Patent ID: 7287340

Claim:
A shoe sole unit comprising, One or more displacement members located on the bottom of the shoe and extending downward from the lower surface of the shoe, wherein each displacement member has a displacement point located between one-quarter and one half of the distance between the front of the toe section and the back of the heel section of the shoe sole and located vertically at the lowest point on the displacement member on the perpendicular to a first imaginary line passing through the point on the upper interior surface of the plantar surface of the shoe sole located on the medial side of the shoe sole between 25% and 40% of the length of the shoe sole from the front of the shoe sole and the point located on the upper interior surface of the plantar surface of the shoe sole located at a point 75% to 95% of the length of the shoe sole from the front of the shoe sole, wherein the number of displacement points is two, one on the medial side and one on the lateral side of the shoe sole, and wherein the angle between the second and third lines is less than the angle between the third line and a fourth imaginary line passing through the point on the upper interior surface of the plantar surface of the shoe sole located at a point 6% of the length of the shoe sole from the front of the shoe sole and the point on the of the lateral side of the shoe sole located on the upper interior surface of the plantar surface at a point 33% of the length of the shoe sole from the front of the shoe sole, and less than the angle between the third line and a fifth imaginary line parallel to the first line and passing through the displacement point.