Patent US4265953A successfully refreshed from Google Patents.
US4265953A
Expired / Lapsed
US
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Intumescent stressed skin composite material
Assignee: 3M Co
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Filing: 1979-03-07
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Granted: 1981-05-05
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Expires: 1999-03-07
Abstract
Abstract A composite or tape comprising a thin, flexible, compliant, strong, stressable substrate, a layer of flexible, resilient intumescent material adhered to the substrate and adhesive means for closing the substrate on itself. The composite or tape can be applied to a rigid body, the adhesive means applied and the intumescent material exfoliated to provide insulation enclosed by the substrate which becomes a stressed skin.
Inventors
- 👤 James R. Close
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:46
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/14; C; C09; C09J; C09J7/00; C09J7/20; E; E04; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/94; F16; F16L; F16L59/00; F16L59/02; F16L59/027; C09J2301/00; C09J2301/20; C09J2301/204; C09J2400/00; C09J2400/10; C09J2400/14; C09J2400/143; C09J2400/16; C09J2400/163; C09J2400/20; C09J2400/26; C09J2400/263; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/92; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/24999; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/2848; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
122 words
A self-securing composite insulating wrapping comprising a first web of a thin, flexible, compliant, stressable material having a tensile strength of at least 1.75 kg/cm 2 , an adhesive substantially covering one face of said web and a second smaller web of resilient intumescent sheet material positioned and adhered to the adhesive covered surface of said web of flexible material with the long dimensions of the two webs parallel with the adhesive coated surface of said first web exposed along at least one edge of said second web, said wrapping when applied onto a base material being capable of exfoliation by thermal or chemical means to provide a thermal insulating layer on said base material overcoated by a protective stressed outer skin.
Claim 2
Dependent Claim
122 words
A self-securing composite insulating wrapping comprising a first web of a thin, flexible, compliant, stressable material having a tensile strength of at least 1.75 kg/cm 2 , an adhesive substantially covering one face of said web and a second smaller web of resilient intumescent sheet material positioned and adhered to the adhesive covered surface of said web of flexible material with the long dimensions of the two webs parallel with the adhesive coated surface of said first web exposed along at least one edge of said second web, said wrapping when applied onto a base material being capable of exfoliation by thermal or chemical means to provide a thermal insulating layer on said base material overcoated by a protective stressed outer skin.
Claim 3
Dependent Claim
20 words
A self-securing composite insulating wrapping according to claim 1 wherein said first web comprises metal foils or thin metal sheets.
Claim 4
Dependent Claim
19 words
A self-securing composite insulating wrapping according to claim 2 wherein said first web is a thin sheet of aluminum.
Claim 5
Dependent Claim
18 words
A self-securing composite insulating wrapping according to claim 1 wherein said first web is a woven glass fabric.
Claim 6
Dependent Claim
21 words
A self-securing composite insulating wrapping according to claim 2 wherein said second smaller web comprises an intumescent component and a binder.
Claim 7
Dependent Claim
19 words
A self-securing composite insulating wrapping according to claim 5 wherein said intumescent component is a hydrated alkali metal silicate.
Claim 8
Dependent Claim
16 words
A self-securing composite insulating wrapping according to claim 5 wherein said intumescent component is unexpanded vermiculite.
Claim 9
Dependent Claim
28 words
A self-securing composite insulating wrapping according to claim 2 having a third web of ablation-resistant material adhered to and covering at least a portion of the second web.
Claim 10
Dependent Claim
19 words
A self-securing composite insulating wrapping according to claim 1 wherein said first web comprises fabric of thermally resistant fibers.
Claim 11
Dependent Claim
18 words
A self-securing composite insulating wrapping according to claim 1 wherein said first web comprises a metal wire mesh.
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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) | 1984-05-04 | 1984-11-03 | 1985-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-04 | 1988-11-03 | 1989-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-04 | 1992-11-03 | 1993-05-05 | $7700.00 | Window Closed / Lapsed |