Apparatus for protecting persons entering the zone of danger of

Details Apparatus for protecting persons entering the zone of danger of Apparatus for protecting persons entering the zone of danger of

1988-09-19

1989-12-12

Eisenzopf, Reinhard J.

Communications: electrical

Condition responsive indicating system

Specific condition

G08B 1326

Patent

active

048870706

ABSTRACT:
A sensor (14) is carried by a moving element (7) which may be a cantilevered arm of a textile fiber opening machine (1) having a movable tower (2) on which cantilevered arm (7) is carried. Sensor (14) includes a bar in which an electrical current generated from (17) and sensed by (18) is conducted to set up an electromagnetic field around the moving element in a danger zone. Changes in the field caused by intrusion of the zone by a person are detected to cut off machine operation.

REFERENCES:
patent: 4232286 (1980-11-01), Voll
patent: 4280580 (1981-07-01), Wojcik
patent: 4661797 (1987-04-01), Schmall
patent: 4757450 (1988-07-01), Etoh
patent: 4802096 (1989-01-01), Hainsworth et al.

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