发明名称 Weight selection methods and apparatus
摘要 An exercise dumbbell has at least one weight selector that is rotatable into engagement with various combination of weights at opposite ends of the handle. On a first embodiment, first and second weight selectors are rotatably mounted on opposite ends of a bar for independent rotation relative to the handle. On a second embodiment, first and second weight selectors are keyed to a common bar and rotated together therewith relative to the handle.
申请公布号 US2003199368(A1) 申请公布日期 2003.10.23
申请号 US20020127049 申请日期 2002.04.18
申请人 KRULL MARK A. 发明人 KRULL MARK A.
分类号 A63B21/072;A63B21/075;(IPC1-7):A63B21/072 主分类号 A63B21/072
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