发明名称 Crank system assemblies and methods for use thereof
摘要 An exercise apparatus comprises: a frame; a crank system supported by the frame; a right and left foot members supported by the frame; first and second flexible element coupled to the crank system and foot support members such that downward motion of either foot support member causes rotation of the crank system; and a crank offset assembly configured to prevent the crank system from becoming locked at a top dead center location.
申请公布号 US7878947(B1) 申请公布日期 2011.02.01
申请号 US20080116867 申请日期 2008.05.07
申请人 RODGERS JR ROBERT E 发明人 RODGERS, JR. ROBERT E.
分类号 A63B22/04;A63B22/06 主分类号 A63B22/04
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