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.)
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Scully Signal Co
Original Assignee
Scully Signal Co
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Publication date
Application filed by Scully Signal CofiledCriticalScully Signal Co
Priority to ES0312792ApriorityCriticalpatent/ES312792A3/en
Publication of ES312792A3publicationCriticalpatent/ES312792A3/en
An acoustic signaling device intended to be mounted at the end of a communication tube with the atmosphere attached to a reservoir, said device comprising a tubular housing having an outer diameter at its upper end smaller than the outer diameter of said tube end. communication with the atmosphere, but greater than the inner diameter of said end of the communication tube with the atmosphere, said housing having side openings, closing means capable of yielding inside said housing that normally closes said openings, but destined to yield to an open position in response to an external fluid pressure, a whistle unit in said housing below the level of said openings, and unidirectional clutch means capable of yielding supported by said housing above its upper end and normally of greater length than the internal diameter of said communication tube n with the atmosphere. (Machine-translation by Google Translate, not legally binding)
ES0312792A1965-05-111965-05-11An acoustic signaling device. (Machine-translation by Google Translate, not legally binding)
ExpiredES312792A3
(en)