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:
Dec. 01, 1992
Filed:
Jan. 29, 1991
Applicant:
Inventor:
Allan W Rogne, Two Rivers, WI (US);
Assignee:
W. R. Grace & Co. Conn., New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137375 ; 137601 ; 251308 ;
Abstract
A high temperature control damper for use in an air flotation dryer with built-in afterburner or any other high temperature environment. Two damper blades are mounted between high temperature bearings and rotate in an insulated housing. The inner ends of the damper engage in a ship-lap joint, and the outer ends of the damper engage against sealing flanges.