Variable friction sole for bowling and other shoes
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
May 17, 2007
app pub date -
Jun 2, 2006
filing date -
Nov 11, 2005
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The effective friction of a shoe is adjusted by changing the angle of a portion of the sole, relative to the shoe centerline. In one embodiment, the heel is effectively hinged and an adjustment device is spaced from the hinge axis, whereby the wearer can hold the shoe in one hand and manually adjust an actuator connected to a drive member that increases or decreases the angle of the hinge. The hinge axis can be perpendicular to the centerline, either in the front of the heel with the drive member embedded in the back of the heel, or in the back of the heel, with the drive member embedded in the front of the heel. Angulation can be effected in the foresole, about an axis perpendicular to the shoe centerline, or about an axis that is parallel to but offset from the centerline.
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