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Patent Searching and Data


Title:
HYDRODYNAMIC ACTUATING DEVICE FOR CONSTRUCTION MACHINES
Document Type and Number:
WIPO Patent Application WO/2004/046587
Kind Code:
A1
Abstract:
The invention relates to a hydrodynamic actuating device comprising a transmission motor, a torque converter and a transmission connected behind. The inventive actuating device is used, in particular for construction machines having an extended range of motion such as a wheel loader. In order to limit a maximum tractive force, a preliminary clutch (16) and a bridging clutch of the converter (WK) are connected to the torque converter and mounted in series in such a way that they are switchable by one valve which is controlled by a transmission control by means of a control pressure by engaging first and foremost the primary clutch (16) and afterward the bridging clutch of the converter (WK) at all driving conditions.

Inventors:
LEGNER JUERGEN (DE)
Application Number:
PCT/EP2003/012478
Publication Date:
June 03, 2004
Filing Date:
November 08, 2003
Export Citation:
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Assignee:
ZAHNRADFABRIK FRIEDRICHSHAFEN (DE)
LEGNER JUERGEN (DE)
International Classes:
F16H45/02; F16H61/14; (IPC1-7): F16H61/14; F16H45/02
Foreign References:
US5400884A1995-03-28
EP0308072A11989-03-22
EP0512726A21992-11-11
Other References:
See also references of EP 1561052A1
Attorney, Agent or Firm:
ZF FRIEDRICHSHAFEN AG (Friedrichshafen, DE)
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