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:
Jul. 25, 1978
Filed:
Dec. 03, 1976
Applicant:
Inventors:
William A Phillips, Comstock Park, MI (US);
David R Dietz, Grand Rapids, MI (US);
Assignee:
Granco Equipment, Inc., Grand Rapids, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F28D / ;
U.S. Cl.
CPC ...
432 30 ; 165-7 ; 432 39 ; 432180 ;
Abstract
An industrial heating furnace wherein hot exhaust gases from the furnace are heat exchanged in a rotary ceramic heat exchanger with air which is supplied to burners in the furnace for combustion air. The temperature of the gases within the furnace is controlled and the ratio of the flow of gases through the two sides of the rotary heat exchanger is controlled at a predetermined value which is approximately one to maximize efficiency of the furnace operation and to minimize thermal stresses on the ceramic heat exchanger.