Elastic resistance exerciser

作者: Jack V. Miller

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摘要: An elastic resistance exerciser comprises an elongated member having a loop formed at each end, tubular handle slidably fit onto of the member, and self-locking slider three holes; with threaded through two holes terminating end in third hole slider; being adjustable along whereby size may be varied by moving no tension on loop, but application to loop. A preferred embodiment provides band flexible material attached approximately center length more than one element.

参考文章(3)
Rowland Alvah Byron, Tow-rope connecter ,(1921)
Wayne Lee, John Richardson, Elastic pull type isotonic/isometric exerciser ,(1975)
John H Richardson, Elastic pull type exerciser ,(1970)