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. 03, 1988
Filed:
Dec. 15, 1986
Yoshinori Ishiguro, Chiryu, JP;
Kohji Kamiya, Chita, JP;
Kiyoshi Miyake, Kariya, JP;
Hideki Kabune, Kariya, JP;
Noriyuki Nakashima, Nagoya, JP;
Masami Itou, Toyota, JP;
Nippondenso Co., Ltd., Kariya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A vehicle height sensor includes switching circuits which are turned on and off in accordance with height of a vehicle. The vehicle height sensor is driven when a drive signal is outputted to the sensor. A preset voltage is fed to terminals of the respective switching circuits via resistors. Voltages at the terminals are outputted as vehicle height data having bits corresponding to the respective switching circuits. When the output of the drive signal is suspended, the vehicle height data are read as vehicle height sensor malfunction detecting data. The malfunction detecting data are compared to preset reference data. The vehicle height sensor is judged to be wrong when the malfunction detecting data differ from the preset reference data.