Radio signal safety facilities for controlling the operation of

Details Radio signal safety facilities for controlling the operation of Radio signal safety facilities for controlling the operation of

1978-02-21

1980-05-27

Hix, L. T.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307117, 307119, 192131R, G05B 903

Patent

active

042052394

ABSTRACT:
A two-hand safety system utilizing an operator's skin resistance is provided to control the operation of a work fabricating tool. An operator must place both hands on a pair of spaced electrodes in order to initiate operation of a radio digital signal generator which transmits a digital signal to a receiver. The receipt of the digital signal in conjunction with a predetermined positioning of a freely slidable work holder energize a circuit to control the operation of the work fabricating tool.

REFERENCES:
patent: 3302492 (1967-02-01), Weidig
patent: 3538799 (1970-11-01), Orlando
patent: 3588867 (1971-06-01), Harris
patent: 3706008 (1972-12-01), Kremer
patent: 3784842 (1974-01-01), Kremer
patent: 3787732 (1974-01-01), Larsen
patent: 3909625 (1975-09-01), Golglazler
patent: 3953770 (1976-04-01), Hayashu
patent: 4029996 (1977-06-01), Miffitt
patent: 4123630 (1978-10-01), MacIntyre

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