Patent US3742670A successfully refreshed from Google Patents.
US3742670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protector for high temperature furnace insulation supports
Assignee: Unifrax I LLC
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Filing: 1971-08-23
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Granted: 1973-07-03
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Expires: 1991-08-23
Abstract
Abstract An insulating construction system for high temperature applications comprising a structural supporting member in refractory insulating bodies arranged to protect the supporting member at the points where it is exposed to high temperatures. The refractory insulating body acts to increase the useful life of the supporting member and allows greater latitude in the choice of materials for the member, resulting in greater ease of construction and increased efficiency of operation during the use of the member in high temperature applications.
Inventors
- 👤 C Byrd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:36
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/78; F02K1/82; F02K1/822; F02K1/80; F16; F16L; F16L59/00; F16L59/12; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
131 words
A high temperature insulation construction for direct exposure to high temperature environments comprising: (a) a structural supporting member, (b) a body of insulating material superimposed over the structural supporting member, (c) said body of insulating material being secured to the structural supporting member by means of a plurality of spaced apart studs of metallic composition passing through the body of insulating material with the first end of the stud secured to the structural supporting member and the second end extending through and protruding from the surface of the body of insulating material, the studs having fastening means for holding the body of insulating material, and (d) a separate refractory protector comprising a cup-like fired refractory shape formed to encircle the second end of the stud and partially enclose the fastening means.
Claim 2
Dependent Claim
131 words
A high temperature insulation construction for direct exposure to high temperature environments comprising: (a) a structural supporting member, (b) a body of insulating material superimposed over the structural supporting member, (c) said body of insulating material being secured to the structural supporting member by means of a plurality of spaced apart studs of metallic composition passing through the body of insulating material with the first end of the stud secured to the structural supporting member and the second end extending through and protruding from the surface of the body of insulating material, the studs having fastening means for holding the body of insulating material, and (d) a separate refractory protector comprising a cup-like fired refractory shape formed to encircle the second end of the stud and partially enclose the fastening means.
Claim 3
Dependent Claim
35 words
A high temperature insulation construction according to claim 1, in which the said fastening means comprises a metallic washer and holding nut, said nut engaging cooperating threads formed on the second end of said stud.
Claim 4
Dependent Claim
53 words
A high temperature insulation construction according to claim 1, in which the said fastening means comprises a ceramic cap with a threaded metalic insert firmly bonded therein, said threaded insert engaging cooperating threads formed on the second end of said stud, whereby the said fastening means is protected by the said ceramic cap.
Claim 5
Dependent Claim
52 words
A high temperature insulation construction according to claim 1, in which the said fastening means comprises a metallic washer having a central opening, said washer engaging cooperating grooves formed on the second end of said stud, and a refractory protector applied around said fastening means for protection during exposure to high temperature.
Claim 6
Dependent Claim
30 words
A high temperature insulation construction according to claim 1, in which said refractory shape is filled with a castable refractory composition which completely covers and protects the said fastening means.
Claim 7
Dependent Claim
24 words
A high temperature insulation construction according to claim 1, in which said refractory shape is formed from a fired mixture comprising aluminum silicate fibers.
Claim 8
Dependent Claim
20 words
A high temperature insulation construction according to claim 3, in which the ceramic cap is formed from a castable refractory.
Claim 9
Dependent Claim
23 words
A high temperature insulation construction according to claim 3, in which the castable refractory is formed from a mixture comprising aluminum silicate fibers.
Claim 10
Dependent Claim
57 words
A high temperature insulation construction according to claim 4, in which the refractory protector comprises a cup-like refractory member shaped to fit on said stud beneath the said fastening means, said protector having a flanged rim for frictionally engaging a second refractory disc, said second disc covering said shoulder means for protection during exposure to high temperature.
Claim 11
Dependent Claim
53 words
A high temperature insulating construction according to claim 4, in which the second end of said stud has at least one radial hole formed therein, said stud acting in conjunction with a cotter pin inserted in the hole to hold the metallic washer and refractory protector in position on the said fastening means.
Claim 12
Dependent Claim
23 words
A high temperature insulation construction according to claim 9, in which both refractory members are formed from a mixture comprising aluminum silicate fibers.
References Cited (Backward Citations)
US2341777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |