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:
Dec. 21, 1993
Filed:
Oct. 29, 1992
Koji Takata, Itami, JP;
Masato Yoshino, Itami, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A brake fluid pressure control device has a wheel brake fluid pressure control valve including a discharge valve provided in a main fluid passage extending from a master cylinder to wheel brakes. A discharged fluid reservoir is provided to temporarily store the brake fluid discharged from the discharge valve. A pump is provided to pump the brake fluid out of the discharged fluid reservoir to return it to the main passage. A fluid supply passage branches from the main passage at a point upstream of a flow return point from the pump and extends to the discharged fluid reservoir. A traction control changeover valve is provided to check a fluid flow from the flow return point toward the master cylinder during traction control. A shutoff valve is provided to check a fluid flow from the master cylinder to the discharged fluid reservoir through the fluid supply passage while the master cylinder is pressurized. Further, the control device has an intermediate fluid reservoir provided upstream of the shutoff valve so as to be brought into communication with the supply passage during the traction control.