Patent US3199928A successfully refreshed from Google Patents.
US3199928A
Expired / Lapsed
US
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Load responsive valve
Assignee: Whitnash PLC
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Filing: 1962-03-09
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Granted: 1965-08-10
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Expires: 1982-03-09
Abstract
No abstract record available.
Inventors
- 👤 Leslie C Chouings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:10
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/18; B60T8/1837; B60T8/185; B60T8/26; Y; Y10; Y10S; Y10S280/00; Y10S280/01; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7822; Y10T137/7823; Y10T137/7826
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A VALVE FOR A FLUID PRESSURE BRAKING SYSTEM OF A VEHICLE WITH A SPRING LOADED MOVABLE VALVE MEMBER MOVABLE FROM A NORMALLY OPEN POSITION TO WHICH IT IS URGED BY THE SPRING ACTION, TO A CLOSED POSITION BY PRESSURE CREATED IN THE SYSTEM IN WHICH THE VALVE IS CONNECTED, SAID VALVE MEMBER BEING SECURED TO THE VEHICLE PLATFORM, A ROD MEMBER OPERATIVELY CONNECTED TO SAID SPRING LOADED VALVE MEMBER TO VARY THE LOADING OF THE SPRING, AN ARM MEMBER PIVOTALLY CONNECTED AT ONE END TO THE VEHICLE PLATFORM AND WITH ITS OTHER END FREELY DISPOSED AGAINST THE BRACKET PLATE MEMBER OF THE VEHICLE AXLE, A CASING SECURED TO SAID ARM MEMBER IN ALIGNMENT WITH SAID ROD MEMBER, BIASING MEANS IN SAID CASING ACTING AGAINST SAID ROD MEMBER, SAIR ARM MEMBER BEING OPERABLY TO PIVOT BY RELATIVE MOVEMENT BETWEEN THE VEHICLE PLATFORM AND BRACKET MEMBER CAUSED BY VARIATIONS IN THE VEHICLE LOADING TO CAUSE SAID BIASING MEANS TO MOVE SAID ROD MEMBER TO VARY THE LOADING IN SAID SPRING MEMBER.
Claim 2
Dependent Claim
169 words
A VALVE FOR A FLUID PRESSURE BRAKING SYSTEM OF A VEHICLE WITH A SPRING LOADED MOVABLE VALVE MEMBER MOVABLE FROM A NORMALLY OPEN POSITION TO WHICH IT IS URGED BY THE SPRING ACTION, TO A CLOSED POSITION BY PRESSURE CREATED IN THE SYSTEM IN WHICH THE VALVE IS CONNECTED, SAID VALVE MEMBER BEING SECURED TO THE VEHICLE PLATFORM, A ROD MEMBER OPERATIVELY CONNECTED TO SAID SPRING LOADED VALVE MEMBER TO VARY THE LOADING OF THE SPRING, AN ARM MEMBER PIVOTALLY CONNECTED AT ONE END TO THE VEHICLE PLATFORM AND WITH ITS OTHER END FREELY DISPOSED AGAINST THE BRACKET PLATE MEMBER OF THE VEHICLE AXLE, A CASING SECURED TO SAID ARM MEMBER IN ALIGNMENT WITH SAID ROD MEMBER, BIASING MEANS IN SAID CASING ACTING AGAINST SAID ROD MEMBER, SAIR ARM MEMBER BEING OPERABLY TO PIVOT BY RELATIVE MOVEMENT BETWEEN THE VEHICLE PLATFORM AND BRACKET MEMBER CAUSED BY VARIATIONS IN THE VEHICLE LOADING TO CAUSE SAID BIASING MEANS TO MOVE SAID ROD MEMBER TO VARY THE LOADING IN SAID SPRING MEMBER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |