发明名称 Arm wrestling device
摘要 An arm wrestling device is disclosed comprising a base, a channel mounted to the base, an arm pivotally mounted to and within said channel, and a hand grip transversely disposed to and attached to said arm and a spring disposed in said channel and mounted at one end to the upper portion of the arm and pivotally mounted at the other end adjacent the base, whereby the user grips and pulls the hand grip causing pivoting of the arm and pivoting and extension of the spring. The spring means is mounted in a retractable cylinder and further comprises an air brake to counter the retraction of the spring in the event of sudden release of the grip by the user. The spring is within a retractably extensible cylinder. The cylinder has an air brake to counter retraction of the spring upon release of the hand grip.
申请公布号 US4129297(A) 申请公布日期 1978.12.12
申请号 US19760658721 申请日期 1976.06.14
申请人 DOLAN, JOHN W. 发明人 DOLAN, JOHN W.
分类号 A63B21/008;A63B21/04;A63B23/12;(IPC1-7):A63B5/00 主分类号 A63B21/008
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