Patent US3188802A successfully refreshed from Google Patents.
US3188802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid propellant grain
Assignee: ATK Launch Systems LLC
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Filing: 1961-11-29
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Granted: 1965-06-15
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Expires: 1981-11-29
Abstract
No abstract record available.
Inventors
- 👤 Davies Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:21
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/08; F02K9/32; F02K9/36; F02K9/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
IN A GAS GENERATOR, A CASING, A GRAIN OF A SOLID COMBUSTIBLE MATERIAL FREELY MOVABLE INSAID CASING, SAID GRAIN HAVING AN EXPOSED SURFACE FOR BURNING AT A CONTROLLED RATE, AN OUTER SHELL OF A FLAME INHIBITING MATERIAL SURROUNDING THE GRAIN AND TO WHICH THE GRAIN IS BONDED, AND SAID SHELL HAVING A SLOT EXTENDING LONGITUDINALLY OF THE GRAIN TO PERMIT IT TO MOVE RELATIVE TO THE CASING TO REDUCE THE STRESS IN THE GRAIN DURING THERMAL CYCLING.
Claim 2
Dependent Claim
77 words
IN A GAS GENERATOR, A CASING, A GRAIN OF A SOLID COMBUSTIBLE MATERIAL FREELY MOVABLE INSAID CASING, SAID GRAIN HAVING AN EXPOSED SURFACE FOR BURNING AT A CONTROLLED RATE, AN OUTER SHELL OF A FLAME INHIBITING MATERIAL SURROUNDING THE GRAIN AND TO WHICH THE GRAIN IS BONDED, AND SAID SHELL HAVING A SLOT EXTENDING LONGITUDINALLY OF THE GRAIN TO PERMIT IT TO MOVE RELATIVE TO THE CASING TO REDUCE THE STRESS IN THE GRAIN DURING THERMAL CYCLING.
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FR1112030A
Cited
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Cited
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Cited
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Cited
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Cited
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Cited
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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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |