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:
Jul. 19, 1994
Filed:
Dec. 11, 1992
Yukio Hoshoya, Shizuoka, JP;
Kei Fukuyo, Shizuoka, JP;
Nissinbo Industries, Inc., Tokyo, JP;
Abstract
The present invention is directed to a pressure control unit for a brake system that includes a master cylinder connected to brake circuits for a plurality of drive and follower wheels, each brake circuit being connected to a wheel cylinder through a main brake line. The pressure control unit for each of the drive wheels incorporates a selector valve, fitted in the main brake line on a master cylinder side of a connection between the main brake line and the delivery line, the selector valve being formed to switch to a closed state only during traction control operation; a reflux line which connects a master cylinder reservoir and the suction line; a switching valve installed in the reflux line, the switching valve being formed to switch to a free passage state between a master cylinder reservoir and the suction line during traction control operation; a relief valve, fitted across both the main brake line and the reflux line, wherein when the pressure from the delivery line reaches or exceeds a threshold level, the relief valve opens to exhaust excess hydraulic pressure of the delivery line to the reflux line, and at all other times the relief valve remains closed; and a check valve connected to the suction line on a working fluid reservoir side of a connection with the reflux line.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile