US3289412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hybrid injector
Assignee: Individual
•
Filing: 1965-03-29
•
Granted: 1966-12-06
•
Expires: 1985-03-29
Abstract
No abstract record available.
Inventors
- 👤 Bernard L Iwanciow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:48
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
IN A HYBRID BI-PROPELLANT ROCKET MOTOR OF THE TYPE WHEREIN ONE OF THE PROPELLANTS IS A SOLID CYLINDRICAL GRAIN HAVING A CENTRAL PORT EXTENDING BETWEEN OPPOSITE ENDS THEREOF AND THE OTHER PROPELLANT IS A LIQUID ADAPTED TO BE INJECTED AXIALLY OF THE PORT, THE IMPROVEMENTS, IN COMBINATION, COMPRISING: (A) A NOZZLE DISK OF FORAMINOUS MATERIAL ABUTTING THE ANNULAR END SURFACE AT THE FRONT END OF THE GRAIN HAVING SPACED APERTURES EXTENDING THERETHROUGH COMMUNICATING WITH SAID PORT AT THE COMMENCEMENT OF COMBUSTION AND OTHER LIKE APERTURES BLOCKED FROM COMMUNICATON BY THE ANNULAR END SURFACE OF THE GRAIN, SAID OTHER APERTURES ADAPTED TO COMMUNICATE WITH THE PORT AS IT ENLARGES IN DIAMETER WHEN THE ANNULAR END SURFACE REDUCES IN AREA, (B) A MANIFOLD DISPOSED FORWARDLY OF SAID NOZZLE PLATE COMMUNICATING WITH ALL OF SAID APERTURES,
Claim 2
Dependent Claim
133 words
IN A HYBRID BI-PROPELLANT ROCKET MOTOR OF THE TYPE WHEREIN ONE OF THE PROPELLANTS IS A SOLID CYLINDRICAL GRAIN HAVING A CENTRAL PORT EXTENDING BETWEEN OPPOSITE ENDS THEREOF AND THE OTHER PROPELLANT IS A LIQUID ADAPTED TO BE INJECTED AXIALLY OF THE PORT, THE IMPROVEMENTS, IN COMBINATION, COMPRISING: (A) A NOZZLE DISK OF FORAMINOUS MATERIAL ABUTTING THE ANNULAR END SURFACE AT THE FRONT END OF THE GRAIN HAVING SPACED APERTURES EXTENDING THERETHROUGH COMMUNICATING WITH SAID PORT AT THE COMMENCEMENT OF COMBUSTION AND OTHER LIKE APERTURES BLOCKED FROM COMMUNICATON BY THE ANNULAR END SURFACE OF THE GRAIN, SAID OTHER APERTURES ADAPTED TO COMMUNICATE WITH THE PORT AS IT ENLARGES IN DIAMETER WHEN THE ANNULAR END SURFACE REDUCES IN AREA, (B) A MANIFOLD DISPOSED FORWARDLY OF SAID NOZZLE PLATE COMMUNICATING WITH ALL OF SAID APERTURES,
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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |