Patent US3211445A successfully refreshed from Google Patents.
US3211445A
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Hydrostatic clamping block
Assignee: Individual
•
Filing: 1962-06-08
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Granted: 1965-10-12
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Expires: 1982-06-08
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Rossman
- 👤 Aves Kenilworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:21
CPC Classifications
B; B25; B25B; B25B1/00; B25B1/24; B25B1/2405; B25B1/241; B25B1/2415; B25B1/2421; B23; B23Q; B23Q3/00; B23Q3/02; B23Q3/06; B23Q3/066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A MACHINE TOOL WORKPIECE CLAMP COMPRISING A CYLINDRICAL BLOCK, A PLURALITY OF PINS SET THEREIN MOVABLE FROM RETRACTED TO PROTRACTED POSITIONS UNDER HYDROSTATIC PRESSURE OF A CONFINED LIQUID, FIXED JAW MEMBERS CARRIED BY THE BLOCK IN CIRCUMFERENTIALLY SPACED RELATION TO SAID PINS, MEANS REMOVABLY SECURING SAID JAW MEMBERS TO THE BLOCK,
Claim 2
Dependent Claim
51 words
A MACHINE TOOL WORKPIECE CLAMP COMPRISING A CYLINDRICAL BLOCK, A PLURALITY OF PINS SET THEREIN MOVABLE FROM RETRACTED TO PROTRACTED POSITIONS UNDER HYDROSTATIC PRESSURE OF A CONFINED LIQUID, FIXED JAW MEMBERS CARRIED BY THE BLOCK IN CIRCUMFERENTIALLY SPACED RELATION TO SAID PINS, MEANS REMOVABLY SECURING SAID JAW MEMBERS TO THE BLOCK,
References Cited (Backward Citations)
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |