Rotational direction indicating apparatus

Details Rotational direction indicating apparatus Rotational direction indicating apparatus

1978-05-22

1981-03-31

Rubinson, Gene Z.

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318283, G05B 2302

Patent

active

042596254

ABSTRACT:
A direction indicator for use in apparatus which includes a rotary member whose direction of rotation is determined by a command signal, the direction indicator providing an indication of the commanded direction just as, or momentarily prior to, the rotary member commences rotation in the commanded direction. A frequency generator generates a signal whose frequency is representative of the actual speed of the rotary member. A speed detector coupled to the frequency generator produces a pulse signal when the speed of the rotary member is less than a predetermined speed. A circuit is responsive to the direction command signal and is actuated by the pulse signal to provide an indicating signal corresponding to the direction of rotation determined by the command signal. The resultant indicating signal corresponds substantially to the actual direction of rotation of the rotary member.

REFERENCES:
patent: 3247456 (1966-04-01), Dokter et al.
patent: 3488571 (1970-01-01), Tamaki
patent: 3531704 (1970-09-01), Uemura et al.
patent: 3728565 (1973-04-01), O'Callaghan
patent: 4091314 (1978-05-01), Johnson

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