Other

Cooper Technologies Company

Wheelock, Inc.

Mars International, Inc.

David Salgueiro

Joseph Kosich

Geoffrey M Engelstein

Ralph Giffone

Joseph Rudy Keller

Mohamed Abdelhafez

Dominic D'Souza

Andrew Lindsay

Victor E Cappetta, Jr

An optical safety beam method and system. A transmitter periodically sends bursts of light pulses with varying strengths. The receiver analyzes the received light pulses to automatically adjust its sensitivity and to detect when the light path is partially obstructed even when there are stray light pulse reflections that reach the receiver.

Infrared safety beam system

One embodiment of a method for activating a stimulus on a notification device includes encoding an instruction to activate the stimulus in a voltage dropout pulse of a synchronization protocol and sending the synchronization protocol, including the voltage dropout pulse, over a single two wire circuit to which a fire notification device and a mass notification device are coupled, where the notification device is the fire notification device or the mass notification device.

Method and apparatus for activating and controlling fire and mass notification visual devices

The present invention relates to an apparatus and concomitant method for providing a splitter in a notification system. More specifically, the present invention provides a splitter, e.g., between an audio power booster and at least one notification appliance in a supervised emergency voice evacuation system.

Method and apparatus for providing a splitter in a notification system

A method and apparatus for providing a volume control with DC supervision in a voice evacuation system are disclosed. In one embodiment, the apparatus is a volume control comprising a first input interface for receiving an audio signal, a first output interface for forwarding said audio signal to at least one audio device, and a second input interface for receiving an alarm signal. The apparatus also comprises a switch having a plurality of nodes, wherein at least one of the plurality of nodes is an unlabeled node, wherein the switch is in communication with the first input interface and the first output interface for controlling a volume of the audio signal that is sent to the at least one audio device. The apparatus also comprises a filter that is coupled to the unlabeled node of the switch.

Method and apparatus for providing volume control with DC supervision

In one embodiment, the present invention is a method and apparatus for ground fault detection. One embodiment of a method for diagnosing a ground fault in a notification appliance circuit comprising a plurality of field wiring connections includes individually testing each of the plurality of field wiring connections until a source of the ground fault is detected and outputting a signal identifying the source of the ground fault.

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Cranford, NJ, United States of America

David Salgueiro