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.

Date of Patent:
Mar. 12, 1991

Filed:

May. 02, 1989
Applicant:
Inventor:

Kunihiko Muraoka, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60R / ;
U.S. Cl.
CPC ...
36442403 ; 280735 ; 180271 ; 307 101 ; 340436 ;
Abstract

There is disclosed a power apparatus for diagnosing on air bag equipment, which includes a central processing unit (CPU) having a clock circuit and diagnoses errors and faults occurring in the air bag equipment in order to detect and store error postion, time and condition occurred. The power apparatus comprises a battery circuit for directly connecting a battery and the CPU in order to supply with power of the CPU, an ignition switch circuit for supplying the CPU with the power through an ignition switch, and a changeover control unit for changing a power line in the manner of supplying the CPU with the power through the ignition switch circuit when the engine starts for the first time after delivery, and for supplying the CPU with the power through the battery circuit after failure occurs.


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Muraoka, Kunihiko. (1991). Power apparatus for diagnosing air bag equipment (U.S. Patent No. 4999775). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4999775

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