Custom article of footwear and method of making the same

  • US 8,959,797 B2
  • Filed: 05/06/2012
  • Issued: 02/24/2015
  • Est. Priority Date: 03/10/2000
  • Status: Expired due to Fees
First Claim
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1. An article of footwear comprising an anterior side, a posterior side, a medial side, a lateral side, a superior side, an inferior side, a rearfoot area, a midfoot area, a forefoot area, an upper comprising a bottom side, and a spring element, said spring element comprising a superior spring element comprising an integral heel counter and a plurality of inferior spring elements projecting downwardly and rearwardly from said superior spring element, said superior spring element extending substantially between said anterior side and said posterior side of said article of footwear and being affixed to said bottom side of said upper, said plurality of inferior spring elements each comprising an anteriormost side, a posteriormost side, a medialmost side, a lateralmost side, an anterior tangent point, a top surface comprising a top curved configuration, a bottom surface comprising a bottom curved configuration and an inferiormost point and a geometric shape, said plurality of inferior spring elements comprising a first inferior spring element located on said medial side and being positioned across from at least one other of said plurality of inferior spring elements comprising a second inferior spring element located on said lateral side and being separated by a void space located therebetween, and each of said first inferior spring element and said second inferior spring element comprising a tapered configuration between said anteriormost side and said posteriormost side and at least one of said first inferior spring element and said second inferior spring element comprising a tapered configuration between said medialmost side and said lateralmost side, said first inferior spring element and said second inferior spring element each being configured to provide a vertical elevation of at least 10 mm and a horizontal distance in the range between 30-63.5 mm between said anterior tangent point and said inferiormost point and each of said first inferior spring element and said second inferior spring element being located in at least one of said midfoot area and said rearfoot area, said midfoot area and said rearfoot area therefore both being elevated and capable of deflection, said first inferior spring element located on said medial side comprising a first top surface comprising a first too curved configuration and a first bottom surface comprising a first bottom curved configuration and a first geometric shape, and said second inferior spring element located on said lateral side comprising a second top surface comprising a second top curved configuration and a second bottom surface comprising a second bottom curved configuration and a second geometric shape, said first too curved configuration of said first inferior spring element being similar to said second top curved configuration of said second inferior spring element, and said first geometric shape of said first inferior spring element being different and asymmetric relative to said second geometric shape of said second inferior spring element, said plurality of inferior spring elements comprising a third inferior spring element located in said forefoot area comprising a third top surface comprising a third top curved configuration and a third bottom surface comprising a third bottom curved configuration and a third geometric shape, said third top curved configuration being different from both said first top curved configuration and said second top curved configuration, said third bottom surface substantially comprising a convex third bottom curved configuration and said third geometric shape being different from both said first geometric shape and said second geometric shape.

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