US2813487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deflagration inhibited powder grains and method of making same
Assignee: Individual
•
Filing: 1945-09-26
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Granted: 1957-11-19
•
Expires: 1965-09-26
Abstract
No abstract record available.
Inventors
- 👤 Glen W Miller
- 👤 Paul A Longwell
- 👤 Bruce H Sage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:59
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/08; F02K9/26
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
67 words
A PROPELLANT GRAIN FOR USE IN ROCKET MOTORS, COMPRISING A PROPELLANT BODY HAVING EXTENDED PORTIONS ADAPTED TO SUPPORT THE GRAIN IN A ROCKET MOTOR, DEFLAGRATION INHIBITOR MENBERS ON THE OUTER EXTREMITIES OF SAID EXTENDED PORTIONS TO INHIBIT DEFLAGRATION, THEREBY CAUSING SAID PORTIONS TO REMAIN AND SUPPORT THE PROPELLANT GRAIN FOR SUBSTANTIALLY THE ENTIRE BURNING PERIOD OF THE PROPELLANT GRAIN, AND MEANS BONDING SAID MEMBERS TO SAID GRAIN.
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) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |