发明名称 Portable stretching device receivable as a case
摘要 An exercise device for conducting push and pull type exercises includes a non-track slippery member for being moved toward and away from a stationery member. A spring biasing member may bias the slipper member toward the stationery member, and may couple the members together when the members are superposed together to form a compact case structure. The spring biasing member preferably includes an endless loop structure received in grooves of the members. The stationery member has one or more anti-slip pads, and the slippery member has a slippery layer.
申请公布号 US2004102294(A1) 申请公布日期 2004.05.27
申请号 US20020303534 申请日期 2002.11.22
申请人 CHEN PAUL 发明人 CHEN PAUL
分类号 A63B21/04;A63B21/055;A63B22/20;(IPC1-7):A63B21/02 主分类号 A63B21/04
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