US4015636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic refractory covering members
Assignee: Babcock and Wilcox Co
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Filing: 1975-12-04
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Granted: 1977-04-05
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Expires: 1995-12-04
Abstract
Abstract An illustrative embodiment of the invention relates to a preburned ceramic refractory covering for a water cooled member forming a structural portion of a metallurgical furnace. The covering comprises an inner layer of split ceramic refractory tiles at least partially encircling the structural member, and a C-shaped ceramic refractory collar which slideably engages the split tiles disposed about the member and supports the tiles thereon.
Inventors
- 👤 Don B. Van Fossen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:30
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/02; F16L59/021; F16L59/022; F16L58/00; F16L58/02; F16L58/04; F16L58/14; F16L9/00; F16L9/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
83 words
A refractory covering for application to a fluid conveying tubular member comprising a thermal insulating layer disposed about and contacting the tubular member, an inner ceramic refractory layer of split tiles disposed about and contacting the insulating layer, and an outer ceramic refractory tile layer forming a unitary collar contacting and extending about a major portion of the outer circumference of the inner tile layer to hold the split tiles together and to completely provide support of the collar by the tubular member.
Claim 2
Dependent Claim
83 words
A refractory covering for application to a fluid conveying tubular member comprising a thermal insulating layer disposed about and contacting the tubular member, an inner ceramic refractory layer of split tiles disposed about and contacting the insulating layer, and an outer ceramic refractory tile layer forming a unitary collar contacting and extending about a major portion of the outer circumference of the inner tile layer to hold the split tiles together and to completely provide support of the collar by the tubular member.
Claim 3
Dependent Claim
18 words
A refractory covering according to claim 1 wherein the collar is formed to slidably engage the split tiles.
Claim 4
Dependent Claim
15 words
A refractory covering according to claim 2 wherein the split tiles are cylindrical C-shaped members.
Claim 5
Dependent Claim
15 words
A refractory covering according to claim 3 wherein the collar is a cylindrical C-shaped member.
Claim 6
Dependent Claim
38 words
A refractory covering according to claim 4 wherein the C-shaped collar provides an open sector having a width greater than the outside diameter of the tubular member and less than the outside diameter of the inner tile layer.
Claim 7
Dependent Claim
19 words
A refractory covering according to claim 5 wherein the collar is formed with opposed pairs of axially spaced arms.
References Cited (Backward Citations)
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US3486533A
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US3537486A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |