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. 23, 2002
Filed:
Jul. 03, 2001
Applicant:
Inventors:
G. Jeffrey Hugghins, Jacksonville, TX (US);
Robert W. Helt, Tyler, TX (US);
Leonard W. Holmes, Arp, TX (US);
James T. Vershaw, Tyler, TX (US);
Timothy W. Storm, Tyler, TX (US);
Assignee:
American Standard International Inc., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 5/04 ; F23N 3/00 ;
U.S. Cl.
CPC ...
H02H 5/04 ; F23N 3/00 ;
Abstract
A method of controlling a variable speed draft inducer motor and fan in a gas furnace. The method comprises the steps of: detecting a first fault driving the motor to a maximum operating range; detecting a second fault forcing the motor to operate towards a minimum operating range; and generating a fault signal if both faults are detected substantially simultaneously.