Patent US4137351A successfully refreshed from Google Patents.
US4137351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filament/epoxy camouflage launch tubes
Assignee: United States Department of the Army
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Filing: 1978-04-03
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Granted: 1979-01-30
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Expires: 1998-04-03
Abstract
Abstract Filament/epoxy camouflage launch tubes in which the launch tubes are fabrted using conventional filament winding processes and materials and in which each tube is bonded together with an epoxy resin system in which the epoxy resin system includes coloring agents for coloring the launch tubes in a camouflage color that colors the launch tube through and through. The exact color of the launch tube can be varied by varying the amount of the coloring agent.
Inventors
- 👤 Glen A. Clodfelter
- 👤 Ocke C. Fruchtnicht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:59
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4215; F; F41; F41A; F41A21/00; F41A21/20; F41H; F41H3/00; Y; Y10; Y10S; Y10S428/00; Y10S428/919; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1314; Y10T428/24; Y10T428/24058; Y10T428/24124; Y10T428/24802; Y10T428/2481; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2936; Y10T428/31504; Y10T428/31511; Y10T428/31529
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
64 words
A cured camouflage launch tube comprising a wound glass fiber structure that is secured together with an epoxy resin system and with coloring agents in the epoxy resin system to color the launch tube the same camouflage color throughout the entire wall thickness, said coloring agents being carbon black and yellow iron oxide and possesses thermal and color stability under the resin curing conditions.
Claim 2
Dependent Claim
64 words
A cured camouflage launch tube comprising a wound glass fiber structure that is secured together with an epoxy resin system and with coloring agents in the epoxy resin system to color the launch tube the same camouflage color throughout the entire wall thickness, said coloring agents being carbon black and yellow iron oxide and possesses thermal and color stability under the resin curing conditions.
Claim 3
Dependent Claim
28 words
A camouflage launch tube as set forth in claim 1, wherein said coloring agents comprise between about 0.5 and about 2 weight percent of said epoxy resin system.
Claim 4
Dependent Claim
66 words
A camouflage launch tube as set forth in claim 2, wherein said epoxy resin system consists of about 800 parts by weight of an epoxy resin, about 720 parts by weight of a hardener, about 8 parts by weight of an accelerator, about 11 parts by weight of the coloring agent yellow iron oxide and about 1 part by weight of the coloring agent carbon black.
Claim 5
Dependent Claim
33 words
A camouflage launch tube as set forth in claim 3, wherein said epoxy resin is diglycidyl ether of bisphenyl A, wherein said hardener is methylbicyclo-[2.21]heptene-2,3-dicorboxylic anhydride isomers and wherein said accelerator is N,N-dimethylbenezylamine.
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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) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |