US4095937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulation for water cooled pipes in a reheating furnace
Assignee: BP Chemicals Hitco Inc
•
Filing: 1976-11-08
•
Granted: 1978-06-20
•
Expires: 1996-11-08
Abstract
Abstract In a metal reheating furnace, a resilient, vibration resistant and easily installed thermal insulative structure is defined by an inner batt of refractory fibers held in place by an outer wrapping of woven refractory fibers and so arranged as to be self-retaining. This relatively soft, resilient structure supports an outer shell of refractory mortar which adheres to but does not substantially penetrate the woven wrapping, such that vibration and mechanical shock are absorbed in the soft insulation while the exterior layer protects against molten slag and high speed impinging gas flows.
Inventors
- 👤 Steven C. Colburn
- 👤 Marion H. Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:42
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
102 words
Vibration resistant insulation for water cooled members of a skid rail system in a reheating furnace comprising: a plurality of permeable resilient fibrous alumina-silica mat sections wrapped around the water cooled members in abutting relationship and approximately one inch in thickness; a plurality of outer silica fiber sections about said mat sections for holding said mat sections in place around said members, the outer sections comprising chromium-oxide surfaced silica tape; the mat sections and outer sections being resilient, self-supporting and conforming to the configuration of the members; and a layer of non-penetrating refractory mortar outside of and adhering to the silica tape.
Claim 2
Dependent Claim
102 words
Vibration resistant insulation for water cooled members of a skid rail system in a reheating furnace comprising: a plurality of permeable resilient fibrous alumina-silica mat sections wrapped around the water cooled members in abutting relationship and approximately one inch in thickness; a plurality of outer silica fiber sections about said mat sections for holding said mat sections in place around said members, the outer sections comprising chromium-oxide surfaced silica tape; the mat sections and outer sections being resilient, self-supporting and conforming to the configuration of the members; and a layer of non-penetrating refractory mortar outside of and adhering to the silica tape.
Claim 3
Dependent Claim
25 words
The invention as set forth in claim 1, wherein the outer sections are approximately 0.050 inch thick and the mortar is approximately 1/4 inch thick.
Claim 4
Dependent Claim
102 words
Vibration resistant insulation for use with a member to be insulated comprising an inner layer of material of substantially fibrous refractory composition disposed on the outside of and surrounding the member to be insulated, a plurality of outer layers of material of substantially fibrous refractory composition in the form of a tape of continuous fibers disposed on the outside of and generally coextensive with the inner layer, the inner layer and the plurality of outer layers being generally resilient and self-supporting, and a layer of hardened refractory mortar disposed on the outside of and generally coextensive with the plurality of outer layers.
Claim 5
Dependent Claim
102 words
Vibration resistant insulation for use with a member to be insulated comprising an inner layer of material of substantially fibrous refractory composition disposed on the outside of and surrounding the member to be insulated, a plurality of outer layers of material of substantially fibrous refractory composition in the form of a tape of continuous fibers disposed on the outside of and generally coextensive with the inner layer, the inner layer and the plurality of outer layers being generally resilient and self-supporting, and a layer of hardened refractory mortar disposed on the outside of and generally coextensive with the plurality of outer layers.
Claim 6
Dependent Claim
113 words
Vibration resistant insulation for use with a member to be insulated comprising an inner layer of material of substantially fibrous refractory composition disposed on the outside of and surrounding the member to be insulated, a plurality of outer layers of material of substantially fibrous refractory composition in the form of a tape of continuous fibers disposed on the outside of and generally coextensive with the inner layer, and the plurality of outer layers being generally resilient and self-supporting, and a wrap disposed between the inner layer and the plurality of outer layers, the wrap being wound around the outside of the inner layer in spaced-apart loops and being comprised of heat resistant material.
Claim 7
Dependent Claim
113 words
Vibration resistant insulation for use with a member to be insulated comprising an inner layer of material of substantially fibrous refractory composition disposed on the outside of and surrounding the member to be insulated, a plurality of outer layers of material of substantially fibrous refractory composition in the form of a tape of continuous fibers disposed on the outside of and generally coextensive with the inner layer, and the plurality of outer layers being generally resilient and self-supporting, and a wrap disposed between the inner layer and the plurality of outer layers, the wrap being wound around the outside of the inner layer in spaced-apart loops and being comprised of heat resistant material.
Claim 8
Dependent Claim
46 words
The invention as set forth in claim 4, wherein the member to be insulated and the inner layer and the plurality of outer layers are of generally cylindrical configuration and the wrap comprises a tape of generally silica fiber composition helically wrapped around the inner layer.
Claim 9
Dependent Claim
111 words
Vibration resistant insulation for use with a member to be insulated comprising an inner layer of material of substantially fibrous refractory composition disposed on the outside of and surrounding the member to be insulated, a plurality of outer layers of material of substantially fibrous refractory composition in the form of a tape of continuous fibers disposed on the outside of and generally coextensive with the inner layer, the inner layer and the plurality of outer layers being generally resilient and self-supporting, and a plurality of spaced-apart loops of heat resistant material on the outside of and surrounding the outer layers to hold the outer layers in place on the inner layer.
Claim 10
Dependent Claim
111 words
Vibration resistant insulation for use with a member to be insulated comprising an inner layer of material of substantially fibrous refractory composition disposed on the outside of and surrounding the member to be insulated, a plurality of outer layers of material of substantially fibrous refractory composition in the form of a tape of continuous fibers disposed on the outside of and generally coextensive with the inner layer, the inner layer and the plurality of outer layers being generally resilient and self-supporting, and a plurality of spaced-apart loops of heat resistant material on the outside of and surrounding the outer layers to hold the outer layers in place on the inner layer.
Claim 11
Independent Claim
77 words
A method of insulating a water cooled member of a skid rail system in a reheating furnace comprising the steps of: wrapping a permeable resilient mat of fibrous refractory material around the water cooled member in abutting relationship; wrapping a tape of fibrous refractory composition around the mat to cover the mat; applying a layer of non-penetrating refractory mortar on the outside of the tape; and allowing the mortar to harden and form a rigid outer shell.
Claim 12
Independent Claim
77 words
A method of insulating a water cooled member of a skid rail system in a reheating furnace comprising the steps of: wrapping a permeable resilient mat of fibrous refractory material around the water cooled member in abutting relationship; wrapping a tape of fibrous refractory composition around the mat to cover the mat; applying a layer of non-penetrating refractory mortar on the outside of the tape; and allowing the mortar to harden and form a rigid outer shell.
Claim 13
Independent Claim
75 words
A method of insulating a water cooled member of a skid rail system in a reheating furnace comprisng the steps of; wrapping a permeable resilient mat of fibrous refractory material around the water cooled member in abutting relationship; wrapping a tape of fibrous refractory composition around the mat to cover the mat; and helically winding a strip of heat resistant material around the outside of the mat prior to wrapping the tape around the mat.
Claim 14
Independent Claim
75 words
A method of insulating a water cooled member of a skid rail system in a reheating furnace comprisng the steps of; wrapping a permeable resilient mat of fibrous refractory material around the water cooled member in abutting relationship; wrapping a tape of fibrous refractory composition around the mat to cover the mat; and helically winding a strip of heat resistant material around the outside of the mat prior to wrapping the tape around the mat.
Claim 15
Independent Claim
76 words
A method of insulating a water cooled member of a skid rail system in a reheating furnace comprising the steps of: wrapping a permeable resilient mat of fibrous refractory material around the water cooled member in abutting relationship; wrapping a tape of fibrous refractory composition around the mat to cover the mat; and tying a plurality of strips of heat resistant material around the outside of the tape to form a plurality of spaced-apart loops thereon.
Claim 16
Independent Claim
76 words
A method of insulating a water cooled member of a skid rail system in a reheating furnace comprising the steps of: wrapping a permeable resilient mat of fibrous refractory material around the water cooled member in abutting relationship; wrapping a tape of fibrous refractory composition around the mat to cover the mat; and tying a plurality of strips of heat resistant material around the outside of the tape to form a plurality of spaced-apart loops thereon.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |