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:
Jun. 02, 1992
Filed:
Dec. 12, 1989
Tetsuro Arikawa, Kanagawa, JP;
Nippon A B S, Ltd., Tokyo, JP;
Abstract
An anti-skid control apparatus for a vehicle includes fluid pressure control valve devices arranged between fluid pressure generating chambers of a tandem master cylinder and the wheel cylinders of the front wheels, respectively, and a control unit receiving outputs of wheel speed sensors for measuring or judging the skid conditions of the front and rear wheels and for generating instructions for controlling the fluid pressure control valve devices. The control unit discriminates the frictionally lower side of the road on which the wheels are running, on the basis of the measuring or judging results of the skid conditions of the rear and/or front wheels, combines logically the measuring or judging result of the skid condition of the one rear wheel running on the low side of the road or the measuring or judging results of the skid conditions of the rear wheels, with that of the one front wheel running on the low side, for generating the instruction for controlling the first or second fluid pressure control valve device for the corresponding front wheel, and generates the instruction for controlling the second or first fluid pressure control valve device for the other front wheel, on the basis of the measuring or judging result of the skid condition of the measuring or judging result of the skid condition of the other front wheel running on the high side independently of those of the rear wheels. The low side can be changed over in accordance with the measuring or judging result. Or the control unit will reset the low side.