Keyboard device of electronic musical instrument

专利名称：Keyboard device of electronic musical

instrument

发明人：Shinji Kumano,Motoshi Murasaki申请号：US06/571913申请日：19840117公开号：US04604937A公开日：19860812

摘要：A keyboard device of an electronic musical instrument has a keyboard frame, aplurality of keys which are aligned on the keyboard frame and which are verticallypivotable, a plurality of return springs each of which corresponds to one of the keys andhas one end stopped by the key and the other end stopped by the keyboard frame so asto bias the key toward a nonstruck position, and a plurality of pivot members each ofwhich is disposed on the keyboard frame at an end of a longitudinal axis of the key tocorrespond to one of the keys. The pivot member has a circular surface to be broughtinto slidable contact with a back end portion of the key so as to allow the key to performpivotal movement. The back end portion of the key has a circular surface paired with thecircular surface of the pivot member and is spring-biased against the circular surface ofthe pivot member by means of the return spring.

申请人：NIPPON GAKKI SEIZO KABUSHIKI KAISHA

代理机构：Blakely, Sokoloff, Taylor & Zafmnan

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