US3605811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled impedance diverter valve
Assignee: RTX Corp
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Filing: 1968-11-14
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Granted: 1971-09-20
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Expires: 1988-11-14
Abstract
Abstract A CONTROLLED IMPEDANCE DIVERTER VALUE IS PROVIDED BY THE COMBINATION OF A POPPET VALVE AND A GATE VALVE WHICH REQUIRES SMALL DISPLACEMENT TO GO FROM OPEN TO CLOSED POSITION.
Inventors
- 👤 John S Lovell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:20
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/04; F16K11/044; F16K11/052; F16K11/06; F16K11/065; F16K11/0655; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86879; Y10T137/86887; Y10T137/877; Y10T137/87788; Y10T137/87812
Claims Analysis
Total Claims: 0
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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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |