Patent ID: 8033210

Claim:
Device for managing the operation of a hydraulic motor having at least two operationally active displacements and able to be connected to two main ducts, for admission and exhaust respectively, the motor comprising two series of distribution ducts each having a first and a second group of distribution ducts, the management device comprising a displacement selector able to occupy at least a large displacement position in which the first groups of distribution ducts of the first and second series are connected to one of the main ducts, while the second groups of distribution ducts of the first and second series are connected to the other main duct, and a small displacement configuring in which the first group of distribution ducts of the first series is connected to one of the main ducts, while the second group of distribution ducts of the first series is connected to the other main duct and a by-pass connection is provided between the first group of distribution ducts of the second series and the second group of distribution ducts of the second series, the device comprising a restriction capable, in the small displacement configuration, of restricting the by-pass connection.