Motors: expansible chamber type – Fluid supply through diverse paths to single expansible chamber – Activation of one path disables second path
Reexamination Certificate
2006-05-02
2006-05-02
Look, Edward K. (Department: 3745)
Motors: expansible chamber type
Fluid supply through diverse paths to single expansible chamber
Activation of one path disables second path
C091S404000
Reexamination Certificate
active
07036421
ABSTRACT:
The invention concerns a driving device, particularly a lifting device for a working vehicle, with a drive in the form of a hydraulic motor, the drive having a first connection and a second connection, a pump and a control valve arrangement between the drive and the pump. It is endeavoured to provide a simple way of extending the functionality of such lifting devices. For this purpose, the control valve arrangement can be switched from a first operating state, in which the motor is driven in a single-acting manner, to a second operating state, in which the motor is driven in a double-acting manner.
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Kershteyn Igor
Look Edward K.
McCormick Paulding & Huber LLP
Sauer-Danfoss (Nordborg) A/S
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