Steerable wheel direction indicator

Details Steerable wheel direction indicator Steerable wheel direction indicator

1987-03-12

1988-03-01

Crosland, Donnie L.

Communications: electrical

Selective

Having indication or alarm

340671, 340672, 340686, 116 31, 200 6154, 74484R, 180 628, 180271, B60Q 100, B60Q 142

Patent

active

047289236

ABSTRACT:
The indicator is especially useful for an industrial truck with a steerable wheel which can be turned through a steering arc of as much as one hundred eighty degrees. The indicator includes a potentiometer mechanically coupled to be rotated in synchronism with the steering rotation of the steerable wheel, and a multiple voltage threshold detector circuit connected to receive the variable voltage from the potentiometer and operable to provide one out of N discrete output signals in response to potentiometer voltages which have predetermined voltage level relationships to the respective voltage thresholds. At least N discrete indicator lamps are arranged in an array for indicating steerable wheel direction, and the indicator lamps are connected to receive the discrete output signals from the multiple voltage threshold detection circuit for indicating travel direction.

REFERENCES:
patent: 3936071 (1976-02-01), Ricketts, Jr. et al.
patent: 4007357 (1977-02-01), Yanagishima
patent: 4417230 (1983-11-01), Fachini et al.

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