US4129307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing device for coke oven doors
Assignee: Individual
•
Filing: 1977-08-09
•
Granted: 1978-12-12
•
Expires: 1997-08-09
Abstract
Abstract A device for sealing a steel door of a coke oven, the structure provides a sealing member disposed over the entire periphery of the steel door, the member closing the opening formed in the wall of the body of the coke oven. The sealing member includes a tubular covering material and a spring disposed within the covering material, the combination forming an elastic member, a metallic seal piece having a seal lip being secured to an end of the elastic member which confronts the coke oven body.
Inventors
- 👤 Taiji Nishiura
- 👤 Kazutomi Shimamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:51
CPC Classifications
C; C10; C10B; C10B25/00; C10B25/02; C10B25/16
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
130 words
A device for sealing a steel door of a coke oven comprising elastic sealing means disposed on the door and including at least one spring member and an elastic covering tubular member of thin metal being outwardly inflated when a pressure is applied to said elastic sealing means to compress said spring member, said spring member covered by said covering tubular member and disposed to bias the covering member to extend the length thereof in one direction; and a sealing element having a seal lip, the sealing element being secured to the sealing means in confronting relation to the body of the coke oven, the seal lip engaging surface portions of said coke oven body on closure of the door and being resiliently biased thereagainst by the elastic sealing means.
Claim 2
Independent Claim
130 words
A device for sealing a steel door of a coke oven comprising elastic sealing means disposed on the door and including at least one spring member and an elastic covering tubular member of thin metal being outwardly inflated when a pressure is applied to said elastic sealing means to compress said spring member, said spring member covered by said covering tubular member and disposed to bias the covering member to extend the length thereof in one direction; and a sealing element having a seal lip, the sealing element being secured to the sealing means in confronting relation to the body of the coke oven, the seal lip engaging surface portions of said coke oven body on closure of the door and being resiliently biased thereagainst by the elastic sealing means.
Claim 3
Dependent Claim
42 words
The device of claim 1 wherein the sealing element is provided at lower and side portions of the door proximate to the lower portions with a single seal lip and is provided at other portions thereof with a plurality of seal lips.
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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) | 1981-12-11 | 1982-06-12 | 1982-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-11 | 1986-06-12 | 1986-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-11 | 1990-06-12 | 1990-12-12 | $7700.00 | Window Closed / Lapsed |