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:
Mar. 18, 2014
Filed:
Apr. 19, 2007
Jürgen Faller, Kahl, DE;
Klaus Lind, Wölfersheim, DE;
Jürgen Faller, Kahl, DE;
Klaus Lind, Wölfersheim, DE;
Abstract
A pneumatic brake servo which can be acted on by a pneumatic differential pressure is described. The brake servo includes an actuable input member comprising a valve piston, an output member for acting on a master brake cylinder, and a control valve which is arranged in a control housing and which can be actuated by the valve piston for controlling the differential pressure. An elastic reaction element is arranged in a control housing recess and against which the output member bears. The input member acts with an input effective area Aon the reaction element, and the output member acts with an output effective area Aon the reaction element. The ratio of output effective area Ato input effective area Adetermines the force boost ratio of the brake servo. Means are provided for adjusting the output effective area Ain the assembled brake servo.