Back to results
US 5,138,776 AGranted
Sports shoe
OwnerShalom Levininventor
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
OwnerShalom Levininventor
Estimating the term…
The sports shoe according to the invention has a highly elastic heel which reduces the shock on the foot during running and jogging. The heel which is made of a resilient, elastic material is in the shape of a strip which is arched in dowward direction and connected to the sole at its front end while forming a longitudinal cavity with the sole which is open towards the rear end of the shoe. A spring composed of two leaves which are connected at one end and unconnected at the other end of the spring, are inserted into the cavity with the connected ends positioned at the front end of the cavity and with the unconnected ends close to the rear end of the heel, whereby the upper of the two leaves is connected to the sole and the lower, strongly bent leaf to the arched heal strip. The rear end of the lower leaf is free to slide or to roll along the rear portion of the upper leaf in accordance with the pressure applied to the heel surface during jogging or running, thereby largely increasing the range of compression and decompression of the heel strip resulting in more comfort of the wearer.
A sports shoe comprising a front portion and a rear portion, an upper, a sole and a highly elastic heel, said heel including a relatively thick heel strip of a flexible and resilient material having a tread surface and an upper surface, with a front end of the upper surface being attached to said sole while the remainder of said upper surface is separated from said sole at said rear portion by a lengthwise extending cavity, said heel strip being curved in a concave manner in an unloaded state and supported by a leaf spring bent coextensively with the upper surface of said heel, said heel strip together with said spring being adapted to be flattened and stretched in a rearward direction by a load exerted by the weight of a person wearing said shoe, while running or jumping, and to be returned into its curved shape immediately upon release of the load.
Dependencies are inferred from the claim text.