Overhead door cable safety device

Details Overhead door cable safety device Overhead door cable safety device

1978-06-26

1980-07-15

Scott, James R.

Electricity: circuit makers and breakers

Special application

Running length, web or strand actuated

200 6118, 200 47, 254271, B65H 2514, B66D 148

Patent

active

042130190

ABSTRACT:
An overhead door cable safety device for suspending adjacent a cable drum on an overhead door assembly and monitoring the condition and location of the cable on the drum. The cable when becoming loose on the cable drum or frayed contacting the cable safety device, which in turn closes an electrical switch for signalling the operator of the overhead door that the cable on the cable drum is in need of repair.

REFERENCES:
patent: 2348987 (1944-05-01), Lock
patent: 2754382 (1956-07-01), Francis
patent: 3208729 (1965-09-01), Townsen
patent: 3681554 (1972-08-01), Arthur

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