Patent US2586843A successfully refreshed from Google Patents.
Patent US3243025A successfully refreshed from Google Patents.
US3243025A
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US
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Control valve for hydraulically actuated clutches
Assignee: BORG-WARNER ACCEPTANCE Corp A CORP OF
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Filing: 1964-03-12
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Granted: 1966-03-29
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Expires: 1984-03-12
Abstract
No abstract record available.
Inventors
- 👤 Donald C Staab
- 👤 Robert B Singer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:50
CPC Classifications
F; F16; F16D; F16D48/00; F16D48/02; F16D48/0206; F16D2048/0209; F16D2048/0221; F16D2048/0224; F16D2500/00; F16D2500/10; F16D2500/11; F16D2500/1107; F16D2500/1112; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86694; Y10T137/8671
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
IN A CONTROL VALVE FOR SELECTIVELY ACTUATING THE FORWARD AND REVERSE FLUID ACTUATED CLUTCHES OF A TRUCK TRANSMISSION, A VALVE HOUSING HAVING AN ELONGATED INTERNAL CHAMBER ADAPTED TO RECEIVE FLUID UNDER PRESSURE FROM A SUITABLE SOURCE, SAID HOUSING HAVING FORWARD AND REVERSE OUTLET PASSAGEWAYS OPENING INTO THE CHAMBER AND ADAPTED TO BE RESPECTIVELY CONNECTED TO FORWARD AND REVERSE CLUTCHES OF A TRANSMISSION, A VALUE MEANS DISPOSED IN SAID CHAMBER FOR LONGITUDINAL SLIDING MOVEMENT IN THE CHAMBER BETWEEN FORWARD AND REVERSE POSITIONS RESPECTIVELY OPENING AND SOURCE TO SAID OUTLET PASSAGEWAY AND A CENTRAL NEUTRAL POSITION, A CONTROL CONNECTED TO THE VALVE MEANS FOR OPERATING THESAME, AND SAID VALVE MEANS HAVING CONTROL PASSAGEWAYS POSITIONED TO OPEN BOTH OF SAID OUTLET PASSAGEWAYS TO THE SOURCE WHEN THE BALVE MEANS IS IN NEUTRAL POSITON TO PRECHARGE THE OUTLEY PASSAGEWAYS WITH THE FLUID.
Claim 2
Dependent Claim
138 words
IN A CONTROL VALVE FOR SELECTIVELY ACTUATING THE FORWARD AND REVERSE FLUID ACTUATED CLUTCHES OF A TRUCK TRANSMISSION, A VALVE HOUSING HAVING AN ELONGATED INTERNAL CHAMBER ADAPTED TO RECEIVE FLUID UNDER PRESSURE FROM A SUITABLE SOURCE, SAID HOUSING HAVING FORWARD AND REVERSE OUTLET PASSAGEWAYS OPENING INTO THE CHAMBER AND ADAPTED TO BE RESPECTIVELY CONNECTED TO FORWARD AND REVERSE CLUTCHES OF A TRANSMISSION, A VALUE MEANS DISPOSED IN SAID CHAMBER FOR LONGITUDINAL SLIDING MOVEMENT IN THE CHAMBER BETWEEN FORWARD AND REVERSE POSITIONS RESPECTIVELY OPENING AND SOURCE TO SAID OUTLET PASSAGEWAY AND A CENTRAL NEUTRAL POSITION, A CONTROL CONNECTED TO THE VALVE MEANS FOR OPERATING THESAME, AND SAID VALVE MEANS HAVING CONTROL PASSAGEWAYS POSITIONED TO OPEN BOTH OF SAID OUTLET PASSAGEWAYS TO THE SOURCE WHEN THE BALVE MEANS IS IN NEUTRAL POSITON TO PRECHARGE THE OUTLEY PASSAGEWAYS WITH THE FLUID.
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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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |