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Akzo NV
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Algemene Kunstzijde Unie NV
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Application filed by Algemene Kunstzijde Unie NVfiledCriticalAlgemene Kunstzijde Unie NV
Publication of ES207708A1publicationCriticalpatent/ES207708A1/en
Investigating, Analyzing Materials By Fluorescence Or Luminescence
(AREA)
Abstract
An electrical signaling device provided with at least one attention signaling device and at least one optical location signaling device with the attention signaling device connected in such a way that it can be switched off independently of or from each of the devices of optical localization signaling and is immediately ready for a new alarm characterized in that in the operating circuit of the attention signaling apparatus a discharge tube is provided whose grid in the normal operating condition has such negative polarization that it is not conductive and in the case of a disturbance in a circuit of one of the location signaling devices becomes conductive due to the control potential applied to the pipe grid, providing a resistance with a high negative temperature coefficient in the signal circuit whose terminal connection is with ected with the cathode of the discharge tube. (Machine-translation by Google Translate, not legally binding)
ES0207708A1952-03-051953-02-12An electrical signaling device (Machine-translation by Google Translate, not legally binding)
ExpiredES207708A1
(en)