Patent US3175490A successfully refreshed from Google Patents.
US3175490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrostat
Assignee: Individual
•
Filing: 1957-06-25
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Granted: 1965-03-30
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Expires: 1977-06-25
Abstract
No abstract record available.
Inventors
- 👤 Lester R Wall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:27
CPC Classifications
F; F42; F42B; F42B22/00; F42B22/10; F42B22/14; F42B22/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A HYDROSTAT COMPRISING A HOUSING, A FLANGE IMMOVEABLY FIXED TO SAID HOUSING, AT LEAST ONE MOVEABLE JAW TOGETHER WITH SAID FLANGE FORMING AT LEAST ONE SEPARABLE LINK, JAW ACTUATING MEANS CONNECTED TO SAID JAW FOR ACTUATION THEREOF, A PISTON OPERABLE WITHIN SAID HOUSING BETWEEN A COCKED MEANS-ENGAGING POSITION AND A MEANSRELEASE POSITION, WHEREBY SAID MEANS ACTUATES SAID JAW TO SEPARATE THE LINK WHEN SAID PISTON IS IN THE MEANS RELEASE POSITION, PRESSURE RESPONSIVE MEANS COUPLED TO SAID PISTON AND EXERTING A FORCE THEREUPON TO RESTRAIN SAID PISTON IN THE COCKED POSITION, A CANTILEVER BEAM COUPLED TO SAID PISTON TO URGE SAID PISTON INTO THE MEANS RELEASE POSITION, WHEREBY SAID PISTON MOVES TO THE MEANS RELEASE POSITION WHEN THE FORCE EXERTED BY SAID CANTILEVER BEAM EXCEEDS THE FORCE EXERTED BY SAID PRESSURE RESPONSIVE MEANS.
Claim 2
Dependent Claim
133 words
A HYDROSTAT COMPRISING A HOUSING, A FLANGE IMMOVEABLY FIXED TO SAID HOUSING, AT LEAST ONE MOVEABLE JAW TOGETHER WITH SAID FLANGE FORMING AT LEAST ONE SEPARABLE LINK, JAW ACTUATING MEANS CONNECTED TO SAID JAW FOR ACTUATION THEREOF, A PISTON OPERABLE WITHIN SAID HOUSING BETWEEN A COCKED MEANS-ENGAGING POSITION AND A MEANSRELEASE POSITION, WHEREBY SAID MEANS ACTUATES SAID JAW TO SEPARATE THE LINK WHEN SAID PISTON IS IN THE MEANS RELEASE POSITION, PRESSURE RESPONSIVE MEANS COUPLED TO SAID PISTON AND EXERTING A FORCE THEREUPON TO RESTRAIN SAID PISTON IN THE COCKED POSITION, A CANTILEVER BEAM COUPLED TO SAID PISTON TO URGE SAID PISTON INTO THE MEANS RELEASE POSITION, WHEREBY SAID PISTON MOVES TO THE MEANS RELEASE POSITION WHEN THE FORCE EXERTED BY SAID CANTILEVER BEAM EXCEEDS THE FORCE EXERTED BY SAID PRESSURE RESPONSIVE MEANS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |