US3900369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coal charging cover and seal for the coal charging hole of a coke oven
Assignee: Osaka Gas Co Ltd
•
Filing: 1973-12-10
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Granted: 1975-08-19
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Expires: 1993-12-10
Abstract
Abstract Coal charging cover and seat for the coal charging hole of a coke oven are made substantially wholly of refractories, the coal charging cover being composed of a refractory body and an iron plate positioned on the top portion of the refractory body with which to operate the coal charging cover by an electromagnetic device and the coal charging seat being composed of one or more parts with the parts secured with each other. The coal charging cover and seat have excellent properties in durability, resistance to heat, deterioration, and sealability.
Inventors
- 👤 Sadanao Irie
- 👤 Kenichi Tomomoto
- 👤 Toyohiko Akahori
- 👤 Kazuhisa Simomura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:06
CPC Classifications
C; C10; C10B; C10B25/00; C10B25/20; C10B25/24
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
62 words
A COKE OVEN CHARGING-HOLE-CLOSURE CONSTRUCTION COMPRISIN A COKE OVEN COVER AND A COAL CHANGING SEAT ADAPTED TO RECEIVE SAID COKE OVEN COVER IN A TIGHT RELATIONSHIP, THEREBY ESTABLISHING A COMPLETE SEAL BETWEEN THE COKE OVEN COVER AND THE COAL CHANGING SEAT, AT LEAST THE CONTACTING SURFACES BETWEEN SAID COKE OVEN COVER AND SAID COAL CHANGING SEAT BEING MADE OF A REFRACTORY BODY.
Claim 2
Dependent Claim
62 words
A COKE OVEN CHARGING-HOLE-CLOSURE CONSTRUCTION COMPRISIN A COKE OVEN COVER AND A COAL CHANGING SEAT ADAPTED TO RECEIVE SAID COKE OVEN COVER IN A TIGHT RELATIONSHIP, THEREBY ESTABLISHING A COMPLETE SEAL BETWEEN THE COKE OVEN COVER AND THE COAL CHANGING SEAT, AT LEAST THE CONTACTING SURFACES BETWEEN SAID COKE OVEN COVER AND SAID COAL CHANGING SEAT BEING MADE OF A REFRACTORY BODY.
Claim 3
Dependent Claim
17 words
The construction of claim 1, wherein the coke oven cover is in the form of a disc.
Claim 4
Dependent Claim
33 words
The construction of claim 1, wherein the coke oven cover has a refractory body which contains an iron plate joined to at least a portion of the upper surface of said refractory body.
Claim 5
Dependent Claim
28 words
The construction of claim 3, wherein a hole portion is provided in the upper surface of the coke oven cover, said hole portion being provided with handle means.
Claim 6
Dependent Claim
18 words
The construction of claim 3, wherein the iron plate is joined to the refractory body by bolt means.
Claim 7
Dependent Claim
24 words
The construction of claim 3, wherein the iron plate is joined to the refractory body by an adhesive which is resistant to high temperature.
Claim 8
Dependent Claim
20 words
The construction of claim 3, wherein a heat insulating material is disposed between the iron plate and the refractory body.
Claim 9
Dependent Claim
19 words
The construction of claim 3, wherein a space portion is disposed between the refractory body and the iron plate.
Claim 10
Dependent Claim
18 words
The construction of claim 1, wherein the coal charging seat is made substantially wholly of a refractory body.
Claim 11
Dependent Claim
29 words
The construction of claim 1, wherein the coal charging seat is provided with a foot portion which is effective in securing the coal charging seat to a coke oven.
Claim 12
Dependent Claim
23 words
The construction of claim 1, wherein the coke oven cover and the coal charging seat are each made substantially of a refractory body.
Claim 13
Dependent Claim
41 words
The construction of claim 1, wherein the refractory body is a refractory material selected from the group consisting of silicon carbide, silicon nitride, clay, high alumina, pure alumina, fused silica, zircon, cordierite, castable refractory, plastic refractory, gunning refractory and refractory brick.
Claim 14
Dependent Claim
21 words
The construction of claim 1, wherein the coal charging seat is composed of one or more parts secured to each other.
Claim 15
Dependent Claim
15 words
The construction of claim 13, wherein the coal charging seal is composed of four parts.
Claim 16
Dependent Claim
33 words
The construction of claim 1, wherein a hollow portion is positioned in the coal charging seat, said hollow portion being adapted to receive hardward for securing the charging seat to a coke oven.
Claim 17
Dependent Claim
30 words
The construction of claim 1, wherein a spline portion is positioned in the coal charging seat, said spline portion being adapted to secure the charging seat to a coke oven.
Claim 18
Dependent Claim
20 words
A coal charging seat of a coke oven wherein said coal charging seat is made wholly of a refractory body.
Claim 19
Dependent Claim
20 words
A coal charging seat of a coke oven wherein said coal charging seat is made wholly of a refractory body.
Claim 20
Dependent Claim
28 words
The coal charging seat of claim 17, wherein said coal charging seat is provided with a foot portion which is effective in securing it to a coke oven.
Claim 21
Dependent Claim
43 words
The coal charging seat of claim 17, wherein the refractory body is a refractory material selected from the group consisting of silicon carbide, silicon nitride, clay, high alumina, pure alumina, fused silica, zircon, cordierite, castable refractory, plastic refractory, gunning refractory and refractory brick.
Claim 22
Dependent Claim
23 words
The coal charging seat of claim 17, wherein said coal charging seat is composed of one or more parts secured to each other.
Claim 23
Dependent Claim
17 words
The coal charging seat of claim 20, wherein said coal charging seat is composed of four parts.
Claim 24
Dependent Claim
35 words
The coal charging seat of claim 17, wherein a hollow portion is positioned in the coal charging seat, said hollow portion being adapted to receive hardware for securing the charging seat to a coke oven.
Claim 25
Dependent Claim
32 words
The coal charging seat of claim 17, wherein a spline portion is positioned in said coal charging seat, said spline portion being adapted to secure said charging seat to a coke oven.
References Cited (Backward Citations)
US2203698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |