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. 28, 2014
Filed:
Aug. 07, 2007
Andreas Giefer, Lemförde, DE;
Jörg Meyer, Wagenfeld, DE;
Ludger Rake, Diepholz, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A parking brake device for motor transmissions, especially automatic transmissions has a parking brake pawl () with an actuating or adjusting device () for engaging and disengaging the pawl () as well as a holding device for securing the parking brake pawl () in the disengaged position. The holding device includes a toggle mechanism () that can be brought from a first, stretched position, in which the parking brake pawl () is fixed in the disengaged position, into a second, bent position, in which the parking brake pawl () can be engaged. This presents a reduction of the design effort, an improvement of robustness and resistance to different ambient conditions with no auxiliary energy requirement for maintaining the securing action for the parking brake pawl and also minimal releasing forces for releasing the parking brake securing.