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:
Jan. 23, 1990
Filed:
Jan. 31, 1989
Seiichi Ishizeki, Tokyo, JP;
Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A vehicle acceleration sensor forming a part of an anti-lock brake control system is tested mounted on a motor vehicle to see if the sensor will be activated at a predetermined degree of vehicle deceleration. A check signal is first impressed to a sensor check terminal of a control circuit included in the anti-lock brake control system, thereby causing the control circuit to light up a warning lamp. The motor vehicle is then moved onto a ramp having an angle with respect to the plane of the horizon corresponding to the predetermined degree of vehicle deceleration. If the sensor is activated on the ramp, the warning lamp is extinguished to indicate the proper functioning of the sensor. The warning lamp remains glowing if the sensor is not activated on the ramp for some inherent trouble or because of errors in mounting the sensor of the vehicle.