Treadle alarm system

Details Treadle alarm system Treadle alarm system

1979-05-24

1981-01-13

Swann, III, Glen R.

Electricity: circuit makers and breakers

Multiple circuit control

Pivoted contact

200 6193, 200 86R, 340541, G08B 1310

Patent

active

042452198

ABSTRACT:
An alarm system embodied in a treadle pad is biased open and can be closed by the application of pressure on the pad or by the removal of weight from it in another mode. Closing of the alarm switch relays an electrical signal through a control unit to actuate a d.c. powered audible or visual signal. The device has many practical applications and features simplicity and economy.

REFERENCES:
patent: 918413 (1909-04-01), Anderson, Jr.
patent: 2783327 (1957-02-01), Luckey
patent: 4080519 (1978-03-01), Michalson

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