Patent US3405728A successfully refreshed from Google Patents.
US3405728A
Expired / Lapsed
US
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Electro-viscous fluid valve
Assignee: General Electric Co
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Filing: 1963-06-03
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Granted: 1968-10-15
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Expires: 1983-06-03
Abstract
No abstract record available.
Inventors
- 👤 Edwin M Dexter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:48
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; Y; Y10; Y10T; Y10T137/00; Y10T137/4456; Y10T137/4643
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
AN ELECTRO-VISCOUS FLUID VALVE COMPRISING: A PASSAGE FOR SUPPORTING THE FLOW OF ELECTRO-VISCOUS FLUID, SAID FLUID CONSISTING OF A DIELECTRIC FLUID WHICH TENDS TO UNDERGO AN EFFECTIVE CHANGE IN VISCOSITY WHEN SUBJECTED TO AN ELECTROSTATIC FIELD; A MULTIPLICITY OF ELECTRODES, SUBSTANTIALLY LONGITUDINALLY COEXTENSIVE, DISPOSED IN SAID PASSAGE THROUGH WHICH SAID FLUID IS CONSTRAINED TO PASS; AND MEANS TO CONTROL THE VISCOSITY AND THEREFORE THE RATE OF FLOW OF SAID FLUID COMPRISING MEANS FOR ENERGIZING EACH OF SAID ELECTRODES AT A DIFFERENT VOLTAGE FROM ITS NEXT ADJACENT ELECTRODE.
Claim 2
Dependent Claim
87 words
AN ELECTRO-VISCOUS FLUID VALVE COMPRISING: A PASSAGE FOR SUPPORTING THE FLOW OF ELECTRO-VISCOUS FLUID, SAID FLUID CONSISTING OF A DIELECTRIC FLUID WHICH TENDS TO UNDERGO AN EFFECTIVE CHANGE IN VISCOSITY WHEN SUBJECTED TO AN ELECTROSTATIC FIELD; A MULTIPLICITY OF ELECTRODES, SUBSTANTIALLY LONGITUDINALLY COEXTENSIVE, DISPOSED IN SAID PASSAGE THROUGH WHICH SAID FLUID IS CONSTRAINED TO PASS; AND MEANS TO CONTROL THE VISCOSITY AND THEREFORE THE RATE OF FLOW OF SAID FLUID COMPRISING MEANS FOR ENERGIZING EACH OF SAID ELECTRODES AT A DIFFERENT VOLTAGE FROM ITS NEXT ADJACENT ELECTRODE.
References Cited (Backward Citations)
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US1736643A
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US3105379A
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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) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |