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:
May. 10, 2011
Filed:
Jun. 17, 2005
Thomas John, Alitzheim, DE;
Dieter Kraxner, Wurmberg, DE;
Thomas John, Alitzheim, DE;
Dieter Kraxner, Wurmberg, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Dr. Ing. h.c. F. Porsche Aktiengesellschaft, Stuttgart, DE;
Abstract
A gearbox arrangement for a drive train of a motor vehicle, such as a double clutch gearbox arrangement or a power shift gearbox arrangement, has at least one group of gear-shifting elements () which can be actuated for engaging and disengaging at least one respective gear of the gearbox arrangement in that they are moved relative to a gearbox housing between at least one neutral position, in which no gear associated with the gear-shifting element is engaged, and at least one engaged-gear position, in which a gear associated with the gear-shifting element and the engaged-gear position is engaged. The arrangement according to the invention is characterised by at least one safety device () associated with the gear-shifting elements or with a group of gear-shifting elements, which takes a release position when all the gear-shifting elements are in their neutral position, and which can be moved from the release position to a safety position when one of the gear-shifting elements is moved into one of the engaged-gear positions, the safety device preventing the other gear-shifting elements from moving from their neutral position to an engaged-gear position.