发明名称 RACKET FOR STRIKING A BALL
摘要 A racket for striking a ball, in particular a tennis racket includes a closed inner stringed frame which is at least partly enclosed by an outer support frame, with both frames being hingedly connected by at least two joints such that a local rotation of both frames relative to each other is permitted at the points of articulation. The joints are arranged relative to each other in such a manner that the inner frame is prevented from carrying out a rigid-body motion relative to the outer support frame and that both frames are prevented from carrying out a translational movement perpendicular to each other perpendicular to the racket plane.
申请公布号 US5178388(A) 申请公布日期 1993.01.12
申请号 US19910695922 申请日期 1991.05.06
申请人 SCHLENKER, ECKARD 发明人 SCHLENKER, ECKARD
分类号 A63B49/02;A63B49/10;A63B59/00 主分类号 A63B49/02
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