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:
Feb. 06, 1990
Filed:
Sep. 22, 1988
Applicant:
Inventors:
Bernard T Brown, St. Louis, MO (US);
Donald E Donnelly, Glen Carbon, IL (US);
Bartholomew L Toth, Crestwood, MO (US);
Assignee:
Emerson Electric Co., St. Louis, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05D / ;
U.S. Cl.
CPC ...
165 111 ; 165 26 ; 165 27 ; 236 94 ; 361 35 ; 361 91 ;
Abstract
A low-voltage space thermostat for controlling operation of a heating and cooling system is provided with integral circuit means for detecting the existence of an unacceptably high voltage potential between two wiring terminals therein. Such a high voltage potential exists when the power source in the system comprises two transformers connected out of phase with each other.