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:
Mar. 12, 1996
Filed:
Jan. 04, 1994
Mark Carlin, Hermosa Beach, CA (US);
James G McCuskey, Lakewood, CA (US);
Koichi Sugiyama, Nagoya, JP;
TRW Inc., Lyndhurst, OH (US);
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
An apparatus (30) for controlling an actuatable restraining device includes an accelerometer (60) for providing an electrical deceleration signal having a characteristic indicative of vehicle deceleration. An electronic controller (64) is connected to the accelerometer (60) and determines an average crash acceleration (AWIN) value in response to deceleration during a vehicle crash condition. The controller (64) determines a crash velocity value and a variably weighted velocity value (JMM2) equal to crash velocity times a variable weighting factor. The controller (64) provides an actuation signal to actuate the actuatable restraining device (i) when the average velocity value (AWIN) is greater than a first threshold value (WTHRESH) or (ii) when the variably weighted velocity value (JMM2) is greater than a second threshold value (JTHRESH) and the crash velocity is greater than a third threshold value (VTHRESH).