US3082744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servomotor control valve
Assignee: Bendix Corp
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Filing: 1961-08-02
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Granted: 1963-03-26
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Expires: 1981-08-02
Abstract
No abstract record available.
Inventors
- 👤 Delbert J Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:05
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/24; B60T13/46; B60T13/52; B60T13/57
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
IN A FLUID PRESSURE SERVOMOTOR AND THE LIKE: A HOUSING; A PRESSURE RESPONSIVE MOVABLE WALL IN SAID HOUSING MOVABLE IN FIRST AND OPPOSITE DIRECTIONS; VALVE MEANS IN SAID MOVABLE WALL FOR CONTROLLING DIFFERENTIAL PRESSURE ACROSS SAID MOVABLE WALL, SAID VALVE MEANS INCLUDING A CONTROL MEMBER HAVING A CENTER POSITION WHEREIN IT PREVENTS FLUID FLOW TO EITHER SIDE OF SAID MOVABLE WALL, A WIDE OPEN ACTUATING POSITION SPACED IN SAID FIRST DIRECTION FROM SAID CENTER POSITION WHEREIN IT CAUSES A PRESSURE DIFFERENTIAL ACROSS SAID MOVABLE WALL WHICH BIASES SAID MOVABLE WALL IN SAID FIRST DIRECTION, AND A WIDE OPEN RETRACTED POSITION SPACED IN SAID OPPOSITE DIRECTION FROM SAID CENTER POSITION WHEREIN IT DECREASES SAID PRESSURE DIFFERENTIAL ACROSS SAID MOVABLE WALL TO CAUSE SAID MOVABLE WALL TO MOVE IN SAID OPPOSITE DIRECTION; FIRST STOP MEANS LIMITING MOVEMENT OF SAID MOVABLE WALL IN SAID OPPOSITE DIRECTION; AND SECOND STOP MEANS WHICH MOVES SAID CONTROL MEMBER FROM ITS WIDE OPEN RETRACTED POSITION TOWARD SAID CENTER POSITION WHEN SAID FIRST STOP MEANS HAS LIMITED MOVEMENT OF SAID MOVABLE WALL, SAID SECOND STOP MEANS BEING ADJUSTABLE.
Claim 2
Dependent Claim
180 words
IN A FLUID PRESSURE SERVOMOTOR AND THE LIKE: A HOUSING; A PRESSURE RESPONSIVE MOVABLE WALL IN SAID HOUSING MOVABLE IN FIRST AND OPPOSITE DIRECTIONS; VALVE MEANS IN SAID MOVABLE WALL FOR CONTROLLING DIFFERENTIAL PRESSURE ACROSS SAID MOVABLE WALL, SAID VALVE MEANS INCLUDING A CONTROL MEMBER HAVING A CENTER POSITION WHEREIN IT PREVENTS FLUID FLOW TO EITHER SIDE OF SAID MOVABLE WALL, A WIDE OPEN ACTUATING POSITION SPACED IN SAID FIRST DIRECTION FROM SAID CENTER POSITION WHEREIN IT CAUSES A PRESSURE DIFFERENTIAL ACROSS SAID MOVABLE WALL WHICH BIASES SAID MOVABLE WALL IN SAID FIRST DIRECTION, AND A WIDE OPEN RETRACTED POSITION SPACED IN SAID OPPOSITE DIRECTION FROM SAID CENTER POSITION WHEREIN IT DECREASES SAID PRESSURE DIFFERENTIAL ACROSS SAID MOVABLE WALL TO CAUSE SAID MOVABLE WALL TO MOVE IN SAID OPPOSITE DIRECTION; FIRST STOP MEANS LIMITING MOVEMENT OF SAID MOVABLE WALL IN SAID OPPOSITE DIRECTION; AND SECOND STOP MEANS WHICH MOVES SAID CONTROL MEMBER FROM ITS WIDE OPEN RETRACTED POSITION TOWARD SAID CENTER POSITION WHEN SAID FIRST STOP MEANS HAS LIMITED MOVEMENT OF SAID MOVABLE WALL, SAID SECOND STOP MEANS BEING ADJUSTABLE.
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) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |