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:
Oct. 10, 1989
Filed:
Sep. 17, 1987
Tetsuro Arikawa, Kanagawa, JP;
Nippon ABS, Ltd., , JP;
Abstract
In an anti-ski control apparatus for a vehicle braking system including fluid pressure control valve devices and a valve apparatus, when brake-relieving output signals are obtained from both rear wheels, the brake-relieving output signal of the one of the rear wheels that is obtained later than that of the other is combined logically with the brake-relieving output signal of the one of the front wheels running on the same side as the one rear wheels to form a brake-relieving control signal for controlling a first or second fluid pressure control valve device connected to the wheel cylinder of the one front wheel. A brake-increasing control signal is generated by the first or second fluid pressure control valve device after the brake-relieving control signal disappears based on the brake-increasing output signal of the one of the front and rear wheels on the same side which has a stronger locking tendency than the other. In the alternative, the signal is formed based on the brake-increasing output signal of the one of the front and rear wheels on the same side, the acceleration of which is smaller than that of the other. A brake-holding control signal by the first or second fluid pressure control valve device, before the brake-relieving control signal generates, is formed by logical sum (OR) of the brake-holding output signals of the one front and rear wheels on the same side, and a brake-increasing control signal by the first or second fluid pressure control valve device, after the brake-relieving control signal disappears, is formed on the basis of the brake-increasing output signal of the one of the one front and rear wheels on the same side the brake-holding output signal of which has generated sooner than that of the other.