US2917894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operation of solid propellant rockets
Assignee: Phillips Petroleum Co
•
Filing: 1953-03-06
•
Granted: 1959-12-22
•
Expires: 1973-03-06
Abstract
No abstract record available.
Inventors
- 👤 Homer M Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:16
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/95
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
AN IMPROVED COMBUSTION APPARATUS FOR SOLID PROPELLANT ROCKETS WHICH COMPRISES AN ELONGATED CONTAINER ENCLOSED AT ONE END ONLY AND ENCOMPASSING A MAIN COMBUSTION CHAMBER; A NOZZLE CONNECTED TO THE OPEN END OF SAID CONTAINER AND COMMUNICATING WITH SAID MAIN COMBUSTION CHAMBER; A PRESSURE DIAPHRAGM POSITIONED IN SAID NOZZLE; A SECOND CONTAINER EMCOMPASSING AN AUXILIARY COMBUSTION CHAMBER, SAID AUXILIARY CHAMBER COMMUNICATING WITH SAID MAIN COMBUTION CH AMBER; MEANS FOR
Claim 2
Dependent Claim
68 words
AN IMPROVED COMBUSTION APPARATUS FOR SOLID PROPELLANT ROCKETS WHICH COMPRISES AN ELONGATED CONTAINER ENCLOSED AT ONE END ONLY AND ENCOMPASSING A MAIN COMBUSTION CHAMBER; A NOZZLE CONNECTED TO THE OPEN END OF SAID CONTAINER AND COMMUNICATING WITH SAID MAIN COMBUSTION CHAMBER; A PRESSURE DIAPHRAGM POSITIONED IN SAID NOZZLE; A SECOND CONTAINER EMCOMPASSING AN AUXILIARY COMBUSTION CHAMBER, SAID AUXILIARY CHAMBER COMMUNICATING WITH SAID MAIN COMBUTION CH AMBER; MEANS FOR
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) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |