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:
Feb. 17, 2015
Filed:
Sep. 22, 2009
Andreas Weiss, Bad Soden, DE;
Juergen Faller, Kahl, DE;
Andreas Bischoff, Bad Vilbel, DE;
Volker Ickler, Kirchheim, DE;
Ralf Jakobi, Floersheim, DE;
Sven Mainz, Eddersheim, DE;
Andreas Weiss, Bad Soden, DE;
Juergen Faller, Kahl, DE;
Andreas Bischoff, Bad Vilbel, DE;
Volker Ickler, Kirchheim, DE;
Ralf Jakobi, Floersheim, DE;
Sven Mainz, Eddersheim, DE;
Abstract
A tandem-type pneumatic brake booster, in particular for hydraulic vehicle brake systems, having a housing comprising a first and a second housing half shell, the interior of which is divided with the aid of a partition into a front and a rear booster chamber, wherein the partition has a centrally arranged, circular cavity, through which a control housing or a cylindrical control housing extension extends, and the partition rests sealingly against the control housing or the control housing extension by a sealing element, having a first and a second movable wall, which respectively subdivide the front and the rear booster chamber into a first low-pressure chamber and a first working chamber and into a second low-pressure chamber and a second working chamber, having at least one connecting conduit between the first working chamber and the second working chamber in order to equalize the pressure between said two working chambers.