发明名称 |
Exercise hoop having a counter |
摘要 |
The device comprises a hoop with a hollow passage having a weight located within the hollow passage, such that the weight circulates in the hollow passage as the hoop is rhythmically rotated. The device also includes a counter capable of counting and displaying the weight's revolutions around the hoop and a sensor for determining and displaying the speed of the weight.
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申请公布号 |
US4480831(A) |
申请公布日期 |
1984.11.06 |
申请号 |
US19820357584 |
申请日期 |
1982.03.12 |
申请人 |
MUELLER-DEINHARDT, FRIEDHELM |
发明人 |
MUELLER-DEINHARDT, FRIEDHELM |
分类号 |
A63B21/06;A63B22/18;(IPC1-7):A63B19/00;A63B23/02 |
主分类号 |
A63B21/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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