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.

Date of Patent:
Aug. 18, 1981

Filed:

May. 07, 1979
Applicant:
Inventors:

Hitoshi Kubota, Fujisawa, JP;

Kazuaki Shimizu, Fujisawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60T / ;
U.S. Cl.
CPC ...
303 / ; 303 / ; 303 / ;
Abstract

A hydraulic pressure control valve assembly comprising a proportioning valve and a deceleration sensing valve is such arranged that when the magnitude of hydraulic pressure in an expandable chamber of the deceleration sensing valve exceeds a predetermined value in response to rapid deceleration of the vehicle, a piston associated with the expandable chamber is brought into contact with a plunger of the proportioning valve thereby suppressing the axial movement of the plunger in a direction toward the piston. Thus, under this condition, the normal operation of the proportioning valve stops so that the hydraulic pressure in the fluid inlet port is supplied to the fluid outlet port, keeping the pressure unchanged.


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