Switching device for a machine
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United States of America Patent
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-
Jan 20, 2004
Grant Date -
N/A
app pub date -
Dec 26, 2001
filing date -
Jul 1, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A switching device for a machine, especially a digger, has at least one supply connection and one useful connection in addition to at least one hydraulic accumulator. An on-off valve is arranged between the supply connection and the useful connection, and separates the supply connection at least partially from the useful connection in one of its switching positions, in addition to ensuring that the hydraulic accumulator is charged on the fluid side via the supply connection. In another switching position, the supply connection is connected to the useful connection. A substantial improvement relative to conventional switching devices is attained by being able to guarantee an emergency function before the machine is used to perform work.
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