Three function control system
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United States of America Patent
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-
May 31, 1994
Grant Date -
N/A
app pub date -
Jul 29, 1992
filing date -
Jul 29, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A three function control system for independently or conjointly controlling three separate hydraulic valves through manipulation of a single control lever. The control system basically includes a single vertically elongated control lever mounted for manipulation through first and second control arcs and has a handle assembly carried at a free upper end of the control lever to facilitate one-handed control over the three valves. First and second linkage assemblies translate arcuate movements of the control lever through the first and second arcs, respectively, into regulatory operations of a first and second hydraulic valves, respectively. A third linkage assembly transmutes twisting movements of the control lever into regulatory movements for the third valve thereby facilitating single-handed control over all three hydraulic valves. A locking mechanism releasably holds the handle assembly to inhibit inadvertent operations of the valves.
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