US3312103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic pressure control apparatus
Assignee: TH Kieserling and Albrecht GmbH and Co
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Filing: 1965-03-23
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Granted: 1967-04-04
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Expires: 1985-03-23
Abstract
No abstract record available.
Inventors
- 👤 Goeke Alfons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:42
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/14; G05D16/16; G05D16/166; F; F15; F15B; F15B11/00; F15B11/02; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/28; G01M3/2846; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/20507; F15B2211/20515; F15B2211/2053; F15B2211/20538; F15B2211/30; F15B2211/305; F15B2211/30505; F15B2211/40; F15B2211/405; F15B2211/40515; F15B2211/41; F15B2211/411; F15B2211/50; F15B2211/505; F15B2211/50509; F15B2211/50518; F15B2211/50554; F15B2211/50563; F15B2211/515; F15B2211/5151; F15B2211/52; F15B2211/528; F15B2211/55; F15B2211/565; F15B2211/57; F15B2211/60; F15B2211/635; F15B2211/6355; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7052; F15B2211/7053; F15B2211/71; F15B2211/80; F15B2211/855; F15B2211/87; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/2617
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
207 words
HYDRAULIC PRESSURE CONTROL APPARATUS, COMPRISING, IN COMBINATION, FIRST HYDRAULIC PRESSURE RESPONSIVE MEANS; SECOND HYDRAULIC PRESSURE RESPONSIVE MEANS; PRESSURE PRODUCING MEANS; CONDUIT MEANS CONNECTING SAID PRESSURE PRODUCING MEANS WITH SAID FIRST AND SECOND PRESSURE RESPONSIVE MEANS AND INCLUDING A FIRST CONDUIT CONNECTED WITH SAID FIRST PRESSURE RESPONSIV E MEANS AND A SECOND CONDUIT CONNECTED WITH SAID SECOND PRESSURE RESPONSIVE MEANS; A CONTROL VALVE MEANS HAVING AN OUTLET AND INCLUDING A CONTROL VALVE MEMBER MOVABLE BETWEEN A POSITION CLOSING SAID OUTLET AND AN OPEN POSITION, AND BEING OPERABLE BY FLUID TO MOVE TO SAID OPEN POSITION; FLUID OPERATED MEANS CONNECTED WITH SAID FIRST CONDUIT RESPONSIVE TO PRESSURE IN SAID FIRST PRESSURE RESPONSIVE MEANS AND INCLUDING MOVABLE OPERATING MEANS OPERATIVELY CONNECTED WITH SAID CONTROL VALVE MEMBER FOR URGING THE SAME TO SAID CLOSING POSITION WITH A FORCE DEPENDING ON THE PRESSURE IN SAID FIRST PRESSURE RESPONSIVE MEANS; AND A VALVE IN SAID SECOND CONDUIT COMMUNICATING WITH SAID CONTROL VALVE MEANS SO THAT UPON A PRESSURE INCREASE IN SAID SECOND PRESSURE RESPONSIVE MEANS, PRESSURE FLUID FROM SAID SECOND CONDUIT MOVES SAID CONTROL VALVE MEMBER TO SAID OPEN POSITION AND IS DISCHARGED THROUGH SAID OUTLET WHEREBY THE PRESURES IN SAID FIRST AND SECOND PRESSURE RESPONSIVE MEANS ARE MAINTAINED AT A PREDETERMINED RATIO.
Claim 2
Dependent Claim
207 words
HYDRAULIC PRESSURE CONTROL APPARATUS, COMPRISING, IN COMBINATION, FIRST HYDRAULIC PRESSURE RESPONSIVE MEANS; SECOND HYDRAULIC PRESSURE RESPONSIVE MEANS; PRESSURE PRODUCING MEANS; CONDUIT MEANS CONNECTING SAID PRESSURE PRODUCING MEANS WITH SAID FIRST AND SECOND PRESSURE RESPONSIVE MEANS AND INCLUDING A FIRST CONDUIT CONNECTED WITH SAID FIRST PRESSURE RESPONSIV E MEANS AND A SECOND CONDUIT CONNECTED WITH SAID SECOND PRESSURE RESPONSIVE MEANS; A CONTROL VALVE MEANS HAVING AN OUTLET AND INCLUDING A CONTROL VALVE MEMBER MOVABLE BETWEEN A POSITION CLOSING SAID OUTLET AND AN OPEN POSITION, AND BEING OPERABLE BY FLUID TO MOVE TO SAID OPEN POSITION; FLUID OPERATED MEANS CONNECTED WITH SAID FIRST CONDUIT RESPONSIVE TO PRESSURE IN SAID FIRST PRESSURE RESPONSIVE MEANS AND INCLUDING MOVABLE OPERATING MEANS OPERATIVELY CONNECTED WITH SAID CONTROL VALVE MEMBER FOR URGING THE SAME TO SAID CLOSING POSITION WITH A FORCE DEPENDING ON THE PRESSURE IN SAID FIRST PRESSURE RESPONSIVE MEANS; AND A VALVE IN SAID SECOND CONDUIT COMMUNICATING WITH SAID CONTROL VALVE MEANS SO THAT UPON A PRESSURE INCREASE IN SAID SECOND PRESSURE RESPONSIVE MEANS, PRESSURE FLUID FROM SAID SECOND CONDUIT MOVES SAID CONTROL VALVE MEMBER TO SAID OPEN POSITION AND IS DISCHARGED THROUGH SAID OUTLET WHEREBY THE PRESURES IN SAID FIRST AND SECOND PRESSURE RESPONSIVE MEANS ARE MAINTAINED AT A PREDETERMINED RATIO.
References Cited (Backward Citations)
US2705888A
Cited
US2883859A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |