US3170291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liner for propellant grains
Assignee: RTX Corp
•
Filing: 1963-07-01
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Granted: 1965-02-23
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Expires: 1983-07-01
Abstract
No abstract record available.
Inventors
- 👤 Barnet R Adelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:48
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/08; F02K9/10; F02K9/18; F02K9/32; F02K9/34; F02K9/346
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A GAS GENERATOR HAVING IN COMBINATION: A CENTRALLY PERFORATED, SUBSTANTIALLY CYLINDRICAL, SOLID PROPELLANT GRAIN; A CASING FOR CONTAINING SAID GRAN HAVING AT LEAST ONE CAVITY AT THE FORWARD AND AFT ENDS WHEREIN ACCUMULATED GASES TEND TO WORK INTO THE INTERFACE BETWEEN THE CASING AND THE GRAIN; AND MEANS FOR BONDING SAID OUTSIDE SURFACE OF SAID GRAIN TO THE INSIDE SURFACE OF SAID CASING COMPRISING A HOLLOW CYLINDRICAL BODY OF A PREDETERMINED THICKNESS AND AT LEAST ONE CENTRALLY PERFORATED DISC OF SUBSTANTIALLY UNIFORM THICKNESS INTEGRAL TO THE INSIDE SURFACE OF SAID CYLINDRICAL BODY AND EXTENDING INTO SAID PROPELLANT GRAIN FOR A PREDETERMINED DISTANCE WHEREBY EACH SAID DISC TENDS TO PROHIBIT SEEPAGE OF HOT GASES FROM EACH SAID CAVITY ALONG THE INTERFACE.
Claim 2
Dependent Claim
120 words
A GAS GENERATOR HAVING IN COMBINATION: A CENTRALLY PERFORATED, SUBSTANTIALLY CYLINDRICAL, SOLID PROPELLANT GRAIN; A CASING FOR CONTAINING SAID GRAN HAVING AT LEAST ONE CAVITY AT THE FORWARD AND AFT ENDS WHEREIN ACCUMULATED GASES TEND TO WORK INTO THE INTERFACE BETWEEN THE CASING AND THE GRAIN; AND MEANS FOR BONDING SAID OUTSIDE SURFACE OF SAID GRAIN TO THE INSIDE SURFACE OF SAID CASING COMPRISING A HOLLOW CYLINDRICAL BODY OF A PREDETERMINED THICKNESS AND AT LEAST ONE CENTRALLY PERFORATED DISC OF SUBSTANTIALLY UNIFORM THICKNESS INTEGRAL TO THE INSIDE SURFACE OF SAID CYLINDRICAL BODY AND EXTENDING INTO SAID PROPELLANT GRAIN FOR A PREDETERMINED DISTANCE WHEREBY EACH SAID DISC TENDS TO PROHIBIT SEEPAGE OF HOT GASES FROM EACH SAID CAVITY ALONG THE INTERFACE.
References Cited (Backward Citations)
US3064423A
Cited
US3090196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |