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:
May. 23, 2006
Filed:
Mar. 06, 2003
Yasumasa Hanazaki, Tokyo, JP;
Takashi Furui, Tokyo, JP;
Yasumasa Hanazaki, Tokyo, JP;
Takashi Furui, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A mechanical acceleration switch acting in response to a collision involving a vehicle tends to occur with chattering, thereby lowering the reliability of operation due to insufficient application of an ignition current to an igniter of an air bag in the vehicle. When the mechanical acceleration switch is closed and first-stage igniters are ignited, a forced igniter is turned on. Even if chattering occurs in the mechanical acceleration switch, the first-stage igniters and a backup capacitor are conductively connected by turning on a driving transistor, such that an electric current is sufficiently delivered to the igniters. As a result, it is possible to improve the reliability of the operation of starting the air bag. Furthermore, it is no longer necessary to increase a capacity of the capacitor and change the constitution of the mechanical acceleration switch to decrease chattering therewith.