Patent US4122644A successfully refreshed from Google Patents.
US4122644A
Expired / Lapsed
US
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Heat-insulating fibrous panels
Assignee: Refractory Products Co
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Filing: 1977-01-31
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Granted: 1978-10-31
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Expires: 1997-01-31
Abstract
Abstract A heat-insulating panel is made by disposing a metal supporting member adjacent a felting screen to lay down a wet refractory fiber mat from an aqueous, refractory fiber-colloidal silica mixture about the metal member. The member has a central base section and a pair of wings extending in opposite directions from opposite edges of the central section, with the wings being disposed at an angle of between about 130° and about 80° to each other and each containing a plurality of holes. After drying, the member is embedded within the mat with individual fibers extending through the holes and firmly anchoring the member. The member is located adjacent the rear surface of the heat-insulating panel, and its central section contains an aperture through which a support rod is passed to mount the panel.
Inventors
- 👤 Richard K. Woodruff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:18
CPC Classifications
E; E04; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/0801; E04F13/0832; E04F13/0833; E04F13/0835; B; B22; B22D; B22D7/00; B22D7/06; B22D7/10; B22D7/102; E04F13/16; F; F27; F27D; F27D1/00; F27D1/0003; F27D1/0006; F27D1/0009
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
117 words
A heat insulating panel having a front surface for placement facing the heat source and an opposite rear surface, which panel comprises a refractory fiber mat formed of discrete refractory fibers bonded together by an inorganic bonding agent, and a metal supporting member embedded within said fiber mat, which member includes a central base section and a pair of wing sections extending in opposite directions from said central section and being disposed at an angle of between about 25° and about 50° to said rear surface, said wing sections each containing a plurality of holes so that said individual fibers extend through said holes and thus firmly anchor said member as an integral part of said mat.
Claim 2
Dependent Claim
117 words
A heat insulating panel having a front surface for placement facing the heat source and an opposite rear surface, which panel comprises a refractory fiber mat formed of discrete refractory fibers bonded together by an inorganic bonding agent, and a metal supporting member embedded within said fiber mat, which member includes a central base section and a pair of wing sections extending in opposite directions from said central section and being disposed at an angle of between about 25° and about 50° to said rear surface, said wing sections each containing a plurality of holes so that said individual fibers extend through said holes and thus firmly anchor said member as an integral part of said mat.
Claim 3
Dependent Claim
33 words
A panel in accordance with claim 1 wherein a cavity is provided extending from the front surfact of the panel to said central base section through cavity which a fastener can be inserted.
Claim 4
Dependent Claim
25 words
A panel in accordance with claim 1 wherein said central section is generally planar and is disposed closely adjacent the rear surface of the panel.
Claim 5
Dependent Claim
22 words
A panel in accordance with claim 1 wherein said central section contains an aperture through which a support rod can be passed.
Claim 6
Dependent Claim
22 words
A panel in accordance with claim 4 wherein a threaded nut is affixed to said central section in alignment with said aperture.
Claim 7
Dependent Claim
27 words
A panel in accordance with claim 1 wherein said supporting member is formed of expanded metal having holes measuring between about one-half inch and about 1 inch.
References Cited (Backward Citations)
US2009615A
Cited
US1959083A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-30 | 1982-05-01 | 1982-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-30 | 1986-05-01 | 1986-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-30 | 1990-05-01 | 1990-10-31 | $7700.00 | Window Closed / Lapsed |