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:
Nov. 25, 1997
Filed:
Jul. 12, 1996
Roger S DeVilbiss, Dallas, TX (US);
Harry C Powell, Shipman, VA (US);
Thermotek, Inc., Carrollton, TX (US);
Abstract
A control system for a thermoelectric device to maintain the temperature in a storage compartment at a set point. The system includes input terminals for receiving a DC voltage and output terminals for connecting to the thermoelectric device. First and second switches are provided and coupled to the terminals for connection when enabled by the application of the DC voltage. The system further includes a first diode network connected between the first and second switches and enabling the second switch when the first diode network is enabled; a coupling device operatively connected to the first diode network to enable the first diode network when the coupling device is enabled; a sensor device providing an output indicative of the temperature in the storage compartment; a programmable control device receiving the output from the sensor device and providing an output to the coupling device to enable the coupling device, the output from the programmable control device being determined by the amount of deviation of the sensed temperature in the storage compartment from the set point temperature.