Machine element or mechanism – Control lever and linkage systems – Multiple controlled elements
Patent
1997-03-20
1999-03-02
Marmor, Charles A.
Machine element or mechanism
Control lever and linkage systems
Multiple controlled elements
74527, G05G 9047
Patent
active
058756825
ABSTRACT:
Fore and aft movement of a lever pivots first and second shafts of a cross shaped member while left and right movement of the lever causes a yoke of the lever to pivot on third and fourth shafts of the cross shaped member. The pivotal movement of the first shaft causes a pair of end portions of a torsion spring to generate forces on a force sensor resulting in the output of electrical signals proportional to the fore and aft movement of the lever. Similarly, left and right pivotal movement of the yoke causes a pair of end portions of another torsion spring to generate forces on another force sensor resulting in the output of electrical signals proportional to the left and right movement of the lever. Selectively energizing a coil device fixed relative to a mounting base pulls a washer anchored to the second shaft into mechanical engagement with the coil device to hold the lever at a fore or aft operational position. Similarly, selectively energizing a coil device fixed relative to the yoke pulls a washer anchored to the forth shaft into mechanical engagement with another coil device to hold the lever at a left or right aft operational position.
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Burrows J. W.
Caterpillar Inc.
Grant John W.
Lund Scott
Marmor Charles A.
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