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:
Sep. 22, 1987
Filed:
Mar. 11, 1986
Applicant:
Inventor:
Anthony L Wondergem, Waikowhai, NZ;
Assignee:
Development Finance Corporation, Auckland, NZ;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60T / ;
U.S. Cl.
CPC ...
303117 ; 303119 ;
Abstract
A pressure regulator for an anti-lock braking system has a pressure modulating plunger having different cross-sections along its length to vary the available fluid volume within a chamber situated in a brake line between a master cylinder and a wheel cylinder. The plunger also incorporates a cam portion so that rotation of the plunger causes the cam portion to operate a valve allowing fluid to flow into the chamber. Closing of the valve allows the plunger to move in or cut of the chamber to modulate the brake pressure between the regulator and the wheel cylinder to counteract locking of the wheel and consequent skidding.