A seat weight sensor for detecting the weight of a seat occupant. The weight sensor has a case mounted between a seat pan and a seat member. One or more strain gauge resistors are mounted in the case. The resistors generate an electrical signal in response to the case being stressed by the weight of...http://www.google.fr/patents/US6969809?utm_source=gb-gplus-shareBrevet US6969809 - Vehicle seat weight sensor
