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. 16, 1984
Filed:
Mar. 17, 1983
Yoshihiro Hayashida, Kanagawa, JP;
Tokico Ltd., , JP;
Abstract
A hydraulic pressure control valve for use in a dual circuit braking system of an automotive vehicle, and including a plunger slidably received in an elongated bore in a housing with opposite ends thereof being exposed to respective pressure circuits, and two pressure proportioning valve mechanisms being mounted on the housing with the axii thereof being perpendicular to the plunger, each valve mechanism including a stepped piston, an axial passage extending through the piston, a valve seat defined on one end of the passage, and a valve member cooperating with the valve seat. The plunger has on opposite end portions large and small diameter portions interconnected by an inclined surface portions, and a control member is interposed between the plunger and each valve member of the valve mechanism with one end abutting normally with the large diameter portion of the plunger and the other end being connected to the valve member such that when the control member abuts with the small diameter portion of the plunger in response to the axial displacement thereof the control member carries the valve member in the direction separating from the piston thereby preventing pressure proportioning function of the valve mechanism.