US3583162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure and solid propellant grain support for a solid propellant rocket motor
Assignee: ATK Launch Systems LLC
•
Filing: 1969-03-07
•
Granted: 1971-06-08
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Expires: 1989-03-07
Abstract
Abstract A closure for sealing the nozzle of a rocket motor having attached thereto a flexible, inflatable, self-contracting support for the solid propellant grain in the rocket motor.
Inventors
- 👤 Thomas A Neely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:43
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/08; F02K9/32; F02K9/36; F02K9/34; F02K9/343; F02K9/97; F02K9/978
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
41 words
The combination of claim 1 wherein the contractable means is an extended coil spring positioned within said inflatable support means and bonded thereto whereby upon deflation of said support means said spring contracts by coiling and to collapse said support means.
Claim 2
Dependent Claim
23 words
The combination of claim 2 wherein said means for inflating said support means is a valve for passage of a pressurizing gas therethrough.
Claim 3
Dependent Claim
26 words
The combination of claim 3 wherein said valve is provided with an enlarged head for retaining one end of said coil spring on said closure means.
Claim 4
Dependent Claim
23 words
The combination of claim 4 further including means for retaining said valve and said coil spring in fixed relation to said closure means.
References Cited (Backward Citations)
US3009385A
Cited
US3121993A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |