Precision zero-home locator

Details Precision zero-home locator Precision zero-home locator

1983-10-31

1986-07-15

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250237R, G01D 534

Patent

active

046008349

ABSTRACT:
A zero-home locator includes a fixed phototransistor switch and a moveable actuator including two symmetrical, opposed wedges, each wedge defining a point at which switching occurs. The zero-home location is the average of the positions of the points defined by the wedges.

REFERENCES:
patent: 3159750 (1964-12-01), Kazan
patent: 3193686 (1965-07-01), Heinz
patent: 3399347 (1968-08-01), Martens
patent: 3414730 (1968-12-01), Nicolas
patent: 3544801 (1970-12-01), Dyck
patent: 3689163 (1972-09-01), Glorioso
patent: 3775617 (1973-11-01), Dubauskas
patent: 3885877 (1975-05-01), Horwath
patent: 4103155 (1978-07-01), Clark
patent: 4315201 (1982-02-01), Suzuki et al.
patent: 4320293 (1982-03-01), Guretzky

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