Nike, Inc.

Edward C Frederick

Alexander L Gross

John R Robinson

Thomas Derderian

A device for measuring the speed of a person while running along a surface is disclosed. A pressure switch or transducer located in a shoe senses when a foot of the runner is in contact with the surface and produces a foot contact signal having a duration proportional to the time the foot is in contact with the surface. A radio frequency transmitter is coupled to the pressure switch or transducer and transmits the foot contact signal. A radio frequency transmitter receives the foot contact signal transmitted by the frequency transmitter and a microprocessor coupled to the radio frequency receiver calculates, solely from the foot contact signal, an output speed signal representing the speed of the runner. A liquid crystal display coupled to the output of the microprocessor displays the speed of the runner in accordance with the output speed signal.

Device for determining the speed, distance traversed, elapsed time and

An improved sole for use with footwear is disclosed. The sole includes at least one layer of material which is adapted to be attached to an upper of the footwear. A distal flex groove is formed in the sole and is coextensive with a medial metatarsal-phalanges line which extends between the first and second metatarsal-phalanges joints. A proximal flex groove is also formed in the sole and extends substantially parallel to a lateral metatarsal-phalanges line which extends along the second through fifth metatarsal-phalanges joints. The proximal and distal grooves join on another at the medial edge of the sole adjacent the first metatarsal-phalanges joint.

Sole with V-oriented flex grooves

A shock absorbing sole member used in an athletic shoe having an upper and a sole is disclosed. The shock absorbing sole member is comprised of an insert member and elastomeric foam encasing the insert member. The insert member is formed of resilient plastic material and includes a plurality of transversely and longitudinally spaced discrete shock absorbing projections. The elastomeric foam has a low hardness, less than 70 on the Asker C scale.

Growing community of inventors

Kingston, NH, United States of America

Edward C Frederick