发明名称 Wrist exercise and strengthening device
摘要 A device is provided for exercising and strengthening the human wrist, which comprises a concave trough with two parallel spaced members projecting from one end thereof and a grip rotatably mounted on the elongated member. Springs provide a force which rotates the grip away from the longitudinal axis of the concave trough. The device fits on the human forearm directly above the wrist and provides wrist strengthening exercises for the user by means of the grip being biased by the force of the springs against the flexing of the wrist.
申请公布号 US4039183(A) 申请公布日期 1977.08.02
申请号 US19760679081 申请日期 1976.04.21
申请人 RITSHYO KOGYO KABUSHIKI KAISHA 发明人 SAKURADA, HIROSHI
分类号 A63B23/14;(IPC1-7):A63B21/00;A63B21/18 主分类号 A63B23/14
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