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. 17, 2009
Filed:
Dec. 03, 2003
Stefan Renner, Bodman-Ludwigshafen, DE;
Reiner Keller, Ludwigshafen-Bodman, DE;
Markus Ulbricht, Tettnang, DE;
Stefan Renner, Bodman-Ludwigshafen, DE;
Reiner Keller, Ludwigshafen-Bodman, DE;
Markus Ulbricht, Tettnang, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A transmission brake () is described, where one transmission shaft () can be braked to carry out an upshift operation. The aim of the invention is to provide a transmission brake that is devoid of any hydraulic or pneumatic actuation device and that requires very little axial installation space. Such a transmission brake () has one electromagnetic actuation device () with which the friction elements () of the transmission brake () can be pressed against each other for actuating the brake.