Electronic directional control circuit

Details Electronic directional control circuit Electronic directional control circuit

1978-06-29

1979-12-11

Hix, L. T.

Electrical transmission or interconnection systems

Vehicle mounted systems

180 77R, 318 10, 318285, 74866, B60K 3100

Patent

active

041785185

ABSTRACT:
Lift trucks (10) have many hand control levers which are manipulated to hoist a load, propel the lift truck (10) forward and rearward, and steer the lift truck (10). Some operations must be performed sequentially rather than simultaneously which increases loading time. An electronic directional control circuit (34) includes apparatus (36) for producing first and second command signals, apparatus (38) for producing first and second outputs in response to the first and second command signals, and apparatus (40) for delaying production of a preselected one of the first and second outputs a preselected time sufficient for the selected output to decrease to a preselected magnitude prior to the production of the other of the first and second outputs. The electronic directional control circuit (34) is useable with vehicles (10) which initiate the command signals with a foot operated pedal (12) while leaving the hands free for simultaneously operating other controls.

REFERENCES:
patent: 2968967 (1961-01-01), Ross
patent: 3805640 (1974-04-01), Schneider et al.

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