Locking midsole and insole assembly
AssigneeSuperfeet Worldwide, Inc.
InventorsEric Paris Hayes, Matthew Warren Gooch, Daniel Wakeland
Life of this patent
Estimating the term…
Abstract
A footwear item includes an insole, an outsole, and a midsole. The insole includes an insole top surface, an insole bottom surface, and an insole sidewall. The outsole includes an outsole top surface and an outsole bottom surface. The midsole is positioned between the insole and the outsole. The midsole is configured to nest onto the top surface of the outsole. In at least the heel region, the midsole includes a strobel upper surface and a strobel sidewall configured to nestingly receive a heel region of the insole. In addition, an interface between the strobel upper surface and the strobel sidewall includes a fillet region configured to support and reduce lateral-medial movement of the insole relative to the midsole.
Claims20
A footwear item comprising:
- an insole having a heel region with a top surface, a bottom surface, and a sidewall, the insole sidewall having a periphery contour;
- and
- a midsole having a toe region and a heel region with a midsole upper surface and a midsole sidewall, the midsole sidewall having an inner surface with a shape that inversely matches the periphery contour of the insole sidewall of the insole heel region prior to receiving the insole, the inversely matched inner surface of the midsole heel region sloping inward from top to bottom, the inversely matched inner surface of the midsole heel region being configured to nestingly receive at least the insole heel region and to laterally lock the insole relative to the midsole, wherein an interface between a heel region of the midsole upper surface and the midsole sidewall is configured to closely receive and support the insole heel region and reduce lateral-medial movement of the insole heel region relative to the midsole.
A footwear item comprising:
- an insole having a heel region with a top surface, a bottom surface, and a sidewall, the insole sidewall having a periphery contour;
- and
- a midsole having a toe region and a heel region, the midsole heel region comprising:
- an upper surface;
- a sidewall that slopes inward from top to bottom;
- and
- an interface between the upper surface and the sidewall, the interface being shaped to inversely match the insole sidewall of the insole heel region, prior to receiving the insole, to nestingly and closely receive a heel region of the insole of the footwear item and to laterally lock the insole of the footwear item relative to the midsole.
A method of making a footwear item, the method comprising:
- making an insole with a heel region having an insole top surface, an insole bottom surface and an insole sidewall, the insole sidewall of the insole heel region having a periphery contour;
- making a midsole with a toe region and a heel region having a midsole upper surface and a midsole sidewall, the midsole sidewall having an inner surface that slopes inward from top to bottom, wherein an interface between the midsole upper surface and the midsole sidewall is shaped to inversely match the periphery contour of the insole sidewall of the insole heel region prior to receiving the insole;
- and
- arranging the insole onto the midsole to nestingly and closely receive the insole heel region in the midsole heel region and to laterally lock the insole heel region relative to the midsole.
Dependencies are inferred from the claim text.