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Priority to ES0046292UpriorityCriticalpatent/ES46292Y/en
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Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups
(AREA)
Abstract
New electric sound apparatus, characterized by an electromagnet whose magnetic circuit is closed by a core constituted by magnetic plate located above, separated at a small distance and movable, joined to a metal membrane, by means of a cylindrical piece or pillar, which is fixed and tight pressed against the flange of the support box, carrying this membrane separated by a supplement located in the center or a wavy disc that is fixed by means of a bolt against the lower pillar of the same, constituting a resonance chamber space free that remains between the membrane and the disk mentioned. Because when the nucleus is attracted by the excitation of the electromagnet, it carries with it the membrane deforming it, causing it to produce an acoustic vibration. (Machine-translation by Google Translate, not legally binding)
ES0046292U1955-02-081955-02-08
New electric sound apparatus
ExpiredES46292Y
(en)
Improvements in the manufacture of intermittent alarm buzzers for motorcycles with magnetic plate (Machine-translation by Google Translate, not legally binding)