Control device
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United States of America Patent
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-
Aug 12, 2008
Grant Date -
Apr 20, 2006
app pub date -
Oct 14, 2005
filing date -
Oct 20, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Control device 1 having a changeover valve 5, a pump 4 delivering operating medium, in particular a motor-operated pump or a hand pump, connection devices for connecting the control device 1 to at least two tools, in particular a first lifting cylinder 2 and a second lifting cylinder 3 or the like, the changeover valve 5 being operable in particular by hand; wherein a) the changeover valve 5, when the operator lets go of it, can be brought automatically into a basic position in which no pressure build-up in the region of the tools is possible, b) a control valve 7 is provided between the changeover valve 5 and the tools, and c) the control valve 7 can likewise be operated by hand by an operator.
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