Patent US4960372A successfully refreshed from Google Patents.
Patent US3089511A successfully refreshed from Google Patents.
US3089511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatically actuated gate cut-off valve, responsive to pressure drop, with gate sealing means, useful in pressurized waveguides
Assignee: Post Office
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Filing: 1961-06-23
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Granted: 1963-05-14
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Expires: 1981-06-23
Abstract
No abstract record available.
Inventors
- 👤 Taylor Frederick John Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:01
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/20; F16K17/22; F16K17/32; H; H01; H01P; H01P1/00; H01P1/30; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7723
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A PRESSURE RESPONSIVE WAVE GUIDE VALVE COMPRISING A WAVE GUIDE SECTION, A GAP IN THE WAVE GUIDE SECTION WALL EXTENDING TRANSVERSELY OF THE LONGITUDINAL AXIS OF THE WAVE GUIDE SECTION A GAS-TIGHT HOUSING SURROUNDING THE GAP ON THE EXTERIOR OF THE WAVE GUIDE SECTION, AN AXLE WITHIN THE HOUSING EXTENDING PARALLEL TO THE LONGITUDINAL AXIS OF THE WAVE GUIDE SECTION, A CLOSURE DEVICE ROTATABLE ABOUT THE AXLE, THE CLOSURE DEVICE HAVING AN INOPERATIVE POSITION IN WHICH IT IS LOCATED WITHIN THE HOUSING AND BEING CAPABLE OF ROTATION THROUGH THE SAID GAP INTO AN OPERATIVE POSITION IN WHICH IT CLOSES THE WAVE GUIDE SECTION BORE, RESILIENT MEANS FOR ROTATING THE CLOSURE DEVICE, MOVABLE MEANS BIASING THE CLOSURE DEVICE IN THE SAID INOPERATIVE POSITION, AND AN ACTUATING MECHANISM INCLUDING A DEVICE RESPONSIVE TO PRESSURE WITHIN THE WAGE GUIDE SECTION FOR MOVING THE BIASING MEANS TO PERMIT ROTATION OF THE CLOSURE DEVICE BY THE RESILIENT MEANS TO THE SAID
Claim 2
Dependent Claim
156 words
A PRESSURE RESPONSIVE WAVE GUIDE VALVE COMPRISING A WAVE GUIDE SECTION, A GAP IN THE WAVE GUIDE SECTION WALL EXTENDING TRANSVERSELY OF THE LONGITUDINAL AXIS OF THE WAVE GUIDE SECTION A GAS-TIGHT HOUSING SURROUNDING THE GAP ON THE EXTERIOR OF THE WAVE GUIDE SECTION, AN AXLE WITHIN THE HOUSING EXTENDING PARALLEL TO THE LONGITUDINAL AXIS OF THE WAVE GUIDE SECTION, A CLOSURE DEVICE ROTATABLE ABOUT THE AXLE, THE CLOSURE DEVICE HAVING AN INOPERATIVE POSITION IN WHICH IT IS LOCATED WITHIN THE HOUSING AND BEING CAPABLE OF ROTATION THROUGH THE SAID GAP INTO AN OPERATIVE POSITION IN WHICH IT CLOSES THE WAVE GUIDE SECTION BORE, RESILIENT MEANS FOR ROTATING THE CLOSURE DEVICE, MOVABLE MEANS BIASING THE CLOSURE DEVICE IN THE SAID INOPERATIVE POSITION, AND AN ACTUATING MECHANISM INCLUDING A DEVICE RESPONSIVE TO PRESSURE WITHIN THE WAGE GUIDE SECTION FOR MOVING THE BIASING MEANS TO PERMIT ROTATION OF THE CLOSURE DEVICE BY THE RESILIENT MEANS TO THE SAID
References Cited (Backward Citations)
US2566774A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |