US3095907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servo valve
Assignee: Borg Warner Corp
•
Filing: 1958-04-21
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Granted: 1963-07-02
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Expires: 1978-04-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Allen Latham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:09
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/16; B; B64; B64C; B64C13/00; B64C13/24; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86694
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A FLUID CONTROL VALVE DEVICE COMPRISING: A HOUSING HAVING A BORE THEREIN; MEANS DEFINING A PLURALITY OF SPACED PASSAGE MEANS DISPOSED IN SAID HOUSING INTERCONNECTING SAID BORE WITH THE EXTERIOR OF SAID HOUSING INTERCONPASSAGE MEANS INCLUDING AT LEAST ONE PASSAGE MEANS AND A PAIR OF PASSAGE MEANS BEING SO DISPOSED WHEREBY EACH PASSAGE MEANS OF SAID PAIR ID DISPOSED WHEREBY EACH ONE PASSAGE MEANS; MOVABLE PISTON MEANS DISPOSED IN SAID BORE, SAID PISTON MEANS HAVING MEDIAL RECESS MEANS FORMED THEREIN; BIASING MEANS CARRIED BY SAID HOUSING TENDING TO MAINTAIN SAID PISTON MEANS IN A PREDETERMINED POSITION RELATIVE TO SAID HOUSING; PIN MEANS CARRIED BY SAID PISTON MEANS DIVIDING SAD RECESS MEANS INTO SECTIONS, ONE OF SAID PIN MEANS BEING ADAPTED TO PREVENT FLUID COMMUNICATION BETWEEN SAID ONE PASSAGE MEANS AND EACH PASSAGE MEANS OF SAID PAIR OF PASSAGE MEANS WHEN SAID PISTON MEANS IS IN SAID PREDETERMINED POSITION; AND MEANS CARRIED BY SAID HOUSING BEING ADAPTED TO CAUSE SELECTED AXIAL MOVEMENT OF SAID PISTON MEANS RELATIVE TO SAID HOUSING IN OPPOSITION TO SAID BIASING
Claim 2
Dependent Claim
174 words
A FLUID CONTROL VALVE DEVICE COMPRISING: A HOUSING HAVING A BORE THEREIN; MEANS DEFINING A PLURALITY OF SPACED PASSAGE MEANS DISPOSED IN SAID HOUSING INTERCONNECTING SAID BORE WITH THE EXTERIOR OF SAID HOUSING INTERCONPASSAGE MEANS INCLUDING AT LEAST ONE PASSAGE MEANS AND A PAIR OF PASSAGE MEANS BEING SO DISPOSED WHEREBY EACH PASSAGE MEANS OF SAID PAIR ID DISPOSED WHEREBY EACH ONE PASSAGE MEANS; MOVABLE PISTON MEANS DISPOSED IN SAID BORE, SAID PISTON MEANS HAVING MEDIAL RECESS MEANS FORMED THEREIN; BIASING MEANS CARRIED BY SAID HOUSING TENDING TO MAINTAIN SAID PISTON MEANS IN A PREDETERMINED POSITION RELATIVE TO SAID HOUSING; PIN MEANS CARRIED BY SAID PISTON MEANS DIVIDING SAD RECESS MEANS INTO SECTIONS, ONE OF SAID PIN MEANS BEING ADAPTED TO PREVENT FLUID COMMUNICATION BETWEEN SAID ONE PASSAGE MEANS AND EACH PASSAGE MEANS OF SAID PAIR OF PASSAGE MEANS WHEN SAID PISTON MEANS IS IN SAID PREDETERMINED POSITION; AND MEANS CARRIED BY SAID HOUSING BEING ADAPTED TO CAUSE SELECTED AXIAL MOVEMENT OF SAID PISTON MEANS RELATIVE TO SAID HOUSING IN OPPOSITION TO SAID BIASING
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-01 | 1966-12-31 | 1967-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-01 | 1970-12-31 | 1971-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-01 | 1974-12-31 | 1975-07-02 | $7700.00 | Window Closed / Lapsed |