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:
Mar. 19, 2002
Filed:
Aug. 02, 2000
Applicant:
Inventor:
Glen Chester Young, Ft. Wayne, IN (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F24F 7/00 ; G05D 1/500 ;
U.S. Cl.
CPC ...
F24F 7/00 ; G05D 1/500 ;
Abstract
An electrical circuit for controlling the activation of a fan includes optically coupled isolators. The circuit is electrically connected in series to a thermostat including a bimetal actuated contact with an anticipator across the contact. Power to the circuit is provided by voltage developed across the system relay coil in series with the thermostat. A zener diode establishes a threshold voltage consistent with the operation of the system relay coil and the thermostat. The optically coupled isolators provide the required electrical isolation needed to protect the thermostat from a power control circuit of an electronically controlled fan.