Personnel alarm circuit for industrial machinery

Details Personnel alarm circuit for industrial machinery Personnel alarm circuit for industrial machinery

1979-09-20

1981-05-05

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

192129A, 3071914, 3403091, 361 29, G08B 2100

Patent

active

042662214

ABSTRACT:
An alarm circuit is interlocked with the start circuit of power driven industrial machinery such as a coal tipple so that before the machinery can be started, an alarm must be energized for a predetermined time to alert personnel that the machine is about to start. In the event that the machinery is not started within a predetermined time after termination of the alarm, or in the event that the alarm has not actually sounded, the whole cycle must be repeated.

REFERENCES:
patent: 3631447 (1971-12-01), Sulat et al.
patent: 4110742 (1978-08-01), Hawkins

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