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:
Nov. 30, 1976
Filed:
Aug. 04, 1975
Yoshimoto Ohta, Ichikawa, JA;
Tokico Ltd., , JA;
Abstract
A hydraulic brake pressure control valve includes a first pressure chamber connectable with a source of hydraulic pressure such as a master cylinder, a second pressure chamber connectable with a rear wheel brake cylinder, a fluid passage for communicating the pressure chambers with each other, and an inertia valve for preventing communication through the fluid passage when deceleration of the vehicle exceeds a predetermined value. The control valve further includes a plunger slidably disposed in a bore, the opposite ends of which are exposed to hydraulic pressure in the first and second pressure chambers respectively. A piston is slidably disposed in a bore and has one end which is exposed to hydraulic pressure in the first pressure chamber and another end which is exposed to atmospheric pressure or gas pressure. A first spring acts on the piston against hydraulic pressure in the first pressure chamber, and a second spring moves the plunger toward the first pressure chamber when the piston is moved against the spring force of the first spring.