Driving device, particularly a lifting device for a working...

Excavating – Ditcher – Condition responsive

Reexamination Certificate

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Details

C091S032000

Reexamination Certificate

active

10796846

ABSTRACT:
The invention concerns a driving device, particularly a lifting device for a working vehicle, with a hydraulic drive, in the form of a motor with a first connection and a second connection, a pump, a control valve arrangement between the pump and the drive, and an operating device with at least one operating element with a setting area, with which at least one parameter of the drive can be set. It is endeavoured to provide a simple manner of extending the functionality of the lifting device. For this purpose, it is ensured that the control valve arrangement is optionally controlling the drive to be single-acting or double-acting and the setting area has a first section, in which the drive is controlled to be single-acting and a second section, in which the drive is controlled to be double-acting.

REFERENCES:
patent: 2780204 (1957-02-01), Barley
patent: 3044266 (1962-07-01), Svenson
patent: 4622886 (1986-11-01), Imada et al.
patent: 5287885 (1994-02-01), Smith
patent: 2002/0083825 (2002-07-01), Kusuyama
patent: 2004/0177749 (2004-09-01), Joergensen
patent: 3522823 (1987-01-01), None
patent: 0 838 140 (1998-04-01), None

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