Self-gapping optical encoder

Details Self-gapping optical encoder Self-gapping optical encoder

1987-02-27

1988-12-27

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250239, G01D 534

Patent

active

047942509

ABSTRACT:
A modular optical encoder includes a housing, a rotatable cam-loaded cover, an emitter/detector module and a code wheel which is positionable upon the shaft of a motor. The code wheel is positioned automatically against the cover during attachment of the encoder to the motor to set the desired emitter and detector gaps. Once the code wheel is locked to the shaft, the cover may be rotated to disengage the cams and followers so that the code wheel is free to turn with the motor shaft.

REFERENCES:
patent: 4338517 (1982-07-01), Perrine
patent: 4475034 (1984-10-01), Maddox et al.
patent: 4556792 (1985-12-01), Kano et al.
patent: 4652748 (1987-03-01), Siraky et al.

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