US5038561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal insulators for rocket motors
Assignee: BAE Systems Global Combat Systems Munitions Ltd
•
Filing: 1989-08-28
•
Granted: 1991-08-13
•
Expires: 2009-08-28
Abstract
Abstract A thermal insulator for a rocket motor body comprises a member adapted to be fitted as a sleeve on the outer surface of the body the member comprising a composite of cork having on its outer surface a layer of fibre reinforced polymeric material wherein a substantial proportion of the fibre reinforcement comprises fibres of low-conducting material.
Inventors
- 👤 Michael J. Chase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:11
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/08; F02K9/32; F02K9/40; F02K9/34; F02K9/346; F42; F42B; F42B15/00; F42B15/34; Y; Y10; Y10S; Y10S428/00; Y10S428/902
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
82 words
A thermally insulated rocket motor comprising: a rocket motor including a rocket motor body having an outer surface; and an insulative sleeve member having an inner surface located in thermal contact with said rocket motor body outer surface, said sleeve member comprising: an inner layer of cork having an outer surface; and an outer layer of fiber reinforced polymeric material located on said cork outer surface wherein said outer layer comprises a resin impregnated cloth including fibers having a low thermal conductivity.
Claim 2
Dependent Claim
82 words
A thermally insulated rocket motor comprising: a rocket motor including a rocket motor body having an outer surface; and an insulative sleeve member having an inner surface located in thermal contact with said rocket motor body outer surface, said sleeve member comprising: an inner layer of cork having an outer surface; and an outer layer of fiber reinforced polymeric material located on said cork outer surface wherein said outer layer comprises a resin impregnated cloth including fibers having a low thermal conductivity.
Claim 3
Dependent Claim
17 words
A rocket motor as claimed in claim 1, wherein said polymeric material comprises a chemically cured resin.
Claim 4
Dependent Claim
16 words
A rocket motor as claimed in claim 1, wherein said polymeric material comprises a thermoplastic resin.
Claim 5
Dependent Claim
24 words
A rocket motor as claimed in claim 1, wherein said low conductivity fibers comprise at least one of glass, silica, polyaramid, nylon and polyolefin.
Claim 6
Dependent Claim
25 words
A rocket motor as claimed in claim 1, wherein said resin comprises a means for bonding said fiber reinforced layer to said cork outer surface.
Claim 7
Dependent Claim
33 words
A rocket motor as claimed in claim 5, wherein said means for bonding comprises a polymeric material of said fiber reinforced layer being cured in close proximity to said cork layer outer surface.
References Cited (Backward Citations)
US2995011A
Cited
US3947523A
Cited
US3690101A
Cited
US3973397A
Cited
US4458595A
Cited
US4663065A
Cited
US4594945A
Cited
US4632865A
Cited
US4911795A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-08-12 | 1995-02-11 | 1995-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-12 | 1999-02-11 | 1999-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-12 | 2003-02-11 | 2003-08-13 | $7700.00 | Window Closed / Lapsed |