US3275314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid cushion
Assignee: Continental Teves AG and Co OHG
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Filing: 1964-09-01
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Granted: 1966-09-27
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Expires: 1984-09-01
Abstract
No abstract record available.
Inventors
- 👤 Ostwald Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:58
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/02; B60G17/04; B60G17/048; B60G11/00; B60G11/26; B60G11/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A FLUID CUSHION COMPRISING A CYLINDER PROVIDED WITH AN INLET AND AN OUTLET FOR A WORKING FLUID, VALVE MEANS IN SAID OUTLET, BIASING MEANS URGING SAID VALVE MEANS INTO A POSITION OF CLOSURE, A CONDUIT SYSTEM INCLUDING FORCEDCIRCULATION MEANS CONNECTED TO SAID INLET AND OUTLET FOR DRIVING SAID FLUID THROUGH SAID CYLINDER, SAID VALVE MEANS INCLUDING A BODY WITH A FACE EXPOSED TO SAID FLUID FOR PARTLY OVERCOMING THE FORCE OF SAID BIASING MEANS UNDER PRESSURE OF SAID FORCED-CIRCULATION MEANS WHEREBY SAID OUTLET IS HELD OPEN FOR THE PASSAGE OF SAID FLUID AT A CONTROLLED RATE, AND PISTON MEANS IN SAID CYLINDER MOVABLE RELATIVELY THERETO UNDER THE ACTION OF A LOAD FOR EXERTING A SUPPLEMENTAL VALVE-OPENING PRESSURE IN THE FLUID IN SAID CYLINDER UPON AN INCREASE IN SAID LOAD, SAID PISTON MEANS BEING LINKED WITH SAID VALVE MEANS BY A RESILIENT COUPLING INCLUDING AT LEAST PART OF SAID BIASING MEANS, SAID RESILIENT COUPLING COUNTERACTING THE VALVE-OPENING PRESSURE EXERTED UPON SAID FACE BY THE FLUID IN SAID CYLINDER.
Claim 2
Dependent Claim
167 words
A FLUID CUSHION COMPRISING A CYLINDER PROVIDED WITH AN INLET AND AN OUTLET FOR A WORKING FLUID, VALVE MEANS IN SAID OUTLET, BIASING MEANS URGING SAID VALVE MEANS INTO A POSITION OF CLOSURE, A CONDUIT SYSTEM INCLUDING FORCEDCIRCULATION MEANS CONNECTED TO SAID INLET AND OUTLET FOR DRIVING SAID FLUID THROUGH SAID CYLINDER, SAID VALVE MEANS INCLUDING A BODY WITH A FACE EXPOSED TO SAID FLUID FOR PARTLY OVERCOMING THE FORCE OF SAID BIASING MEANS UNDER PRESSURE OF SAID FORCED-CIRCULATION MEANS WHEREBY SAID OUTLET IS HELD OPEN FOR THE PASSAGE OF SAID FLUID AT A CONTROLLED RATE, AND PISTON MEANS IN SAID CYLINDER MOVABLE RELATIVELY THERETO UNDER THE ACTION OF A LOAD FOR EXERTING A SUPPLEMENTAL VALVE-OPENING PRESSURE IN THE FLUID IN SAID CYLINDER UPON AN INCREASE IN SAID LOAD, SAID PISTON MEANS BEING LINKED WITH SAID VALVE MEANS BY A RESILIENT COUPLING INCLUDING AT LEAST PART OF SAID BIASING MEANS, SAID RESILIENT COUPLING COUNTERACTING THE VALVE-OPENING PRESSURE EXERTED UPON SAID FACE BY THE FLUID IN SAID CYLINDER.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |