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:
Jun. 13, 2006
Filed:
Feb. 21, 2002
Eberhard Wilks, Daufenbach, DE;
Manfred Eidam, Wilthen, DE;
Wolfgang Wiest, Ulm, DE;
Peter Dziuba, Frickingen, DE;
Eberhard Wilks, Daufenbach, DE;
Manfred Eidam, Wilthen, DE;
Wolfgang Wiest, Ulm, DE;
Peter Dziuba, Frickingen, DE;
GKN Walterscheid GmbH, , DE;
Bibus Hydraulik AG, , DE;
Abstract
A drive assembly for vehicles with front wheels and rear wheels, especially for tractors, agricultural machinery, construction machinery or for self-driving machines, has an engine (), a first drive () to drive the rear wheels, a second drive () to drive the front wheels, an adjustable hydraulic pump () driven by the engine (), and an adjustable first hydraulic motor (). The first hydraulic motor (), with respect to drive, is connected to the first drive () to drive the rear wheels. Also, the first hydraulic motor, with respect to drive, may be connected to the second drive (), to drive the front wheels. A second hydraulic motor (), with respect to drive, can be connected to the second drive () to drive the front wheels. The first hydraulic motor () has a high coefficient of efficiency within a first driving speed range of the vehicle. The second hydraulic motor () has a high coefficient of efficiency within a second driving speed range of the vehicle. The first driving speed range is above the second driving speed range, with both driving speed ranges overlapping.