Sam Te Adlparvar

US Patent:

56539045, Aug 5, 1997

Filed:

Jun 18, 1996

Appl. No.:

8/665688

Inventors:

Sam Adlparvar - Houston TX
Hassan Adlparvar - Houston TX

International Classification:

B60L 102
B60H 102

US Classification:

219203

Abstract:

A system for automatically defogging both the windshield and rear window of an automobile. The system includes moisture and dew detection sensors positioned on the interior surfaces of the windshield and the rear window of the automobile. The sensors transmit an electrical current signal to a program control module. If the current received by the program control module from either of the windshield sensors exceeds a predetermined response threshold, it will energize a relay to activate the windshield blower. On the other hand, should the program control module receive a signal from one of the sensors on the rear window, it will energize another relay to activate a resistance heating grid on the rear window. When the condensation on either the windshield or rear window has been evaporated, the program control module will deactivate the associated defogging device.