US4001475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ablative surface insulator
Assignee: United States Department of the Air Force
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Filing: 1974-05-09
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Granted: 1977-01-04
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Expires: 1994-05-09
Abstract
Abstract An ablative surface insulator having a basket-like open weave of metal strips, convoluted on a one inch pitch and having a spacing of one-half inch between center lines of the strips is attached to a base material to be protected. A suitable elastomeric material which provides thermal protection by pyrolytic charring is molded on the woven metal structure.
Inventors
- 👤 Joseph W. Chambers
- 👤 Lester E. McTaggart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:48
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/97; F02K9/974; B; B32; B32B; B32B33/00; F16; F16L; F16L59/00; F16L59/02; F16L59/028; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24636; Y10T428/24669; Y10T428/24802; Y10T428/24826; Y10T428/24917; Y10T442/00; Y10T442/30; Y10T442/3033; Y10T442/3041
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
107 words
An ablative surface insulation for withstanding extreme temperature comprising a plurality of interwoven strips of metal capable of withstanding temperatures in excess of 700° F fixedly secured to a base material which is incapable of withstanding said extreme temperature, said strips being formed in a convoluted design producing a diagonal matrix having nodes and peaks, said nodes of said strips in one direction matching said peaks in another direction, a silicone elastomeric insulating material molded to and encompassing said plurality of strips and said convoluted strips having a pitch of approximately 1 inch and having an amplitude equal to approximately 0.6 the height of said insulating material.
Claim 2
Dependent Claim
107 words
An ablative surface insulation for withstanding extreme temperature comprising a plurality of interwoven strips of metal capable of withstanding temperatures in excess of 700° F fixedly secured to a base material which is incapable of withstanding said extreme temperature, said strips being formed in a convoluted design producing a diagonal matrix having nodes and peaks, said nodes of said strips in one direction matching said peaks in another direction, a silicone elastomeric insulating material molded to and encompassing said plurality of strips and said convoluted strips having a pitch of approximately 1 inch and having an amplitude equal to approximately 0.6 the height of said insulating material.
Claim 3
Dependent Claim
26 words
An ablative surface insulation as defined in claim 1 wherein said insulating material is capable of leaving a residual char when exposed to said extreme temperature.
Claim 4
Dependent Claim
19 words
An ablative surface insulation as defined in claim 2 wherein said strips of metal are made of stainless steel.
Claim 5
Dependent Claim
21 words
An ablative surface insulation as defined in claim 3 wherein said strips are secured to said base material by spot welding.
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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) | 1980-01-04 | 1980-07-05 | 1981-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-04 | 1984-07-05 | 1985-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-04 | 1988-07-05 | 1989-01-04 | $7700.00 | Window Closed / Lapsed |