US 12,376,643 B2
Footwear heel retention device
Lindsey K. Andreasen, Beaverton, OR (US); Evan Perkins, Portland, OR (US); and Juliana Sagat, Beaverton, OR (US)
Assigned to NIKE, Inc.
Filed by NIKE, Inc., Beaverton, OR (US)
Filed on Oct. 4, 2022, as Appl. No. 17/959,764.
Claims priority of provisional application 63/252,922, filed on Oct. 6, 2021.
Prior Publication US 2023/0107425 A1, Apr. 6, 2023
Int. Cl. A43B 11/00 (2006.01); A43B 3/24 (2006.01); A43B 13/28 (2006.01); A43B 21/28 (2006.01); A43B 21/32 (2006.01)
CPC A43B 11/00 (2013.01) [A43B 13/28 (2013.01); A43B 21/28 (2013.01); A43B 3/242 (2013.01); A43B 21/32 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An article of footwear comprising:
a sole structure;
an upper attached to the sole structure and including an opening providing access to an interior void of the upper;
a support attached to the upper at a posterior end of the upper and including:
a first rail disposed adjacent to the opening of the upper and a second rail extending between the first rail and the sole structure and continuously along the posterior end from a medial side of the upper to a lateral side of the upper,
a first receptacle extending through the support such that the first receptacle starts and terminates on the medial side of the upper, and
a second receptacle extending through the support such that the second receptacle starts and terminates on the lateral side of the upper; and
a bladder disposed in each of the first receptacle and the second receptacle between the first rail and the second rail and extending through the support.