Patent US3170376A successfully refreshed from Google Patents.
US3170376A
Expired / Lapsed
US
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Hydraulic positioning means
Assignee: Individual
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Filing: 1961-06-21
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Granted: 1965-02-23
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Expires: 1981-06-21
Abstract
No abstract record available.
Inventors
- 👤 Sylvester R Cudnohufsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:16
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/08; F15B11/12; F15B11/121; F15B11/126; B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/18; B23Q2735/00; B23Q2735/02; B23Q2735/08; B23Q2735/082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
200 words
IN COMBINATION, A RELATIVELY FIXED MEMBER AND A RELATIVELY MOVABLE MEMBER, A HYDRAULIC MOTOR FOR MOVING THE MOVABLE MEMBER, A VALVE MOUNTED ON ONE OF SAID MEMBERS A STOP MOUNTED ON THE OTHER MEMBER, A MOVABLY MOUNTED ACTUATING MEMBER LOCATED IN THE RELATIVE PATH OF TRAVEL OF SAID STOP, FLOW RESTRICTING MEANS IN SAID VALVE FOR VARIABLY RESTRICTING THE FLOW THERETHROUGH, SAID ACTUATING MEMBER BEING OPERABLY CONNECTED WITH SAID FLOW RESTRICTING MEANS SUCH THAT FLOW THROUGH THE VALVE IS RESPONSIVE TO THE POSITION OF SAID ACTUATING MEMBER, A SOURCE OF RELATIVELY LOW PRESSURE CONNECTED TO THE INLET OF SAID HYDRAULIC MOTOR, A SOURCE OF RELATIVELY HIGH HYDRAULIC PRESSURE, A HIGH PRESSURE LINE EXTENDING FROM SAID HIGH PRESSURE SOURCE TO SAID VALVE ON TEH UPSTREAM SIDE OF SAID FLOW RESTRICTING MEANS, THE OUTLET OF SAID MOTOR BEING CONNECTED WITH SAID HIGH PRESSURE LINE, AN EXHAUST LINE CONNECTED TO SAID VALVE DOWNSTREAM OF SAID FLOW RESTRICTING MEANS, SAID FLOW RESTRICTING MEANS BEING OPERATIVE TO RESTRICT THE FLOW FROM THE HIGH PRESSURE LINE TO THE EXHAUST LINE AND THEREBY INCREASE THE PRESSURE IN SAID HIGH PRESSURE LINE TO AN EXTENT SUFFICIENT TO STOP MOTOR WHEN SAID ACTUATING MEMBER IS ENGAGED BY SAID STOP.
Claim 2
Dependent Claim
200 words
IN COMBINATION, A RELATIVELY FIXED MEMBER AND A RELATIVELY MOVABLE MEMBER, A HYDRAULIC MOTOR FOR MOVING THE MOVABLE MEMBER, A VALVE MOUNTED ON ONE OF SAID MEMBERS A STOP MOUNTED ON THE OTHER MEMBER, A MOVABLY MOUNTED ACTUATING MEMBER LOCATED IN THE RELATIVE PATH OF TRAVEL OF SAID STOP, FLOW RESTRICTING MEANS IN SAID VALVE FOR VARIABLY RESTRICTING THE FLOW THERETHROUGH, SAID ACTUATING MEMBER BEING OPERABLY CONNECTED WITH SAID FLOW RESTRICTING MEANS SUCH THAT FLOW THROUGH THE VALVE IS RESPONSIVE TO THE POSITION OF SAID ACTUATING MEMBER, A SOURCE OF RELATIVELY LOW PRESSURE CONNECTED TO THE INLET OF SAID HYDRAULIC MOTOR, A SOURCE OF RELATIVELY HIGH HYDRAULIC PRESSURE, A HIGH PRESSURE LINE EXTENDING FROM SAID HIGH PRESSURE SOURCE TO SAID VALVE ON TEH UPSTREAM SIDE OF SAID FLOW RESTRICTING MEANS, THE OUTLET OF SAID MOTOR BEING CONNECTED WITH SAID HIGH PRESSURE LINE, AN EXHAUST LINE CONNECTED TO SAID VALVE DOWNSTREAM OF SAID FLOW RESTRICTING MEANS, SAID FLOW RESTRICTING MEANS BEING OPERATIVE TO RESTRICT THE FLOW FROM THE HIGH PRESSURE LINE TO THE EXHAUST LINE AND THEREBY INCREASE THE PRESSURE IN SAID HIGH PRESSURE LINE TO AN EXTENT SUFFICIENT TO STOP MOTOR WHEN SAID ACTUATING MEMBER IS ENGAGED BY SAID STOP.
References Cited (Backward Citations)
US1897350A
Cited
US2775235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |