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:
Sep. 03, 1991
Filed:
Jan. 04, 1989
Mitsuhiko Masegi, Nukata, JP;
Masao Sakurai, Oobu, JP;
Motoharu Naitou, Okazaki, JP;
Akira Kondo, Nagoya, JP;
Toshiaki Ota, Anjo, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
A vehicle operator protection system includes an actuating device, a battery for supplying the actuating device with electric power, and a backup capacitor charged by the battery and supplying power to the actuating device when the battery becomes inoperable. It further includes a switch for cutting off the power supply from the battery and a determining circuit for detecting a discharging condition of the backup capacitor after it has been cut off from the power supply with the switch to determine the existence of an abnormality in the backup capacitor and the actuating device. Through the detection of the discharging condition of the backup capacitor, determination of the existence of an abnormality, based on the intended function of the backup capacitor, can be achieved.