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:
Jan. 03, 1984
Filed:
Feb. 24, 1981
Norbert Spielmann, Ebern, DE;
Fag Kugelfischer Georg Scha/ fer & Co., Schweinfurt, DE;
Abstract
A hydraulic brake assembly with pneumatic power assist has a master cylinder inserted in a housing in turn at least partially surrounded by an annular power-booster device comprising a pair of annular chambers divided by a membrane. The membrane is connected via a plate and a sleeve or tie rods to a tension rod axially traversing a substantial portion of the master cylinder. The tension rod engages an actuator piston placed in compression by a push rod upon the actuation of a brake pedal linked thereto. The force for actuating a fluid-compression piston in the master cylinder is thus transmitted thereto partly via tension-stressed elements and partly via compression-stressed elements. Force feedback to the brake pedal is implemented either hydraulically via fluid-flow channels in the tension rod or mechanically via a lever inside or outside the housing. A fluid reservoir is removably mounted on the housing in juxtaposition to the booster chambers and transversely to the housing axis.