Patent US3077186A successfully refreshed from Google Patents.
US3077186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-stroke fluid power actuator
Assignee: Motors Liquidation Co
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Filing: 1961-04-19
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Granted: 1963-02-12
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Expires: 1981-04-19
Abstract
No abstract record available.
Inventors
- 👤 Beaubien William J De
- 👤 James H Flatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:12
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/08; F15B11/12; F15B11/121; F15B11/125; F01; F01B; F01B17/00; F01B17/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A MULTI-STROKE ACTUATOR COMPRISING, A FIRST CHAMBER DEFINED BY A FIRST DIAPHRAGM AND A FIRST CASING, A SECOND CHAMBER DEFINED BY A SECOND DIAPHRAGM AND A SECOND CASING, SAID FIRST AND SECOND DIAPHRAGMS MOVING IN THE SAME DIRECTION WHEN EITHER SAID FIRST OR SECOND CHAMBER IS CONNECTED WITH VACUUM, SAID FIRST CASING HAVING A WALL LIMITING THE MOVEMENT OF SAID FIRST DIAPHRAGM IN ONE DIRECTION, SAID SECOND CASING HAVING A WALL LIMITING THE MOVEMENT OF SAID SECOND DIAPHRAGM IN THE SAME DIRECTION, MEANS RIGIDLY CONNECTING SAID CASINGS, AN ACTUATING MEANS CONNECTED WITH SAID FIRST DIAPHRAGM, AND A LOST MOTION CONNECTION CONNECDTING SAID FIRST DIAPHRAGM AND SAID SECOND DIAPHRAGM, SAID LOST MOTION CONNECTION PERMITTING A MOVEMENT OF SAID FIRST DIAPHRAGM RELATIVE TO SAID SECOND DIAPHRAGM WHEN SAID SECOND DIAPHRAGM HAS MOVED TO ITS LIMIT OF MOVEMENT.
Claim 2
Dependent Claim
135 words
A MULTI-STROKE ACTUATOR COMPRISING, A FIRST CHAMBER DEFINED BY A FIRST DIAPHRAGM AND A FIRST CASING, A SECOND CHAMBER DEFINED BY A SECOND DIAPHRAGM AND A SECOND CASING, SAID FIRST AND SECOND DIAPHRAGMS MOVING IN THE SAME DIRECTION WHEN EITHER SAID FIRST OR SECOND CHAMBER IS CONNECTED WITH VACUUM, SAID FIRST CASING HAVING A WALL LIMITING THE MOVEMENT OF SAID FIRST DIAPHRAGM IN ONE DIRECTION, SAID SECOND CASING HAVING A WALL LIMITING THE MOVEMENT OF SAID SECOND DIAPHRAGM IN THE SAME DIRECTION, MEANS RIGIDLY CONNECTING SAID CASINGS, AN ACTUATING MEANS CONNECTED WITH SAID FIRST DIAPHRAGM, AND A LOST MOTION CONNECTION CONNECDTING SAID FIRST DIAPHRAGM AND SAID SECOND DIAPHRAGM, SAID LOST MOTION CONNECTION PERMITTING A MOVEMENT OF SAID FIRST DIAPHRAGM RELATIVE TO SAID SECOND DIAPHRAGM WHEN SAID SECOND DIAPHRAGM HAS MOVED TO ITS LIMIT OF MOVEMENT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |