US3099280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-hydraulic servovalve
Assignee: Vickers Inc
•
Filing: 1960-11-16
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Granted: 1963-07-30
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Expires: 1980-11-16
Abstract
No abstract record available.
Inventors
- 👤 Werner G Holzbock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:39
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; F15B13/044; F15B13/0446; F15B13/042; F15B13/043; F15B13/0436; Y; Y10; Y10S; Y10S251/00; Y10S251/905; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2322; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
129 words
IN AN ELECTRO-HYDRAULIC SERVOVALVE, HOUSING FORMED TO PROVIDE A CAVITY, A JET NOZZLE ARRANGEMENT POSITIONED IN SAID CAVITY AND INCLUDING, AN ELONGATED SLIDABLE MEMBER FORMED TO PROVIDE A UNIFORM DIAMETER OPENING THE AXIS OF WHICH IS NORMAL TO THE LONGITUDINAL AXIS OF THE SLIDABLE MEMBER, SAID OPENING BEING ARRANGED TO DEVELOP A JET STEAM OF PRESSURIZED MEDIUM AS IT PASSES THROUGH THE SLIDABLY MEMBER IN A UNIDIRECTIONAL MANNER, A JET STREAM RECEIVER MEANS POSITIONED IN SAID CAVITY AND FORMED TO PROVIDE A RECEIVING ORIFICE FOR RECEIVING THE JET STREAM FROM THE SLIDABLE MEMBER AND A PASSAGEWAY MEANS ASSOCIATED WITH SAID RECEIVING ORIFIC FOR CONDUCTING PRESSURIZED FLUID OUT OF THE SEROVALVE, AND MEANS TO PROVIDE MOVEMENT OF SAID SLIDABLE MEMBER IN RESPONSE TO A CONTROL SIGNAL FED TO THE SERVOVALVE.
References Cited (Backward Citations)
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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) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |