Adjustable spring device for walking and running
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United States of America Patent
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Aug 18, 2015
Grant Date -
Jun 26, 2014
app pub date -
Dec 26, 2012
filing date -
Oct 15, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
An adjustable spring device for Walking and running is attachable to the user's footwear. The device includes an upper sole coupled to the footwear, a lower elastic sole, and a support bracket configured as a curvilinear confined band that includes a flat top fastened to the upper sole, and a concaved bottom fastened to the lower sole. The lower sole is furnished with a plurality of slots, preferably straight-lined, and aligned at a predetermined angle, cut from the periphery towards the longitudinal axis of lower sole and ending at predetermined points thereof. The slots are preferably so arranged that, if the predetermined points are linked by four straight lines extending therethrough, the four lines will form a rhomb-shaped figure having two vertexes positioned at the front and the rear ends of the lower sole. Means for variable adjustment of the support bracket are provided, creating comfortable energy exchange conditions.
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