Patent US4172598A successfully refreshed from Google Patents.
US4172598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing methods
Assignee: Goricon Metallurgical Services Ltd
•
Filing: 1976-06-28
•
Granted: 1979-10-30
•
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 21:00
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.
References Cited (Backward Citations)
US1143411A
Cited
US1987120A
Cited
US2040887A
Cited
US2240744A
Cited
US2662053A
Cited
US2664838A
Cited
US2855347A
Cited
US2900265A
Cited
US3061895A
Cited
US3429973A
Cited
GB1161109A
Cited
US3900369A
Cited
US3904213A
Cited
US3909010A
Cited
US3923311A
Cited
US3877675A
Cited
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 |