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:
Apr. 14, 1981
Filed:
Mar. 07, 1980
Mitutoyo Mizusawa, Ueda, JP;
Nissin Kogyo Kabushiki Kaisha, Ueda, JP;
Abstract
A brake oil-pressure control valve device for vehicles in which operating oil pressure of rear wheel brakes is automatically controlled in accordance with the braking force as required. The device comprises first and second branch oil passages branched from an oil passage connected to a rear wheel brake output port of a master cylinder, a reducing valve interposed between the first branch oil passage and the rear wheel brakes, springs for determining pressure to start reducing action of the reducing valve, a control piston disposed in an oil pressure chamber communicated with the second branch oil passage to normally hold the reducing valve in its open position, and a weight valve disposed within the valve chamber to sense deceleration of the vehicle.