HYDROSTATIC DRIVE SYSTEM
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United States of America Patent
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N/A
Issued Date -
Dec 23, 2010
app pub date -
Feb 3, 2009
filing date -
Feb 19, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a hydrostatic drive system having a pump (1) and at least one consumer (6) that can be connected alternately to the pump (1) and to a tank (3) by means of a directional control valve (4) that can be actuated by control signals (15, 16), in order to control the motion of a positive or a negative load (9) at the consumer. Provision is made to this effect that there is disposed in the line (13) of the negative connection of the consumer that leads via the directional control valve (4) to the tank (3) a pre-charge valve (5, 51, 60) that can be placed under a pressure that can be controlled via a programmable logic unit (31) when controlling a positive load.
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