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US 8,984,773 B2Granted
Footwear outsole
AssigneeSR Holdings, LLC
InventorsKevin Crowley, II, David M. Nau, James Cheney, Nicholas W. Wong
Life of this patent
Estimating the term…
Abstract
An outsole for an article of footwear. The outsole includes an outsole body having a ground contact surface and defining grooves having a sinusoidal path along the ground contact surface. The grooves are arranged to provide an edge density of between about 40 mm/cm2 and about 200 mm/cm2 and a surface contact ratio of between about 40% and about 95%.
Claims44
An outsole for an article of footwear, the outsole comprising:
- an outsole body having a ground contact surface and defining adjacent grooves having a sinusoidal path along the ground contact surface, the adjacent grooves having the sinusoidal path extending from a lateral side of the outsole body toward a medial side of the outsole body;
- wherein the grooves are arranged to provide an edge density of between about 40 mm/cm2 and about 200 mm/cm2 and a surface contact ratio of between about 40% and about 95%;
- wherein each of the adjacent grooves having the sinusoidal path are intersected by a plurality of branch grooves, the branch grooves being transverse to the adjacent grooves having the sinusoidal path, the branch grooves extending in a direction that is at least one of parallel to, and between 1° and 45° with respect to, a longitudinal axis of the outsole body;
- and
- wherein the outsole body is constructed from a material selected from the group consisting of:
- a rubber having a durometer of between about 45 Shore A and about 65 Shore A;
- a rubber having a minimum coefficient of friction of about 0.9 and a durometer of between about 50 Shore A and about 65 Shore A;
- a rubber having a minimum coefficient of friction of about 1.1 and a durometer of between about 50 Shore A and about 65 Shore A;
- and combinations thereof.
6 more elements
An outsole for an article of footwear, the outsole comprising:
- an outsole body having a ground contact surface and defining adjacent grooves having a sinusoidal path along the ground contact surface, the outsole body defining a plurality of branch grooves intersecting the adjacent grooves having the sinusoidal path, the branch grooves being transverse to the adjacent grooves having the sinusoidal path;
- wherein the adjacent grooves having the sinusoidal path define a sinusoidal groove path along the ground contact surface having an amplitude of about 5 mm and a frequency of about 6.3 mm;
- wherein the adjacent grooves having the sinusoidal path extend from a lateral side of the outsole body toward a medial side of the outsole body, and
- wherein the outsole body is constructed from a material selected from the group consisting of:
- a rubber having a durometer of between about 45 Shore A and about 65 Shore A;
- a rubber having a minimum coefficient of friction of about 0.9 and a durometer of between about 50 Shore A and about 65 Shore A;
- a rubber having a minimum coefficient of friction of about 1.1 and a durometer of between about 50 Shore A and about 65 Shore A;
- and combinations thereof.
5 more elements
An outsole for an article of footwear, the outsole comprising:
- an outsole body having lateral and medial portions and a ground contact surface, the outsole defining a longitudinal axis along a walking direction and perpendicular transverse axis, the ground contact surface having
- a first tread region disposed on the lateral outsole body portion near a lateral periphery of the outsole,
- a second tread region disposed on the medial outsole body portion near a medial periphery of the outsole, and
- a third tread region disposed between the first and second tread regions in at least a ground striking portion of the outsole;
- wherein the first and second tread regions define grooves having a sinusoidal path along the ground contact surface with an axis of propagation substantially parallel to the longitudinal axis of the outsole, adjacent grooves offset from each other along the transverse axis by a first offset distance;
- wherein at least some adjacent grooves of the first and second tread regions intersect each other periodically along respective sinusoidal paths of the adjacent grooves;
- wherein the third tread region defines grooves having a sinusoidal path along the ground contact surface with an axis of propagation substantially parallel to the transverse axis of the outsole, adjacent grooves offset from each other along the longitudinal axis by a second offset distance and are intersected by at least one branch groove that is transverse to the adjacent grooves having the sinusoidal path;
- and
- wherein the outsole body is constructed from a material selected from the group consisting of:
- a rubber having a durometer of between about 45 Shore A and about 65 Shore A;
- a rubber having a minimum coefficient of friction of about 0.9 and a durometer of between about 50 Shore A and about 65 Shore A;
- a rubber having a minimum coefficient of friction of about 1.1 and a durometer of between about 50 Shore A and about 65 Shore A;
- and combinations thereof.
10 more elements
Dependencies are inferred from the claim text.