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Signal GmbH
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Signal GmbH
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Application filed by Signal GmbHfiledCriticalSignal GmbH
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Publication of FR432510ApublicationCriticalpatent/FR432510A/fr
G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
G10K7/00—Sirens
G10K7/02—Sirens in which the sound-producing member is rotated manually or by a motor
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Physics & Mathematics
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Engineering & Computer Science
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Acoustics & Sound
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FR432510D1911-06-241911-07-24Dispositif pour la transmission de signaux acoustiques dans l'eau, au moyen d'une sirène
ExpiredFR432510A
(fr)
Dispositif pour évaluer, au moyen d'ondes sonores réfléchies, la profondeur de la mer ou l'éloignement de navires ou d'obstacles, ainsi que leur direction
Appareil d'accouplement pour les timoneries dépendant de la position du régulateur, pour actionner automatiquement le sifflet d'alarme de la locomotive