US5117757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rocket motor insulation and like made with thin tacky ribbon
Assignee: Northrop Grumman Innovation Systems LLC
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Filing: 1990-01-22
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Granted: 1992-06-02
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Expires: 2010-01-22
Abstract
Abstract A method of making an elastomer lined composite vessel or portion of such vessel is disclosed. The method comprises causing a thin, tacky ribbon comprising an elastomer (preferably curable) to continuously so encircle a center rotational axis of a madrel as to adjacently position and tack together integral segments of the ribbon substantially circumferentially relative to this center rotational axis thereby forming a layer of the elastomer about the mandrel which may be the shell of the pressure vessel in case of internal application of the insulator or may be a workpiece around which the shell is built over the so-layed ribbon.
Inventors
- 👤 John D. Marks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:00
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/56; B29C53/58; B29C53/60; B29C53/602; B29C53/581; B29K; B29K2021/00; B29L; B29L2009/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
61 words
A method of insulating a rocket motor case having a dome which comprises forming a continuous layer of curable elastomer with a thin, tacky ribbon by adjacently positioning and tacking integral segments of said ribbon together in a shape conforming to at least that portion of said rocket motor case that includes said dome and then curing said elastomer under pressure.
Claim 2
Independent Claim
61 words
A method of insulating a rocket motor case having a dome which comprises forming a continuous layer of curable elastomer with a thin, tacky ribbon by adjacently positioning and tacking integral segments of said ribbon together in a shape conforming to at least that portion of said rocket motor case that includes said dome and then curing said elastomer under pressure.
Claim 3
Dependent Claim
15 words
A method in accordance with claim 1, wherein said curing comprises heating in an autoclave.
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) | 1995-06-02 | 1995-12-02 | 1996-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-02 | 1999-12-02 | 2000-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-02 | 2003-12-02 | 2004-06-02 | $7700.00 | Window Closed / Lapsed |