US3152603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant head control valve
Assignee: Bendix Corp
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Filing: 1961-12-22
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Granted: 1964-10-13
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Expires: 1981-12-22
Abstract
No abstract record available.
Inventors
- 👤 Harry C Zeisloft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:01
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0106; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2579; Y10T137/2594; Y10T137/2597
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
FLUID PRESSURE REGULATOR MEANS COMPRISING VALVULAR MEANS, MEANS RESPONSIVE TO A FLUID PRESSURE DIFFERENTIAL FOR ACTUATING SAID VALVULAR MEANS, RESILIENT MEANS OF PREDETERMINED EXTENSION OPPOSING ACTUATION OF SAID VALVULAR MEANS BY SAID PRESSURE RESPONSIVE MEANS, A MOVABLE PRESSURE RESPONSIVE MEMBER ABUTTING ONE END OF SAID RESILIENT MEANS, AND A PILOT VALVE MOVABLE WITH SAID VALVULAR MEANS, SAID PILOT VALVE BEING ADAPTED TO CONTROL THE PRESSURE TO WHICH SAID MEMBER RESPONDS IN SUCH A MANNER THAT THE EXTENSION OF SAID RESILIENT MEANS IS HELD SUBSTANTIALLY CONSTANT THROUGHOUT THE RANGE OF TRAVEL OF SAID VALVULAR MEANS.
Claim 2
Dependent Claim
94 words
FLUID PRESSURE REGULATOR MEANS COMPRISING VALVULAR MEANS, MEANS RESPONSIVE TO A FLUID PRESSURE DIFFERENTIAL FOR ACTUATING SAID VALVULAR MEANS, RESILIENT MEANS OF PREDETERMINED EXTENSION OPPOSING ACTUATION OF SAID VALVULAR MEANS BY SAID PRESSURE RESPONSIVE MEANS, A MOVABLE PRESSURE RESPONSIVE MEMBER ABUTTING ONE END OF SAID RESILIENT MEANS, AND A PILOT VALVE MOVABLE WITH SAID VALVULAR MEANS, SAID PILOT VALVE BEING ADAPTED TO CONTROL THE PRESSURE TO WHICH SAID MEMBER RESPONDS IN SUCH A MANNER THAT THE EXTENSION OF SAID RESILIENT MEANS IS HELD SUBSTANTIALLY CONSTANT THROUGHOUT THE RANGE OF TRAVEL OF SAID VALVULAR MEANS.
References Cited (Backward Citations)
US2149390A
Cited
US2616254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |