US3801425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-sealing container
Assignee: Lockheed Martin Tactical Systems Inc
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Filing: 1971-03-22
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Granted: 1974-04-02
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Expires: 1991-03-22
Abstract
Abstract A fuel container which pertains more particularly to lightweight fuel containers such as the gasoline and jet fuel cells employed in aircraft and which are self-sealing when punctured by missiles, the container comprising an elastomeric laminate having a sealant composition positioned in said laminate to effect sealing on contact with the fuel. The sealant composition is characterized as containing at least one fuel insoluble polymer dispersed in a solvent for said polymer, said solvent being pourable over a range of - 65* F. to 300* F. and being miscible with the fuel at a temperature range of -65* F. to 300* F. to effect coagulation or precipitation of the fuel insoluble polymer from said composition.
Inventors
- 👤 R Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:56
CPC Classifications
B; B32; B32B; B32B25/00; B32B25/10; B29; B29C; B29C73/00; B29C73/16; B29C73/18; B29C73/20; B32B1/00; B32B23/00; B32B23/04; B32B23/046; B32B23/10; B64; B64D; B64D37/00; B64D37/02; B64D37/06; B65; B65D; B65D90/00; B65D90/22; B65D90/24; B32B2439/00; Y; Y10; Y10S; Y10S220/00; Y10S220/90; Y10S428/00; Y10S428/912; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1362; Y10T428/1366
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
23 words
The container of claim 1 wherein the polymer is a polyalkyl acrylate with the alkyl radical containing from 1 to 18 carbon atoms.
Claim 2
Dependent Claim
18 words
The container of claim 1 wherein the sealant is a mixture of alkylbenzene, plasticizer and a rubbery polymer.
Claim 3
Dependent Claim
23 words
The container of claim 3 wherein the polymer is a polyalkyl acrylate having an alkyl radical having from 1 to 18 carbon atoms.
Claim 4
Dependent Claim
10 words
The container of claim 4 wherein the polymer is polymethacrylate.
Claim 5
Dependent Claim
57 words
The container of claim 5 wherein the solvent for the sealant is diisopropyl benzene and the plasticizer is an alkyl phthalate having an alkyl radical containing from 2 to 20 carbon atoms and wherein the sealant is a mixture of 93 to 80 percent diisopropyl benzene, 2 to 10 percent dibutylphthalate and 5 to 10 percent polymethacrylate.
Claim 6
Dependent Claim
78 words
The container in claim 1 wherein the sealant is fluid mixture flowable over a temperature range of -65* F. to 300* F. composed of a solvent having a boiling point of at least 300* F. and complete miscibility with a hydrocarbon fuel, a polymer soluble in the solvent over the range of -65* F. to 300* F. but only slightly soluble to insoluble in hydrocarbon fuel at -65* F. to 300* F. and a plasticizer for said polymer.
Claim 7
Dependent Claim
40 words
The container of claim 7 wherein the solvent is an alkyl benzene having an alkyl radical of 1 to 20 carbon atoms, and the polymer is a polyalkyl acrylate having an alkyl radical containing from 1 to 18 carbon atoms.
Claim 8
Dependent Claim
20 words
The container of claim 7 wherein the solvent is diisopropyl benzene, the polymer is polymethacrylate and the plasticizer is dibutylphthalate.
Claim 9
Dependent Claim
26 words
The container of claim 7 wherein the mixture contains 0.5 to about 10 percent of a fuel soluble polymer in addition to the fuel insoluble polymer.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |