Control lever neutral lock mechanism

Details Control lever neutral lock mechanism Control lever neutral lock mechanism

1993-12-02

1995-10-17

Bonck, Rodney H.

Machine element or mechanism

Control lever and linkage systems

Elements

74528, 74529, 74545, 74532, G05G 504

Patent

active

054580218

ABSTRACT:
A guide mechanism for controlling the pivotal positioning of a hydraulic control lever on tractors is disclosed wherein the guide mechanism incorporates a positive neutral lock in the form of a tab that is projectable into an opening within the control lever that is alignable therewith when in a neutral position. The guide mechanism includes a thumb wheel portion that projects upwardly through the control panel for manipulation by the operator for selectively rotating the guide mechanism to align a slotted opening therein with the control lever to limit the movement thereof in a preselected manner. The guide member is rotatable to four orientations to correspond to a neutral lock position, a float lockout position, a hydraulic motor mode position, and an unrestricted free range of movement position for the control lever.

REFERENCES:
patent: 963930 (1909-06-01), Olson
patent: 2246919 (1940-07-01), Krantz
patent: 2427804 (1947-09-01), Mueller
patent: 2900836 (1958-09-01), Gleeson et al.
patent: 4116086 (1978-09-01), Langford et al.
patent: 4522394 (1985-06-01), Brovsgard
patent: 4548094 (1985-10-01), Huitema
patent: 4942949 (1990-07-01), Dai
patent: 5150592 (1992-09-01), Lin

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