发明名称 Exercise device
摘要 An exercise device for strengthening the muscles of the upper leg and the buttocks region. Two foot platforms are pivoted off center in relation to the user's foot. The heels of each foot can be brought together under tension by an elastic cord between the toe regions of the foot platforms. Included with the exercise device is a tension adjusting mechanism that allows the use to change the tension involved in bringing the heels together. Also included with the exercise device is a heel riser that raises up the heels of the feet when the heels are brought together.
申请公布号 US4998720(A) 申请公布日期 1991.03.12
申请号 US19900487129 申请日期 1990.03.02
申请人 KIM, INSOP 发明人 KIM, INSOP
分类号 A63B21/015;A63B22/14;A63B23/00;A63B23/035 主分类号 A63B21/015
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