Patent US3146790A successfully refreshed from Google Patents.
US3146790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sequence valve
Assignee: RACINE HYDRAULICS AND MACHINERY Inc
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Filing: 1963-07-05
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Granted: 1964-09-01
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Expires: 1983-07-05
Abstract
No abstract record available.
Inventors
- 👤 Charles O Breitsprecher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:27
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/06; F15B13/07; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7764; Y10T137/7766; Y10T137/7781; Y10T137/7784; Y10T137/7792
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
A SEQUENCE VALVE COMPRISING: A CENTRAL VALVE BODY HAVING A CENTRAL CHAMBER WITH SPACED INLET AND OUTLET PORTS CONNECTED BY PASSAGE TO SAID CHAMBER, SAID CHAMBER ALSO BEING OPEN AT BOTH ENDS THEREOF, MEANS MOVABLY DISPOSED IN SAID CHAMBER AND RESPONSIVE TO A PRESSURE DIFFERENTIAL BETWEEN THE CHAMBER ENDS TO CONTROL FLOW BETWEEN THE INLET AND OUTLET PORTS AND IN ONE POSITION THEREOF BLOCKING FLUID FLOW BETWEEN SAID INLET AND OUTLET PORTS, MEANS FOR DIRECTING FLUID FROM THE INLET PORT TO ONE OF SAID CHAMBER ENDS AND INCLUDING A SECOND CHAMBER, A SECOND INLET CONNECTED TO SAID MAIN BODY INLET PORT, A SECOND OUTLET CONNECTED TO SAID MAIN BODY INLET PORT, A SECOND OUTLET CONNECTED TO SAID ONE CHAMBER END, A VALVE MEMBER SLIDABLY MOUNTED IN SAID SECOND CHAMBER AND HAVING A PASSAGE PERMITTING FLUID FLOW THERETHROUGH, SAID VALVE MEMBER BEING MOVABLE TO A POSITION PARTIALLY OVERLYING SAID SECOND OUTLET TO THROTTLE FLUID THROUGH SAID SECOND OUTLET, SPRING MEANS URGING SAID SECOND VALVE MEMBER AWAY FROM THROTTLING RELATION WITH SAID SECOND OUTLET, AND A PILOT RELIEF VALVE CONNECTED TO THE OTHER END OF SAID CENTRAL CHAMBER.
Claim 2
Dependent Claim
186 words
A SEQUENCE VALVE COMPRISING: A CENTRAL VALVE BODY HAVING A CENTRAL CHAMBER WITH SPACED INLET AND OUTLET PORTS CONNECTED BY PASSAGE TO SAID CHAMBER, SAID CHAMBER ALSO BEING OPEN AT BOTH ENDS THEREOF, MEANS MOVABLY DISPOSED IN SAID CHAMBER AND RESPONSIVE TO A PRESSURE DIFFERENTIAL BETWEEN THE CHAMBER ENDS TO CONTROL FLOW BETWEEN THE INLET AND OUTLET PORTS AND IN ONE POSITION THEREOF BLOCKING FLUID FLOW BETWEEN SAID INLET AND OUTLET PORTS, MEANS FOR DIRECTING FLUID FROM THE INLET PORT TO ONE OF SAID CHAMBER ENDS AND INCLUDING A SECOND CHAMBER, A SECOND INLET CONNECTED TO SAID MAIN BODY INLET PORT, A SECOND OUTLET CONNECTED TO SAID MAIN BODY INLET PORT, A SECOND OUTLET CONNECTED TO SAID ONE CHAMBER END, A VALVE MEMBER SLIDABLY MOUNTED IN SAID SECOND CHAMBER AND HAVING A PASSAGE PERMITTING FLUID FLOW THERETHROUGH, SAID VALVE MEMBER BEING MOVABLE TO A POSITION PARTIALLY OVERLYING SAID SECOND OUTLET TO THROTTLE FLUID THROUGH SAID SECOND OUTLET, SPRING MEANS URGING SAID SECOND VALVE MEMBER AWAY FROM THROTTLING RELATION WITH SAID SECOND OUTLET, AND A PILOT RELIEF VALVE CONNECTED TO THE OTHER END OF SAID CENTRAL CHAMBER.
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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |