发明名称 Racket tester
摘要 A racket tester includes a flat plate, a support, a knob attached with a screw rod, an pneumatic cylinder including a piston and a pressure gauge, a base, a ring, an indicia marking, a round rod, a stand, and a weighing unit. By properly associating the above-mentioned members, the racket tester of the present invention is capable of testing the tension of the face of the racket netting, the flex of the racket shaft, and the equilibrium point and the weight of the racket.
申请公布号 US4747314(A) 申请公布日期 1988.05.31
申请号 US19870019055 申请日期 1987.02.26
申请人 HUANG, BEN T. 发明人 HUANG, BEN T.
分类号 A63B51/00;A63B59/00;G01L5/08;G01M1/12;G01M5/00;(IPC1-7):G01L5/08;G01N3/20 主分类号 A63B51/00
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