Detecting element for a control device for invalids

Details Detecting element for a control device for invalids Detecting element for a control device for invalids

1975-12-01

1978-01-24

Gill, James J.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

361195, H01H 4700

Patent

active

040707008

ABSTRACT:
This invention relates to a detecting element for a control device for invalids which detects without any physical contact the presence or the absence or even the displacement of a moving member within a sensitivity range in space, the size of the region in which this movement can be detected being large with regard to said moving member.

REFERENCES:
patent: 2946931 (1960-07-01), Durbin
patent: 3086146 (1963-04-01), Edler
patent: 3799198 (1974-03-01), Kijimoto
patent: 3838408 (1974-09-01), McMaster
patent: 3851301 (1974-11-01), Demers et al.

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