The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 27, 1976
Filed:
Aug. 02, 1974
Applicant:
Inventor:
Osamu Sudo, Fijisawa, JA;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E06B / ; C10B / ;
U.S. Cl.
CPC ...
49480 ; 49485 ; 49494 ; 202248 ;
Abstract
A device for sealing a door of a coke oven includes a ring-shaped steel packing fitted over an outer surface of the door so as to contact a side wall of the coke oven when the door is closed, a packing retainer fitted over the outer surface of the steel packing and provided with a ring-shaped groove opened toward the side wall and a ring-shaped packing assembly fitted into the groove so as to press against the side wall. The packing assembly extends closer to the side wall of the coke oven than the steel packing.