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. 10, 1977
Filed:
Apr. 21, 1976
Applicant:
Inventor:
Casper Janse, Leusden, NL;
Assignee:
Forney International, Inc., Carrollton, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F24F / ; F23L / ;
U.S. Cl.
CPC ...
137601 ; 98110 ;
Abstract
A damper assembly for closing a duct carrying hot gases. The assembly comprises a damper frame mountable in the duct, a plurality of damper blades supported by parallel blade shafts rotatably mounted in the frame, the shafts having shaft ends projecting from the frame at least one side thereof, blade operating arms secured to the projecting blade shaft ends, and linkage means operatively coupling the blade arms to each other and to an actuating device for opening and closing the damper.