Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Soc Dappareils Nouveaux Et Doutillages Rationnels
Original Assignee
Soc Dappareils Nouveaux Et Doutillages Rationnels
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Application filed by Soc Dappareils Nouveaux Et Doutillages RationnelsfiledCriticalSoc Dappareils Nouveaux Et Doutillages Rationnels
Priority to ES223559ApriorityCriticalpatent/ES223559A3/en
Publication of ES223559A3publicationCriticalpatent/ES223559A3/en
Measurement Of Mechanical Vibrations Or Ultrasonic Waves
(AREA)
Abstract
An improved sound warning device for vehicles, characterized in that it essentially comprises a vibrating membrane which is located in a plane substantially perpendicular to the axis of the vehicle and a spiral acoustic duct, comprised in a plane parallel to that of the membrane, one end of which communicates with said membrane, there being an outlet that is located in the prolongation of said spiral conduit and whose axis is substantially perpendicular to the plane containing the acoustic conduit, so that the other end of the said conduit that is opposite to that communicates with the membrane, is attached to the aforementioned exit mouth, by means of a link elbow. (Machine-translation by Google Translate, not legally binding)
ES223559A1955-09-181955-09-18A perfect type sound warning device for vehicles (Machine-translation by Google Translate, not legally binding)
ExpiredES223559A3
(en)