A shock-absorbing shoe using a spring, comprising: a spring for absorbing shock by providing an elastic force; an outsole which constitutes the bottommost sole of a shoe; an upper sole which is fixed to the top of the outsole, has a gap between the heel part thereof and the heel part of the outsole so as to provide a space in which the spring is provided, and is lowed by the weight of a user or raised by the elastic force of the spring; a lower spring seat which is formed on the upper surface of the outsole and supports the lower end part of the spring; an upper spring seat which is formed below the bottom of the upper sole and supports the upper end part of the spring; and a raising and lowering guide for guiding the lowering and raising of the upper sole straightly.

A shock-absorbing shoe using a spring, comprising: a spring for absorbing shock by providing an elastic force; an outsole which constitutes the bottommost sole of a shoe; an upper sole which is fixed to the top of the outsole, has a gap between the heel part thereof and the heel part of the outsole so as to provide a space in which the spring is provided, and is lowed by the weight of a user or raised by the elastic force of the spring; a lower spring seat which is formed on the upper surface of the outsole and supports the lower end part of the spring; an upper spring seat which is formed below the bottom of the upper sole and supports the upper end part of the spring; and a raising and lowering guide for guiding the lowering and raising of the upper sole straightly.

A footwear construction capable of incorporating one to three or more platform layers, or no platform layers at all. The invention comprises a kit including a sneaker member, optionally includable in the final construction first second and third platform members, guide members, optionally in sets of three, suitable for inclusion in a constructed footwear item with one, two or three platform members, and a tread its sole member, optionally replaceable by other types of soles.

An article of footwear includes an upper having an internal volume adapted to receive a foot of a wearer and a sole structure secured to the upper. The sole structure includes a chassis plate provided within the upper, a midsole secured to the chassis plate such that the upper extends between the chassis plate and the midsole, and an outsole tread element attached to a ground facing surface of the midsole.

An article of footwear includes an upper having an internal volume adapted to receive a foot of a wearer and a sole structure secured to the upper. The sole structure includes a chassis plate provided within the upper, a midsole secured to the chassis plate such that the upper extends between the chassis plate and the midsole, and an outsole tread element attached to a ground facing surface of the midsole.

Baseplates for shoes, wherein the baseplate is removably insertable into a shoe upper, and wherein the baseplate includes a substantially planar body, which is configured to provide stability to the shoe upper, and a plurality of tread elements, which are configured to protrude through a respective opening of a plurality of openings in a bottom portion of the shoe upper when the baseplate is removably inserted into the shoe upper, wherein the plurality of tread elements are unitarily formed with the body.

Baseplates for shoes, wherein the baseplate is removably insertable into a shoe upper, and wherein the baseplate includes a substantially planar body, which is configured to provide stability to the shoe upper, and a plurality of tread elements, which are configured to protrude through a respective opening of a plurality of openings in a bottom portion of the shoe upper when the baseplate is removably inserted into the shoe upper, wherein the plurality of tread elements are unitarily formed with the body.

A footwear construction capable of incorporating one to three platform layers, or no platform layers at all. The invention comprises a kit including a sneaker member, optionally includable in the final construction first second and third platform members, guide members, optionally in sets of three, suitable for inclusion in a constructed footwear item with one, two or three platform members, and a tread its sole member, optionally replaceable by other types of soles.

A convertible shoe may include a sole and a plurality of interchangeable heel portions, each selectively attachable to the sole. The heel portions may each include a mounting surface configured to interface with a heel receiver of the sole. The heel receiver may include a fixed hook and a movable hook, with the movable hook being operable by an actuator coupled to a bottom surface of the sole. In some examples, an upper is secured to the sole of the shoe by one or more clamping plates. In some examples, the sole of the shoe is configured to be biased into a default bend corresponding to a high-heeled state even when a low heel is attached to the heel receiver.

A convertible shoe may include a sole and a plurality of interchangeable heel portions, each selectively attachable to the sole. The heel portions may each include a mounting surface configured to interface with a heel receiver of the sole. The heel receiver may include a fixed hook and a movable hook, with the movable hook being operable by an actuator coupled to a bottom surface of the sole. In some examples, an upper is secured to the sole of the shoe by one or more clamping plates. In some examples, the sole of the shoe is configured to be biased into a default bend corresponding to a high-heeled state even when a low heel is attached to the heel receiver.