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:
May. 12, 1987
Filed:
Jul. 24, 1985
Applicant:
Inventor:
Gerd Halbherr, Bochum, DE;
Assignee:
Dr. C. Otto & Comp. GmbH, Bochum, DE;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
13724611 ; 13724622 ;
Abstract
There is disclosed a reversing valve for use with a regenerative coke oven, in which the valve cock is lubricated, having four spaced longitudinally extending lubrication grooves that communicate with lubrication means when the valve is in one of its desired end positions, either open or closed. In a preferred embodiment, means are also provided for introducing degraphitizing air into the grooves, in certain positions of the valve cock.