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US4086231A Expired / Lapsed US ⏱️ 0.0 years remaining

Coke oven door construction

Assignee: Enprotech Corp
•
Filing: 1975-10-28
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Granted: 1978-04-25
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Expires: 1995-10-28
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Abstract

Abstract A coke oven door for a coke oven which has an oven opening with a receiving frame extending around the opening comprises a door body with a sealing plate secured to the face of the door body which is adapted to close the oven opening. The sealing plate is of thin metal material and is held in spaced relationship to the front face of the door body by spacers. The plate includes an annular peripheral portion with an inturned flange directed inwardly toward the receiving frame. Spring biasing means mounted on the door engage against the rear edge of the flange at spaced locations around its periphery and bias the flange inwardly into sealing engagement with the receiving frame.

Inventors

  • 👤 Takatoshi Ikio

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 05:32
CPC Classifications
C; C10; C10B; C10B25/00; C10B25/02; C10B25/16; C10B25/06

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 209 words
A door for a coke oven having an oven opening with a receiving frame extending around the opening, comprising a door body having a front face facing the oven, a sealing plate secured to said door body front face and having an annular peripheral portion with an inturned flange directed inwardly toward the receiving frame, a plurality of spacer means between said sealing plate and said door body holding said sealing plate in spaced relationship to said door body and defining a vent space therebetween, a plurality of vent openings in said door body along the height thereof for venting said space along its complete height, biasing means biasing said flange against the receiving frame to seal the periphery of said plate to the coke oven receiving frame, and a support arm extending outwardly from each side of said body adjacent the upper and lower portions thereof and bearing against the receiving frame to adjust the position of the door body with respect to the frame, wherein said biasing means include a plurality of spring holders carried by said door body, a member movable in each spring holder and engageable with said flange on the exterior thereof, and a spring in each holder biasing said member against said flange.
Claim 2
Dependent Claim 209 words
A door for a coke oven having an oven opening with a receiving frame extending around the opening, comprising a door body having a front face facing the oven, a sealing plate secured to said door body front face and having an annular peripheral portion with an inturned flange directed inwardly toward the receiving frame, a plurality of spacer means between said sealing plate and said door body holding said sealing plate in spaced relationship to said door body and defining a vent space therebetween, a plurality of vent openings in said door body along the height thereof for venting said space along its complete height, biasing means biasing said flange against the receiving frame to seal the periphery of said plate to the coke oven receiving frame, and a support arm extending outwardly from each side of said body adjacent the upper and lower portions thereof and bearing against the receiving frame to adjust the position of the door body with respect to the frame, wherein said biasing means include a plurality of spring holders carried by said door body, a member movable in each spring holder and engageable with said flange on the exterior thereof, and a spring in each holder biasing said member against said flange.
Claim 3
Dependent Claim 32 words
A door for a coke oven according to claim 1, including a brick work frame secured to said sealing plate and adapted to extend inwardly into the oven from said sealing plate.
Claim 4
Dependent Claim 19 words
A door according to claim 1, wherein said inturned flange includes a knife edge bearing against the receiving frame.
Claim 5
Dependent Claim 38 words
A door according to claim 1, wherein said spacer means comprise hollow spacers extending between said sealing plate and said door body and a bolt extending through said hollow spacers holding said sealing plate to said door body.

References Cited (Backward Citations)

US1399594A Cited
US2126239A Cited
US2209590A Cited
US2442348A Cited
US3032483A Cited
US2867012A Cited
US2965550A Cited
SU401698A1 Cited
US3881995A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-04-24 1981-10-24 1982-04-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-04-24 1985-10-24 1986-04-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-04-24 1989-10-24 1990-04-25 $7700.00 Window Closed / Lapsed

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