Patent US2307447A successfully refreshed from Google Patents.
US3237641A
Expired / Lapsed
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Preselective command device
Assignee: Alsacienne de Constructions Mecaniques SA
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Filing: 1963-08-29
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Granted: 1966-03-01
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Expires: 1983-08-29
Abstract
No abstract record available.
Inventors
- 👤 Audemar Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:55
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/08; F16; F16H; F16H61/00; F16H61/02; F16H61/0262; F16H61/0274; F15B2211/00; F15B2211/30; F15B2211/305; F15B2211/30525; F15B2211/3056; F15B2211/30565; F15B2211/3059; F15B2211/32; F15B2211/321; F15B2211/327; F15B2211/329; F15B2211/60; F15B2211/625; F15B2211/70; F15B2211/71; F15B2211/7107; F16H2708/00; F16H2708/24; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622; Y10T137/8663; Y10T137/87169; Y10T137/87193; Y10T137/87201
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A TWO-POSITION VALVE, WITH PRESELECTIVE COMMAND, FOR THE CONTROL OF A PRESSURIZED FLUID CIRCUIT, COMPRISING AT LEAST A PISTON RUNNING IN A CYLINDER, SAID PISTON BEING MECHANICALLY LINKED TO THE MOVABLE SELECTOR COMPONENT OF SAID VALVE, SAID CYLINDER BEING NORMALLY IN COMMUNICATION WITH A PRESSURIZED FLUID SOURCE WHICH SELECTIVELY ACTS ON ONE OF THE FACES OF SAID PISTON TO HOLD IT IN ONE OF THE TWO POSITIONS AT THE ENDS OF ITS COURSE OF TRAVEL WHERE SAID PISTON LOCKS SAID MOVABLE COMPONENT IN ONE OF ITS TWO POSITIONS AGAINST THE FORCE OF COMMAND MEANS CONTROLLING SAID MOVABLE COMPONENT, SAID VALVE INCLUDING RELEASING MEANS FOR FREEING SAID MOVABLE COMPONENT IN RESPONSE TO THE INTERRUPTION OF THE ABOVE-MENTIONED COMMUNICATION BETWEEN SAID SOURCE AND THE OTHER SAID PISTON SUBJECTED TO PRESSURE AND FOR RE-STABLISHING THE COMMUNICATION BETWEEN SAID SOURCE AND THE OTHER FACE OF SAID PISTON WHEN SAID MOVABLE COMPONENT HAS CHANGED POSITION UNDER THE EFFECT OF SAID COMMAND MEANS. SO AS TO LOCK SAID MOVABLE COMPONENT IN ITS NEW POSITION.
Claim 2
Dependent Claim
168 words
A TWO-POSITION VALVE, WITH PRESELECTIVE COMMAND, FOR THE CONTROL OF A PRESSURIZED FLUID CIRCUIT, COMPRISING AT LEAST A PISTON RUNNING IN A CYLINDER, SAID PISTON BEING MECHANICALLY LINKED TO THE MOVABLE SELECTOR COMPONENT OF SAID VALVE, SAID CYLINDER BEING NORMALLY IN COMMUNICATION WITH A PRESSURIZED FLUID SOURCE WHICH SELECTIVELY ACTS ON ONE OF THE FACES OF SAID PISTON TO HOLD IT IN ONE OF THE TWO POSITIONS AT THE ENDS OF ITS COURSE OF TRAVEL WHERE SAID PISTON LOCKS SAID MOVABLE COMPONENT IN ONE OF ITS TWO POSITIONS AGAINST THE FORCE OF COMMAND MEANS CONTROLLING SAID MOVABLE COMPONENT, SAID VALVE INCLUDING RELEASING MEANS FOR FREEING SAID MOVABLE COMPONENT IN RESPONSE TO THE INTERRUPTION OF THE ABOVE-MENTIONED COMMUNICATION BETWEEN SAID SOURCE AND THE OTHER SAID PISTON SUBJECTED TO PRESSURE AND FOR RE-STABLISHING THE COMMUNICATION BETWEEN SAID SOURCE AND THE OTHER FACE OF SAID PISTON WHEN SAID MOVABLE COMPONENT HAS CHANGED POSITION UNDER THE EFFECT OF SAID COMMAND MEANS. SO AS TO LOCK SAID MOVABLE COMPONENT IN ITS NEW POSITION.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |