Patent US4069075A successfully refreshed from Google Patents.
US4069075A
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US
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Structural support for char derived from intumescent coatings
Assignee: Avco Corp
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Filing: 1975-01-27
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Granted: 1978-01-17
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Expires: 1995-01-27
Abstract
Abstract Intumescent coatings protect structural members from exceedingly high temperatures during fires. Most intumescents, in their virgin condition, can be made to bond tenaciously to the substrate surface it is to protect. When activated by a fire, intumescent materials swell and undergo chemical degradation, and in the process a char is produced. The char insulates the substrate from the heat flux (fire). A reticulated structure is provided to anchor the char to the substrate.
Inventors
- 👤 Rudolph W. Billing
- 👤 George K. Castle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:27
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/94; E04B1/941; E04B1/943; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/24999; Y10T428/31504; Y10T428/31678; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/109; Y10T442/20; Y10T442/2631; Y10T442/2648
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
82 words
A method of producing a structural support for the char residue derived from a char-forming intumescent coating on structural members comprising the steps of: mounting a fire resistant mesh member on the surface of the structural member; and applying a self-adhering char-forming intumescent coating on the surface of the structural member so as to substantially encapsulate the entire mesh member and thereby anchoring to the surface the char residue formed when the intumescent coating is fully activated and reacted by a fire.
Claim 2
Independent Claim
82 words
A method of producing a structural support for the char residue derived from a char-forming intumescent coating on structural members comprising the steps of: mounting a fire resistant mesh member on the surface of the structural member; and applying a self-adhering char-forming intumescent coating on the surface of the structural member so as to substantially encapsulate the entire mesh member and thereby anchoring to the surface the char residue formed when the intumescent coating is fully activated and reacted by a fire.
Claim 3
Dependent Claim
32 words
A method of producing a structural support for the char residue derived from a char-forming intumescent coating on structural members as described in claim 1 where the mesh is a wire mesh.
References Cited (Backward Citations)
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US3320087A
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GB1084503A
Cited
US3364097A
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US3543460A
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US3591437A
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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) | 1981-01-16 | 1981-07-18 | 1982-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-16 | 1985-07-18 | 1986-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-16 | 1989-07-18 | 1990-01-17 | $7700.00 | Window Closed / Lapsed |