US3211063A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure control switching valve
Assignee: Individual
•
Filing: 1962-10-03
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Granted: 1965-10-12
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Expires: 1982-10-03
Abstract
No abstract record available.
Inventors
- 👤 Seamone Woodrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:32
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; F15B13/042; F15B13/043; F15B13/0438; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86582; Y10T137/8659; Y10T137/86598
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A PRESSURE CONTROL VALVE COMPRISING A PAIR OF OUTPUT CONDUITS, A SOURCE OF FLUID PRESSURE, A MOVABLE CONTROL SPOOL LOCATED BETWEEN SAID PRESSURE SOURCE AND EACH OF SAID OUTPUT CONDUITS FOR SELECTIVELY APPLYING FLUID PRESSURE TO ONE OF SAID OUTPUT CONDUITS, AN INTEGRATING CHAMBER LOCATED ON EITHER END OF SAID CONTROL SPOOL WHEREBY THE CREATION OF A PRESSURE DIFFERENTIAL BETWEEN SAID INTEGRATING CHAMBERS WILL EFFECT A MOVEMENT OF SAID CONTROL SPOOL, A NOZZLE CONNECTED TO EACH INTEGRATING CHAMBER FOR SELECTIVELY VENTING SAID CHAMBERS IN RESPONSE TO AN EXTERNAL CONTROL SIGNAL, AND MEANS FOR PROVIDING A DIRECT FLUID PATH FROM THE OUTPUT CONDUIT CONNECTED TO SAID PRESSURE SOURCE TO THE
Claim 2
Dependent Claim
109 words
A PRESSURE CONTROL VALVE COMPRISING A PAIR OF OUTPUT CONDUITS, A SOURCE OF FLUID PRESSURE, A MOVABLE CONTROL SPOOL LOCATED BETWEEN SAID PRESSURE SOURCE AND EACH OF SAID OUTPUT CONDUITS FOR SELECTIVELY APPLYING FLUID PRESSURE TO ONE OF SAID OUTPUT CONDUITS, AN INTEGRATING CHAMBER LOCATED ON EITHER END OF SAID CONTROL SPOOL WHEREBY THE CREATION OF A PRESSURE DIFFERENTIAL BETWEEN SAID INTEGRATING CHAMBERS WILL EFFECT A MOVEMENT OF SAID CONTROL SPOOL, A NOZZLE CONNECTED TO EACH INTEGRATING CHAMBER FOR SELECTIVELY VENTING SAID CHAMBERS IN RESPONSE TO AN EXTERNAL CONTROL SIGNAL, AND MEANS FOR PROVIDING A DIRECT FLUID PATH FROM THE OUTPUT CONDUIT CONNECTED TO SAID PRESSURE SOURCE TO THE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |