKPIECE, AN AXIALLY RECIPROCAL CHUCK DRAW BAR HAVING AN END PORTION EXTENDING AXIALLY OF SAID BODY INTO OVERLAPPING RELATIONSHIP WITH AN END PORTION OF SAID DRAW MEMBER, MEANS CONNECTING SAID CHUCK DRAW BAR TO SAID JAW MEANS FOR CAUSING WORKPIECE ENGAGING MOVEMENT OF SAID JAW MEANS WHEN SAID CHUCK DRAW BAR IS AXIALLY MOVED, AND YIELDABLE COMPRESSION LINKAGE MEANS DISPOSED BETWEEN AND OPERATIVELY CONNECTING THE OVERLAPPED PORTIONS OF SAID DRAW MEMBER AND SAID DRAW BAR FOR EFFECTING CLAMPING PRESSURE OF SAID JAW MEANS SUBSEQUENT TO SAID WORKPIECE ENGAGING MOVEMENT.
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) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |