"MAN DOWN" (TILT) SWITCH FOR ALARM TRANSMITTERS
Original Publication Date: 1992-May-01
Included in the Prior Art Database: 2002-Jan-01
This invention provides a position sensitive switch that can be used in h4AN DOWN radio applications. Current switches today use mercury trapped inside a chamber with two conducting probes. This device would eliminate the need for mercury. It would use a specially shaped cavity that under conditions of a tilt from center would cause an electrical open by 4 metallic sphere moving away from a spring loaded con&. (See drawing below).