发明名称 Electronic acoustic signal emitter
摘要 An electronic acoustic signal emitter which includes a piezo-ceramic plate on a metal membrane, and with a circuit board which supports the electronic components. A ring-shaped conductive path with a diameter which is generally as equally large as the metal membrane is arranged on the circuit board in addition to the conductive paths for the components and is electrically connected therewith, which serves as a conductive path and carrier for the metal membrane.
申请公布号 US4841493(A) 申请公布日期 1989.06.20
申请号 US19880184016 申请日期 1988.04.20
申请人 DIEHL GMBH & CO. 发明人 MEISNER, ALFRED;POTTHOF, ERWIN;FLUHRER, HENRY
分类号 H04R17/00;G10K9/122 主分类号 H04R17/00
代理机构 代理人
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