发明名称 Audible-physical coordination racket
摘要 A table tennis racket having one or more whistles positioned thereon for creating a sound in response to the speed of the swing of the racket. The whistles are adjustably attached to the racket head for producing a tone varying according to the angle of the head relative to the given travel direction, whereby a person can practice to control speed and spin consistency of swing. The whistles are generally positioned on the periphery of the playing surface of the racket, although extensions can be provided to hold the whistles. A person uses the racket by swinging it during a practice game and listening for a consistent tone to assure a consistent speed.
申请公布号 US4635935(A) 申请公布日期 1987.01.13
申请号 US19840685470 申请日期 1984.12.24
申请人 KANE, JEROME 发明人 KANE, JEROME
分类号 A63B59/04;A63B69/38;(IPC1-7):A63B69/40 主分类号 A63B59/04
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