US Patent 7287629 Hydrodynamic actuating device for construction machines

Patent 7287629 was granted and assigned to ZF Friedrichshafen on October, 2007 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

ZF Friedrichshafen

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7287629

Patent Inventor Names

Jürgen Legner0

Date of Patent

October 30, 2007

Patent Application Number

10533866

Date Filed

November 8, 2003

Patent Primary Examiner

‌

Richard M Lorence

Patent abstract

A hydrodynamic actuating device has one prime mover, one torque converter and one rear-mounted transmission and is especially adequate for construction machines of wide range of motion such as wheel loaders. For limiting the maximum traction, one primary clutch (16) and one converter bridging clutch (WK) are both coordinated with the torque converter, which are disposed in series so as to be switchable via a single valve controlled by the transmission control with only a control pressure so that in all driving situations, first, the primary clutch (16) and thereafter the converter bridging clutch (WK) are closed.