Motor vehicle heated seat control
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 20, 1993
Issued Date -
N/A
app pub date -
Mar 2, 1990
filing date -
May 13, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A control for a resistive heating element embedded within a motor vehicle seat is disclosed. In one embodiment, a transistor is biased into conduction to energize the heating element when the temperature of the element is below a threshold that is adjusted by the vehicle operator. A fault sensing system monitors operation of the control unit and de-energizes the heating element if a fault is sensed. Sensed faults include both short circuits and undesirable open circuits. Power application to the resistive heating unit can be either pulsed or continuous. In one embodiment, once a fault is detected, the heating system cannot be re-energized until the vehicle ignition switch is turned off and then returned to its on position.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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