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. 08, 1977
Filed:
Sep. 13, 1976
Hiroyuki Oka, Toyodashi, JA;
Masashi Ishihara, Toyodashi, JA;
Abstract
The piston of a brake control valve assembly is balanced, during normal front hydraulic system operations, at a predetermined position to allow pressurized brake fluid from a rear master cylinder to flow into a rear wheel cylinder from between a head flange and a seal valve with a predetermined pressure. When the braking operation is sought during trouble or failure in the front hydraulic system, the piston loses its regulated balance and moves, together with a piston sleeve and the seal valve so that the effective area for receiving brake fluid pressure from a rear master cylinder becomes greater than that of the rear wheel cylinder thereby to increase brake fluid pressure transmitted to the rear wheel cylinder. The present invention features particularly the improvement, or reversewise utilization, of the conventional proportioning valve mechanism to permit a very rational brake fluid pressure boosting operation.