Three function control mechanism

Details Three function control mechanism Three function control mechanism

1989-12-08

1990-07-03

Herrmann, Allan D.

Machine element or mechanism

Control lever and linkage systems

Multiple controlled elements

1376362, 180333, G05G 904

Patent

active

049380915

ABSTRACT:
A three-function control lever is provided with a main ball joint operatively coupling the control lever to a console. An operator plate is coupled to the control lever for manipulating a first and second control link for manipulating an first and second hydraulic control valve. The first and second control links are coupled to the operator plate by first and second auxiliary ball joints. A radially extending arm projecting from the control lever controls the positioning of a third link for manipulating a third hydraulic control valve. The third link is coupled to the radially extending arm by a bell crank and auxiliary link. The auxiliary link is operatively coupled to the radially extending arm by a third auxiliary ball joint. A stabilizing link is operatively coupled to the operator plate and a fixed element to preventing the rotation of the operator plate when the control lever is twisted. The centerpoints of the first, second and third auxiliary ball joints and the main ball joint are located in substantially the same plane.

REFERENCES:
patent: 3131574 (1964-05-01), Clingerman
patent: 3321990 (1967-05-01), Densmore
patent: 3388609 (1968-06-01), Miller
patent: 4187737 (1980-02-01), Mori et al.
patent: 4283964 (1981-08-01), Grattapaglia
patent: 4489805 (1984-12-01), Okabe
patent: 4526055 (1985-07-01), Batchelor et al.

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