Rotary switch with reflector coded actuator drum

Details Rotary switch with reflector coded actuator drum Rotary switch with reflector coded actuator drum

1984-12-19

1987-01-06

LaRoche, Eugene R.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250229, G01D 534

Patent

active

046348611

ABSTRACT:
A multi-position rotary switch comprises an actuator drum divided into a plurality of different n-bit codes where each bit is represented by a reflective area or a non-reflective area on the drum. The drum is radiated by a suitable emitter and radiation reflected off of the drum by reflective bits is detected by a plurality of radiation detectors. The drum is rotatable to bring the different n-bit codes into view of the radiation detectors. Each different n-bit code detected by the radiation detectors is indicative of a particular switch position.

REFERENCES:
patent: 3603982 (1971-09-01), Patti
patent: 3697762 (1972-10-01), Kurtz
patent: 3886544 (1975-05-01), Narodny
patent: 4045667 (1977-08-01), Hanson
patent: 4123653 (1978-10-01), Bovio
patent: 4201911 (1980-05-01), Dering
patent: 4224604 (1980-09-01), Angst
patent: 4340813 (1982-07-01), Sauer
patent: 4521875 (1985-06-01), Harrington
patent: 4555625 (1985-11-01), Mosier et al.

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