发明名称 MUSICAL INSTRUMENT WITH VARIABLE AMPLITUDE
摘要 An electronic organ with tone generators that are coupled to a loudspeaker by depressing key-operated switches, wherein each switch provides a resistance dependent upon the pressure applied to the key so that the musician can control the loudness, attack and decay of a musical note. Each switch includes a highly compressible resistance member whose resistance changes greatly with degree of compression, a first conductor which supports an upper end of the resistance member, and a resilient second conductor normally spaced below the resistance member. Manual depression of a key deflects the lower switch conductor up against the resistance member and compresses it in an amount dependent upon the pressure applied to the key. The fact that the resistance member initially has an extremely high resistance when the first contact touches it, prevents the production of a "popping" sound as the key is depressed.
申请公布号 US3657459(A) 申请公布日期 1972.04.18
申请号 USD3657459 申请日期 1970.11.02
申请人 MATTEL INC. 发明人 ROBERT L. PETERSON;PAUL R. WIEMAN
分类号 G10H1/055;(IPC1-7):G10H1/00 主分类号 G10H1/055
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