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. 15, 2008
Filed:
Nov. 06, 2003
Monika Ivantysynova, West Lafayette, IN (US);
Jürgen Weber, Dresden, DE;
Monika Ivantysynova, West Lafayette, IN (US);
Jürgen Weber, Dresden, DE;
CNH Baumaschinen GmbH, Berlin, DE;
Abstract
With a hydrostatic multi-motor drive unit with a least two hydraulic motors acting upon a common load, a solution should be created, with which a further operating range is covered by the use of several motors and at the same time a simple as possible and problem free coupling of the motors is assured. Furthermore, a method for controlling the drive unit is indicated, which permits continuous transitions between the different operating ranges. This is achieved in that the motors () are connected with each other through at least one freewheel device (), in which the motor () arranged after the freewheel device has a variable displacement volume.