Hands-free molded shoe
A HANDS-FREE MOLDED SHOE may include a uniformly molded slip-on shoe having features to facilitate hands-free wearing. Such features may include use of a greater hardness plastic in a heel counter portion of the shoe and lesser hardness plastic in an upper and/or sole portion of the shoe. The heel counter portion may be configured to deform into a new configuration under the load of a user's foot as it enters a shoe opening, and return to its original configuration once the foot is inside the show. The heel counter portion may further have an S-wave shaped vertical cross section at a rearmost position. Methods of manufacture of a HFMS may include the use of an upper insert and a sole insert as well as a heel insert having a securing mechanism to secure the heel insert to a core portion of a shoe mold.
1 . An article of footwear, comprising:
a sole structure;
a heel cup uniformly molded with the sole structure, and extending from the sole structure to at least a portion of the rear heel collar of an upper;
the heel cup uniformly molded with an upper portion, midportion, and lower portion wherein the upper portion has a smaller mediolateral length than the midportion, and the midportion and lower portion form a concave structure configured to receive the heel;
the upper portion having a first configuration; the upper portion capable of distorting into a second configuration under a load of a user's foot when the user is donning the footwear; and
wherein in the second configuration at least part of the upper portion is lowered relative to the first configuration; the upper portion capable of returning to the first configuration after the load of user's foot is removed.
2 . The article of footwear of claim 1 , further comprising:
an upper, wherein
the upper defines a foot receiving show opening; and
the heel cup and sole structure are uniformly molded with the upper.
3 . The article of footwear of claim 2 , wherein the heel cup is comprised of a first plastic and the upper is comprised of a second plastic, the first plastic having a different hardness than the second plastic.
4 . The article of footwear of claim 2 , wherein the heel cup and sole are comprised of a first plastic and the upper is comprised of mesh fabric.
5 . The article of footwear of claim 1 , wherein the heel cup is comprised of a first plastic and the sole is comprised of a second plastic, the first plastic having a different hardness than the second plastic.
6 . The article of footwear of claim 1 , wherein the midportion defines a peripheral portion and a central portion; the peripheral portion having a first thickness; and
the central portion having a second thickness; the second thickness being less than the first thickness.
7 . The article of footwear of claim 1 , further comprising:
an interior foam layer integrally molded at a back inner wall of the heel cup.
8 . The article of footwear of claim 1 , wherein in a vertical cross-section, the heel cup has an S wave shape.
9 . The article of footwear of claim 8 , wherein in the vertical cross-section, the upper portion has a first thickness in a first location;
wherein in the vertical cross-section, the midportion has a second thickness in a second location;
wherein in the vertical cross-section, the lower portion has a third thickness in a third location;
wherein the second thickness is smaller than at least one of the first thickness and the second thickness.
10 . An article of footwear, comprising:
a uniformly-molded upper, sole, and heel cup;
wherein the heel cup is comprised of a first plastic and the sole or upper is comprised of a second plastic, the first plastic having a different hardness than the second plastic.
11 . The article of footwear of claim 10 , wherein the first plastic has a greater hardness than the second plastic.
12 . The article of footwear of claim 11 , wherein the heel cup is uniformly molded with an upper portion, midportion, and lower portion, wherein the upper portion has a smaller mediolateral length than the midportion, and the midportion and lower portion form a concave structure configured to receive the heel;
wherein the upper portion has a first configuration and is configured to distort into a second configuration under a load of a user's foot when the user is donning the footwear.
13 . The article of footwear of claim 11 , wherein
the upper is uniformly molded with the sole and heel cup.
14 . The article of footwear of claim 12 , wherein in a vertical cross-section, the heel cup has an S wave shape.
15 . The article of footwear of claim 14 , wherein in the vertical cross-section, the upper portion has a first thickness in a first location;
wherein in the vertical cross-section, the midportion has a second thickness in a second location;
wherein in the vertical cross-section, the lower portion has a third thickness in a third location;
wherein the second thickness is smaller than at least one of the first thickness and the second thickness.