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:
Apr. 27, 2010
Filed:
Feb. 02, 2005
Mario Steinborn, Friedrichshafen, DE;
Rainer Petzold, Friedrichshafen, DE;
Martin Miller, Immenstaad, DE;
Mario Steinborn, Friedrichshafen, DE;
Rainer Petzold, Friedrichshafen, DE;
Martin Miller, Immenstaad, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
In a shifting unit () for a vehicle transmission gearbox, the switching unit comprising valves which are connected between with one another by a pressure supply line conduit () and by a pressure exhaust line () associated with a switch chamber () of a switch cylinder (). The switch chamber () of switch cylinder () has exhibits at least one opening valve () and at least one closing valve () through additional valves (); and the pressure supply line () and the pressure exhaust line () are separately closed, opened, blocked and/or swapped.