US3245729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proportioning valve
Assignee: Motors Liquidation Co
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Filing: 1964-02-27
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Granted: 1966-04-12
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Expires: 1984-02-27
Abstract
No abstract record available.
Inventors
- 👤 Ronald L Shellhause
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:39
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/26; B60T8/28; B60T8/287; B60T8/282
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A FORCE PROPORTIONING DEVICE COMPRISING; A HOUSING HAVING AN INLET, A FLUID PRESSURE SOURCE IN FLUID COMMUNICATION WITH SAID INLET TO PROVIDE AN INPUT PRESSURE, A FLUID CHAMBER IN PRESSURE COMMUNICATION WITH SAID INLET FROM SAID PRESSURE SOURCE AND INCLUDING AN INLET AND AN OUTLET, FORCE OPERABLE MEANS IN PRESSURE COMMUNICATION WITH SAID FLUID CHAMBER, AND VALVE MEANS SLIDABLY DISPOSED FOR TRANSLATIONAL MOVEMENT IN SAID FLUID CHAMBER FOR LOWERING THE AVAILABLE PRESSURE TO SAID FORCE OPERABLE MEANS FROM SAID FLUID PRESSURE SOURCE A FIXED AMOUNT BELOW THE INPUT PRESSURE TO SAID FLUID CHAMBER, SAID VALVE MEANS HAVING DIFFERENTIAL AREAS ACTED ON BY AN INPUT PRESSURE AND BY ATMOSPHERIC PRESSURE.
Claim 2
Dependent Claim
109 words
A FORCE PROPORTIONING DEVICE COMPRISING; A HOUSING HAVING AN INLET, A FLUID PRESSURE SOURCE IN FLUID COMMUNICATION WITH SAID INLET TO PROVIDE AN INPUT PRESSURE, A FLUID CHAMBER IN PRESSURE COMMUNICATION WITH SAID INLET FROM SAID PRESSURE SOURCE AND INCLUDING AN INLET AND AN OUTLET, FORCE OPERABLE MEANS IN PRESSURE COMMUNICATION WITH SAID FLUID CHAMBER, AND VALVE MEANS SLIDABLY DISPOSED FOR TRANSLATIONAL MOVEMENT IN SAID FLUID CHAMBER FOR LOWERING THE AVAILABLE PRESSURE TO SAID FORCE OPERABLE MEANS FROM SAID FLUID PRESSURE SOURCE A FIXED AMOUNT BELOW THE INPUT PRESSURE TO SAID FLUID CHAMBER, SAID VALVE MEANS HAVING DIFFERENTIAL AREAS ACTED ON BY AN INPUT PRESSURE AND BY ATMOSPHERIC PRESSURE.
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |