Patent US4815409A successfully refreshed from Google Patents.
Patent US3277791A successfully refreshed from Google Patents.
US3277791A
Expired / Lapsed
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Motion responsive devices
Assignee: General Electric Co
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Filing: 1965-03-30
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Granted: 1966-10-11
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Expires: 1985-03-30
Abstract
No abstract record available.
Inventors
- 👤 Raymond L Williams
- 👤 William R Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:11
CPC Classifications
F; F15; F15B; F15B5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A MOTION RESTRAINING DEVICE COMPRISING, A CYLINDER MEANS, A PISTON MEANS RECIPROCABLE THEREIN, SAID CYLINDER MEANS AND PISTON MEANS DEFINING CHAMBER MEANS, AN INLET AND AN OUTLET ORIFICE COMMUNICATING WITH SAID CHAMBER MEANS, THE AREA OF SAID OUTLET ORIFICE BEING GREATER THAN THE AREA OF SAID INLET ORIFICE, MEANS FOR MAINTAINING AN UNINTERRUPTED FLOW OF LIQUID INTO AND OUT OF SAID CHAMBER MEANS WITH THE LIQUID PASSING THROUGH SAID ORIFICES, AND PRODUCING A LIQUID FORCE ON SAID PISTON MEANS WHICH VARIES WITH MOVEMENT OF SAID PISTON MEANS, AND MEANS FOR PROVIDING AN OPPOSING FORCE ON SAID PISTON MEANS WHICH IS EQUAL TO THAT PROVIDED BY SAID LIQUID WHEN THE PISTON MEANS IS AT REST AND VARIES INVERSELY WITH THE LIQUID FORCE DURING PISTON MOVEMENT.
Claim 2
Dependent Claim
124 words
A MOTION RESTRAINING DEVICE COMPRISING, A CYLINDER MEANS, A PISTON MEANS RECIPROCABLE THEREIN, SAID CYLINDER MEANS AND PISTON MEANS DEFINING CHAMBER MEANS, AN INLET AND AN OUTLET ORIFICE COMMUNICATING WITH SAID CHAMBER MEANS, THE AREA OF SAID OUTLET ORIFICE BEING GREATER THAN THE AREA OF SAID INLET ORIFICE, MEANS FOR MAINTAINING AN UNINTERRUPTED FLOW OF LIQUID INTO AND OUT OF SAID CHAMBER MEANS WITH THE LIQUID PASSING THROUGH SAID ORIFICES, AND PRODUCING A LIQUID FORCE ON SAID PISTON MEANS WHICH VARIES WITH MOVEMENT OF SAID PISTON MEANS, AND MEANS FOR PROVIDING AN OPPOSING FORCE ON SAID PISTON MEANS WHICH IS EQUAL TO THAT PROVIDED BY SAID LIQUID WHEN THE PISTON MEANS IS AT REST AND VARIES INVERSELY WITH THE LIQUID FORCE DURING PISTON MOVEMENT.
References Cited (Backward Citations)
US381571A
Cited
US2317383A
Cited
US2305971A
Cited
USRE24410E
Cited
US2873104A
Cited
US2945677A
Cited
US3023625A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |