Patent US3664904A successfully refreshed from Google Patents.
US3664904A
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US
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Self-sealing structure for use as a fluid barrier in containers
Assignee: Marshall Industries
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Filing: 1970-03-04
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Granted: 1972-05-23
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Expires: 1990-03-04
Abstract
Abstract A self-sealing structure adapted for use in a container or the like as a fluid barrier. The structure comprises sealant material adapted to swell in the presence of certain fluids and is interposed between inner and outer layers, at least one of the layers being resiliently expansible to accommodate such swelling. Tension means extending between the layers limit the amount of expansion. In one embodiment the inner layer is pervious to the contained fluid, and the contained fluid is one which swells the sealant material. The swelled sealant material and the resilient layer or layers develop an internal pressure which tends to urge the sealant material toward any puncture of the structure. In another embodiment, the sealant material is caused to swell by exposure thereof to a swelling agent other than the contained fluid.
Inventors
- 👤 Richard L Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:46
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B32B25/00; B32B25/10; B32B25/16; B32B25/18; B32B27/00; B32B27/30; B32B27/306; B32B27/308; B32B27/32; B32B27/34; B64; B64D; B64D37/00; B64D37/02; B64D37/06; B32B2250/00; B32B2250/40; B32B2255/00; B32B2255/02; B32B2255/26; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/023; B32B2260/04; B32B2260/048; B32B2262/00; B32B2262/02; B32B2262/0261; B32B2274/00; B32B2307/00; B32B2307/50; B32B2307/56; B32B2307/70; B32B2307/728; B32B2307/762; B32B2435/00; B32B2435/02; B32B2439/00; B32B2439/40; B32B2571/00; B32B2597/00; B32B2605/00; B32B2605/18; Y; Y10; Y10S; Y10S220/00; Y10S220/901; Y10S220/905; Y10S428/00; Y10S428/912; Y10T; Y10T428/00; Y10T428/24; Y10T428/24033; Y10T428/24479; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31667; Y10T428/31786; Y10T428/31797; Y10T428/31826; Y10T428/31833; Y10T428/31855; Y10T428/31931; Y10T428/31935; Y10T442/00; Y10T442/60; Y10T442/674
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
44 words
Self-sealing structure according to claim 1 wherein said inner layer constitutes said one of said layers which is resiliently flexible, and wherein said stitches are laterally spaced apart to allow said inner layer to bulge outwardly of said self-sealing material and between said stitches.
Claim 2
Dependent Claim
14 words
Self-sealing structure according to claim 1 wherein said inner layer is pervious to fluid.
Claim 3
Dependent Claim
20 words
Self-sealing structure according to claim 3 wherein said self-sealing material is adapted to swell in the presence of hydrocarbon fuel.
Claim 4
Dependent Claim
15 words
Self-sealing structure according to claim 4 wherein said self-sealing material includes a gum latex composition.
Claim 5
Dependent Claim
42 words
Self-sealing structure according to claim 1 wherein both said inner and outer layers are resiliently flexible and substantially equal in strength and resilience whereby said wall structure is resistant to unbalanced curling and bending thereof on said swelling of said self-sealing material.
Claim 6
Dependent Claim
20 words
Self-sealing structure according to claim 1 wherein said inner layer is pervious to fluid and impervious to said self-sealing material.
Claim 7
Dependent Claim
14 words
Self-sealing structure according to claim 1 wherein said inner layer is impervious to fluid.
Claim 8
Dependent Claim
40 words
Self-sealing structure according to claim 1 wherein said self-sealing material comprises a polymerizable material having relatively low viscosity in an uncatalyzed state and a catalyst comprising a swelling agent operative to polymerize said polymerizable material to a flowable, gum-like state.
Claim 9
Dependent Claim
14 words
Self-sealing structure according to claim 9 wherein said inner layer is impervious to fluid.
Claim 10
Dependent Claim
20 words
Self-sealing structure according to claim 9 wherein said self-sealing material includes dimethyl silicone rubber and said catalyst includes chloroplatinic acid.
Claim 11
Dependent Claim
25 words
Self-sealing structure according to claim 7 wherein said self-sealing material is characterized by a capacity to swell in the presence of fluids having swellable properties.
Claim 12
Dependent Claim
20 words
Self-sealing structure according to claim 7 wherein said self-sealing material includes a material which swells in the presence of water.
Claim 13
Dependent Claim
14 words
Self-sealing structure according to claim 13 wherein said self-sealing material includes a polyvinyl alcohol.
Claim 14
Dependent Claim
14 words
Self-sealing structure according to claim 13 wherein said self-sealing material includes hydroxy ethyl cellulose.
Claim 15
Dependent Claim
14 words
Self-sealing structure according to claim 13 wherein said self-sealing material includes an acqueous gum.
Claim 16
Dependent Claim
14 words
Self-sealing structure according to claim 7 wherein said self-sealing material includes plasticized polyvinyl chloride.
Claim 17
Dependent Claim
13 words
Self-sealing structure according to claim 7 wherein said self-sealing material includes butyl acrylate.
Claim 18
Dependent Claim
87 words
A laminated wall structure used as a liner for a container for a hydrocarbon liquid, said structure comprising: a resilient inner layer pervious to hydrocarbon liquid; an outer layer impervious to hydrocarbon liquid; a self-sealing material located between said inner and outer layers and having a swelled state responsive to the presence of hydrocarbon liquid; and quilt stitching extending between said inner and outer layers and limiting the degree of resilient movement of said inner layer and thereby to effect self-sealing upon swelling of said self-sealing material.
Claim 19
Dependent Claim
16 words
A wall structure according to claim 19 wherein said self-sealing material includes a gum latex composition.
Claim 20
Dependent Claim
15 words
A wall structure according to claim 19 wherein said self-sealing material includes uncured butyl rubber.
Claim 21
Dependent Claim
14 words
A wall structure according to claim 19 wherein said self-sealing material includes polybutadiene rubber.
Claim 22
Dependent Claim
15 words
A wall structure according to claim 19 wherein said self-sealing material includes ethylene propylene rubber.
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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) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |