Machine element or mechanism – Control lever and linkage systems – Elements
Patent
1989-10-19
1991-11-05
Luong, Vinh T.
Machine element or mechanism
Control lever and linkage systems
Elements
74527, G05G 506
Patent
active
050623168
ABSTRACT:
An apparatus for controlling the position of an operating handle includes a plate which couples such operating handle to a device such as a hydraulic valve. The plate includes a detent notch, a shoulder and a control surface. An auxiliary lever is mounted for pivoting movement between a first, engaged position and a second, disengaged position and is maintained in either position by a compression spring. Such compression spring exhibits toggling movement as the lever is moved between positions. The lever includes a pin for engaging the detent notch when the lever is in the first position and the handle is thereby retained in a predetermined position. When the pin is in contact with the control surface and with the shoulder, the handle is retained in an operating position. Movement of a stop mechanism to a position which does not obstruct handle movement also permits the operating handle to move to a "float" position.
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Kemper Philip T.
Lykken Thomas G.
J. I. Case Company
Luong Vinh T.
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