US3804585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precast furnace pipe insulation
Assignee: Bloom Engineering Co Inc
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Filing: 1973-07-02
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Granted: 1974-04-16
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Expires: 1993-07-02
Abstract
Abstract A refractory insulative member for protecting elongate pipes in a furnace comprises a hollow refractory element into which is solidly embedded a reticulated metal structure. Openings in the refractory element at the longitudinal edges thereof expose portions of a wire rod which can be welded to the pipe to support the member. The wire rods have portions solidly embedded in the refractory element which portions are mechanically linked to the reticulated metal structure.
Inventors
- 👤 T Twort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:27
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/02; F16L59/021; F16L59/024; F16L59/12; F27; F27D; F27D3/00; F27D3/02; F27D3/022
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
146 words
A refractory insulative member for application to the outer surface of an elongate pipe in a furnace to protect the pipe from the effects of furnace heat, said member comprising a body of refractory insulating material having an inner face; a reticulated metal reinforcing structure wholly embedded within said body; at least one metal rod partially embedded in the refractory material and having a plurality of spaced portions wholly embedded in the refractory material and connected to the reticulated metal structure; a plurality of other portions radially offset with respect to said wholly embedded portions and substantially flush with the inner face; and a plurality of spaced openings in said refractory insulating material, each of said spaced openings exposing a respective said offset rod portion to permit of said offset rod portions being welded to the underlying pipe for anchoring the insulative member to the pipe.
Claim 2
Dependent Claim
146 words
A refractory insulative member for application to the outer surface of an elongate pipe in a furnace to protect the pipe from the effects of furnace heat, said member comprising a body of refractory insulating material having an inner face; a reticulated metal reinforcing structure wholly embedded within said body; at least one metal rod partially embedded in the refractory material and having a plurality of spaced portions wholly embedded in the refractory material and connected to the reticulated metal structure; a plurality of other portions radially offset with respect to said wholly embedded portions and substantially flush with the inner face; and a plurality of spaced openings in said refractory insulating material, each of said spaced openings exposing a respective said offset rod portion to permit of said offset rod portions being welded to the underlying pipe for anchoring the insulative member to the pipe.
Claim 3
Dependent Claim
38 words
A refractory insulative member according to claim 1, wherein said reticulated metal structure includes wire loop portions and said wholly embedded rod portions are connected to the reticulated metal structure by passing them through said wire loop portions.
Claim 4
Dependent Claim
22 words
A refractory insulative member according to claim 2, wherein said metal rod is thicker than the wire comprising said wire loop portions.
Claim 5
Dependent Claim
24 words
A refractory insulative member according to claim 2, wherein said spaced openings are positioned along at least one longitudinal edge of the insulative member.
Claim 6
Dependent Claim
19 words
A refractory insulative member according to claim 4, wherein said openings are regularly spaced longitudinally of the insulative member.
Claim 7
Dependent Claim
44 words
A refractory insulative member according to claim 5, wherein each said opening is tapered so that its cross-sectional area is greater adjacent the inner face of the member opposed to the outer surface of the pipe than adjacent the outer face of the member.
Claim 8
Dependent Claim
62 words
A refractory insulative member according to claim 2, wherein for application to a pipe having a skid bar said member is constructed of two hingedly connected integral parts and each said part possesses a longitudinal edge provided with a said plurality of spaced openings and exposed offset rod portions for welding to the pipe adjacent a respective side of the skid bar.
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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) | 1977-04-15 | 1977-10-15 | 1978-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-15 | 1981-10-15 | 1982-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-15 | 1985-10-15 | 1986-04-16 | $7700.00 | Window Closed / Lapsed |