US3263564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impulse valve
Assignee: Individual
•
Filing: 1964-12-22
•
Granted: 1966-08-02
•
Expires: 1984-12-22
Abstract
No abstract record available.
Inventors
- 👤 William F Donovan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:49
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/44; F02K9/56
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
148 words
AN IMPULSE VALVE FOR ADMITTING PRESSURIZED PROPELLANT FROM A TANK TO THE COMBUSTION CHAMBER OF A LIQUID PROPELLANT ROCKET ADAPTED TO BE FIRED FROM A GUN BARREL COMPRISING A VALVE BODY HAVING A BORE THEREIN, A PAIR OF SPACED INLET CONDUITS COMMUNICATING BETWEEN THE TANK AND SAID BORE AND A DISCHARGE PORT COMMUNICATING BETWEEN SAID BORE AND SAID COMBUSTION CHAMBER AND A PAIR OF VALVE OPERATING ELEMENTS SLIDABLE IN SAID BORE; SAFE POMENTS ADAPTED TO BE INITIALLY MOVED INTO A BORE SAFE POSITION IN SAID BORE BY THE APPLICATION OF HYDROSTATIC PRESURE GENERATED BY SET-BACK FORCES OF SAID GUN WHILE SAID ROCKET IS IN THE BARREL OF SAID GUN WHEREBY SAID VALVE OPERATING ELEMENTS MAY BE AUTOMATICALLY MOVED INTO A POSITION IN SAID BORE WHEREBY SAID VALVE IS FULLY OPEN UPON APPLICATION OF PROPELLANT PRESSURE FROM THE TANK WHEN SAID ROCKET HAS LEFT THE BARREL OF SAID GUN.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |