Patent US3109374A successfully refreshed from Google Patents.
US3109374A
Expired / Lapsed
US
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Propellent grains
Assignee: Atlantic Research Corp
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Filing: 1956-12-07
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Granted: 1963-11-05
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Expires: 1976-12-07
Abstract
No abstract record available.
Inventors
- 👤 Keith E Rumbel
- 👤 Cohen Melvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:58
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/08; F02K9/10; C; C06; C06B; C06B45/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A SOLID PROPELLANT GRAIN, SAID GRAIN COMPRISING A SELF-OXIDANT, SOLID PROPELLANT MATRIX, THE COMBUSTION OF WHICH GENERATES PROPELLANT GASES, AND HAVING AT LEAST ONE INITIAL EXPOSED IGNITION SURFACE, SAID MATRIX CONTAINING EMBEDDED THEREIN AN ELONGATED METAL HEAT CONDUCTOR COATED WITH A SOLID, INERT, NON-METAL COMPOSITION CHARACTERIZED BY SUBSTANTIALLY LOWER HEAT CONDUCTIVITY THAN THAT OF THE METAL, SAID COATED MEMBER HEAT CONDUCTOR BEING POSITIONED SUBSTANTIALLY NORMAL TO THE PLANE OF SAID INITIAL
Claim 2
Dependent Claim
71 words
A SOLID PROPELLANT GRAIN, SAID GRAIN COMPRISING A SELF-OXIDANT, SOLID PROPELLANT MATRIX, THE COMBUSTION OF WHICH GENERATES PROPELLANT GASES, AND HAVING AT LEAST ONE INITIAL EXPOSED IGNITION SURFACE, SAID MATRIX CONTAINING EMBEDDED THEREIN AN ELONGATED METAL HEAT CONDUCTOR COATED WITH A SOLID, INERT, NON-METAL COMPOSITION CHARACTERIZED BY SUBSTANTIALLY LOWER HEAT CONDUCTIVITY THAN THAT OF THE METAL, SAID COATED MEMBER HEAT CONDUCTOR BEING POSITIONED SUBSTANTIALLY NORMAL TO THE PLANE OF SAID INITIAL
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |