US4172598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing methods
Assignee: Goricon Metallurgical Services Ltd
•
Filing: 1976-06-28
•
Granted: 1979-10-30
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Expires: 1996-06-28
Abstract
Abstract Doors and other closure members for apertures of high temperature plant e.g. coke ovens, are sealed by a heat-resistant putty, conveniently a clay-based putty, applied in a tubular skin, e.g. of polyethylene. On closing the aperture the skin deforms and bursts to distribute the putty to the mating surfaces.
Inventors
- 👤 Desmond C. M. Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:44
CPC Classifications
C; C10; C10B; C10B25/00; C10B25/02; C10B25/16; F; F16; F16J; F16J15/00; F16J15/02; F16J15/14; F27; F27D; F27D1/00; F27D1/18; Y; Y10; Y10S; Y10S277/00; Y10S277/917
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
98 words
A method of sealing around a movable closure member fitted to an aperture of an installation having a high operating temperature to prevent gaseous leakage between the mating surfaces of te movable member and the aperture, which method comprises taking a sealing strip formed of a water-permeable coherent tubular plastics film material rupturable in use, and a fire clay-based material, which is spreadable when moistened, contained within the plastics film, soaking the sealing strip in water thereby moistening the fire clay-based material, and inserting the soaked strip between the mating surfaces and rupturing said film between said surfaces.
Claim 2
Independent Claim
98 words
A method of sealing around a movable closure member fitted to an aperture of an installation having a high operating temperature to prevent gaseous leakage between the mating surfaces of te movable member and the aperture, which method comprises taking a sealing strip formed of a water-permeable coherent tubular plastics film material rupturable in use, and a fire clay-based material, which is spreadable when moistened, contained within the plastics film, soaking the sealing strip in water thereby moistening the fire clay-based material, and inserting the soaked strip between the mating surfaces and rupturing said film between said surfaces.
Claim 3
Dependent Claim
13 words
The method according to claim 1 wherein the mating surfaces are substantially vertical.
Claim 4
Dependent Claim
14 words
A method according to claim 1 in which the installation is a coke oven.
Claim 5
Dependent Claim
14 words
A method according to claim 1 in which the closure member is a door.
Claim 6
Dependent Claim
28 words
A method according to claim 1 in which the film material is formed from tubing of a material selected from the group consisting of polyethylene and polyvinyl chloride.
Claim 7
Dependent Claim
17 words
A method according to claim 1 in which the fire clay-based material is formed of moist clay.
Claim 8
Dependent Claim
34 words
A method according to claim 1 in which the fire clay-based material is formed from clay and refractory powder and at least one additive selected from the group consisting of calcium chloride and detergents.
Claim 9
Dependent Claim
20 words
The method of claim 1 including spreading said fire clay-based material on said surfaces, thereby sealing spaces between said surfaces.
Claim 10
Dependent Claim
29 words
A method according to claim 8 in which at least a major proportion of said strip is located on said peripheral surface by tensile forces produced therein by gravitation.
Claim 11
Dependent Claim
19 words
A method according to claim 1 in which a tensile resistant member is incorporated within the fire clay-based material.
Claim 12
Dependent Claim
13 words
A method according to claim 10 in which said member is a wire.
Claim 13
Dependent Claim
17 words
A method according to claim 10 in which said member is a cord formed of textile fibres.
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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) | 1982-10-29 | 1983-04-30 | 1983-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-29 | 1987-04-30 | 1987-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-29 | 1991-04-30 | 1991-10-30 | $7700.00 | Window Closed / Lapsed |