General Time Corporation

David E Earls

Edward F Cielaszyk

John D Freeman

C N Nampoothiri

An intruder alarm security device includes a source of fluid under pressure which serves as a medium for oscillating a diaphragm at the throat of a horn to create an audible warning signal. The intruder alarm includes an actuator, a plunger assembly and connecting structure for coupling rotary movement of the actuator to longitudinal movement of the plunger assembly to open communication between the diaphragm and the source of fluid. The or connecting coupling structure includes a lost motion connection so that the plunger assembly is controlled by the actuator only to the point of opening the communication. And, the plunger assembly includes an orifice member for metering the flow of medium to the diaphragm, yet, first is capable of allowing any entrained particulate from a closure of the source to clear the device.

Intruder alarm

An electronic system having a chime and strike program simulating the program of a Westminster clock including an actuating source, a solid state integrated circuit and a loud speaker. The integrated circuit includes a plurality of counters for activating a frequency synthesizer and both tone switching and generating circuits thereby to generate the strike and chime program on the hour and a chime program on the other quarter hours indicative of the time throughout a 24-hour period. The chime program is sequenced by a chime matrix.

Growing community of inventors

Norwalk, CT, United States of America

David E Earls