US3143853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid propellant burn area control
Assignee: Motors Liquidation Co
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Filing: 1961-12-28
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Granted: 1964-08-11
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Expires: 1981-12-28
Abstract
No abstract record available.
Inventors
- 👤 Albert J Sobey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:51
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/08; F02K9/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A SOLID PROPELLANT REACTION MOTOR COMPRISING A HOLLOW CASING FORMED WITH A FLUID JET EXHAUST NOZZLE AT ONE END AND CONTAINING A SOLID PROPELLANT GRAIN SPACED FROM SAID NOZZLE TO DEFINE A COMBUSTION CHAMBER BETWEEN, SAID GRAIN BURNING REGRESSIVELY FROM ITS SURFACE EXPOSED TO THE COMBUSTION CHAMBER GENERATING A GAS UNDER PRESSURE IN SAID CHAMBER, AND CONTROL MEANS TO MAINTAIN CONSTANT
Claim 2
Dependent Claim
61 words
A SOLID PROPELLANT REACTION MOTOR COMPRISING A HOLLOW CASING FORMED WITH A FLUID JET EXHAUST NOZZLE AT ONE END AND CONTAINING A SOLID PROPELLANT GRAIN SPACED FROM SAID NOZZLE TO DEFINE A COMBUSTION CHAMBER BETWEEN, SAID GRAIN BURNING REGRESSIVELY FROM ITS SURFACE EXPOSED TO THE COMBUSTION CHAMBER GENERATING A GAS UNDER PRESSURE IN SAID CHAMBER, AND CONTROL MEANS TO MAINTAIN CONSTANT
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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |