US3913290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire insulation edge reinforcements for structural members
Assignee: Avco Corp
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Filing: 1974-06-13
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Granted: 1975-10-21
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Expires: 1994-06-13
Abstract
Abstract Fire insulation reinforcements protect structural members from exceedingly high temperatures during fires. The reinforcements are supported on the flange sections of structural members as well as flat surfaces to effectively hold the fireproofing coating in place during fires so as to better insulate the flat surfaces and outer edges from damage during fires.
Inventors
- 👤 Rudolph W Billing
- 👤 George K Castle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:14
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: 8
Claim 1
Independent Claim
141 words
In combination with a structural member having flange portions terminating in an edge susceptible of receiving heat from three directions, a fire insulation structure comprising: insulation means secured in an abutting relationship to said edge, the insulation means having thickness equal to the thickness of said edge and a depth greater than the thickness of said edge; and a mesh means around the periphery of said insulation means, said mesh means having leg portions extending beyond the insulation means, said leg portions being engageable with the flange portions of the structural member to secure said insulation means in an abutting relationship with the edge of the flange wherein a fireproof coating is applied over the entire structural member and mesh means thereby substantially reducing the amount of heat flow directed to the end and edges of the flange during fire conditions.
Claim 2
Dependent Claim
141 words
In combination with a structural member having flange portions terminating in an edge susceptible of receiving heat from three directions, a fire insulation structure comprising: insulation means secured in an abutting relationship to said edge, the insulation means having thickness equal to the thickness of said edge and a depth greater than the thickness of said edge; and a mesh means around the periphery of said insulation means, said mesh means having leg portions extending beyond the insulation means, said leg portions being engageable with the flange portions of the structural member to secure said insulation means in an abutting relationship with the edge of the flange wherein a fireproof coating is applied over the entire structural member and mesh means thereby substantially reducing the amount of heat flow directed to the end and edges of the flange during fire conditions.
Claim 3
Dependent Claim
35 words
The structure set forth in claim 1 in which said mesh means is a wire mesh wherein said wire mesh holds the fireproofing coating together all around the edge and flange as the coating decomposes.
Claim 4
Dependent Claim
37 words
The structure as set forth in claim 2 further comprising an edge member secured to the exterior of said wire mesh and insulation means so as to prOvide an easily fireproofable edge surface for the structural member.
Claim 5
Dependent Claim
25 words
The structure defined in claim 2 wherein said structural member includes a flange terminating in said end and edge to which the insulation is secured.
Claim 6
Dependent Claim
36 words
The structure as set forth in claim 4 in which the leg portions of said wire mesh frictionally engage opposite surfaces of the portions flange thereby holding said insulation means in place against the flange edge.
Claim 7
Dependent Claim
88 words
In a combination with a structural member having an end terminating in an edge susceptible of receiving heat from three directions, and having a fireproof coating over its entire surface, a fire insulation structure comprising: insulation means interposed between the fireproof coating and said edge in an abutting relationship to said edge, the insulation means having a thickness equal to the thickness of said edge, and a depth greater than the thickness of said edge, wherein said insulation reducing the amount of heat flow directed to said edge.
Claim 8
Dependent Claim
88 words
In a combination with a structural member having an end terminating in an edge susceptible of receiving heat from three directions, and having a fireproof coating over its entire surface, a fire insulation structure comprising: insulation means interposed between the fireproof coating and said edge in an abutting relationship to said edge, the insulation means having a thickness equal to the thickness of said edge, and a depth greater than the thickness of said edge, wherein said insulation reducing the amount of heat flow directed to said edge.
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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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |