Patent US3228423A successfully refreshed from Google Patents.
US3228423A
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Fluid control valve in which a mechanical motion is transmitted from a dry region to a pressurized fluid filled region
Assignee: MOOG SERVOCONTROLS Inc
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Filing: 1956-01-23
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Granted: 1966-01-11
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Expires: 1976-01-23
Abstract
No abstract record available.
Inventors
- 👤 Jr William C Moog
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:16
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; F15B13/042; F15B13/043; F15B13/0438; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86582; Y10T137/8659; Y10T137/86598; Y10T137/86606; Y10T137/86614
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
70 words
IN AN ELECTRICALLY OPERATED SERVO VALVE, THE COMBINATION COMPRISING A POLARIZED ELECTRICAL FORCE MOTOR SECTION INCLUDING SPACED POLE PIECES, A RIGID ARMATURE MEMBER MOVABLY ARRANGED BETWEEN SAID POLE PIECES, A FLEXURE TUBE MOUNTING SAID ARMATURE MEMBER AND PERMITTING PIVOTAL MOVEMENT THEREOF, AND A FLUID SECTION INCLUDING FLUID FLOW MEANS OPERATIVELY RESPONSIVE TO THE PIVOTAL MOVEMENT OF SAID ARMATURE MEMBER, SAID FLEXURE TUBE SEALING SAID MOTOR SECTION FROM SAID FLUID SECTION.
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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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |