A functional shoe includes a sole, a functional part to provide a specific function to the functional shoe, a fixing part provided to fix the functional part; and a coupling part provided to be coupled to the fixing part, and directly or indirectly coupled to the sole, at an opposite side to a side coupled to the fixing part. The fixing part includes a fixing body provided to be coupled to the functional part, and a leg member formed to extend from the fixing body in a reference direction which is a direction facing the sole from the fixing body. The coupling part includes an insertion slot provided inside the coupling part to be open in a direction opposite to the reference direction such that the leg member is inserted into the insertion slot.

A ground-engaging device that is capable of sustained rolling, stable braking, secure standing, and walking. In one preferred embodiment, the invention relates to a wheeled footwear device. In another preferred embodiment, the invention relates to a wheeled footwear platform. In yet another preferred embodiment, the invention relates to a wheeled artificial foot.

Provided is a heeling apparatus. The heeling apparatus includes a sole including a forefoot portion and a heel portion. The heel portion has an opening formed therein. In one embodiment, the sole includes a removable portion. The heeling apparatus further includes a wheel assembly including wheel rotably mounted to an axle and a mounting structure, wherein the wheel extends through the opening in the heel portion.

A skate includes an inverted groove-shaped base secured to a boot and including front and rear pins; an elongated frame including front and rear sets of a transverse inner groove and a transverse open groove communicating with the transverse inner groove, and a threaded hole on the transverse open groove of the front set wherein either pin is disposed in the transverse inner groove and the elongated frame abuts an underside of the base; and a locking device including a spring biased block member disposed in the transverse open groove of the front set and having two projections at two ends respectively, a screw driven through a positioning member into the threaded hole to fasten the positioning member in the transverse open groove of the front set so that the block member abuts the front pin to block same in an assembled state.

Functional shoes include a sole, a coupling member including a coupling body detachably coupled to the sole; an auxiliary lever coupled to the coupling body so as to be rotatable toward a bottom surface of the sole; and a fixing part protruding from the auxiliary lever toward the bottom surface of the sole and is detachably coupled to the sole, and at least one functional member provided integrally with the coupling body or detachably coupled to the coupling body to provide a predetermined function to the shoes. The fixing part moves between a coupling position in which the fixing part is coupled to the sole and a separation position in which the fixing part is separated from the sole, by a rotation of the auxiliary lever.

A modular skating assembly for switching between types of skating styles includes a boot that is configured to couple to a foot of a user. A first coupler is coupled to a sole of the boot. Each of a plurality of second couplers is complementary to the first coupler. Each of a plurality of skate modules is coupled to a respective second coupler. The respective second coupler is positioned to couple to the first coupler to selectively couple the skate module to the boot. The improvement is the plurality of skate modules being selectively couplable to the boot, such that a pair of the boots is selectively configurable to enable a particular style of skating, such as in-line skating and roller skating.

Disclosed herein is a retractable inline skate shoe. The retractable inline skate shoe is configured such that: a cavity is formed in the sole of a shoe body; the housing is mounted and fastened in the cavity; a slider is inserted into the housing; a push button is configured to protrude to an outside via a through hole portion formed in a heel of the shoe sole; a number of L-shaped wheel shaft insertion recesses are formed in lower portions of both left and right sides of the slider; a frame is mounted inside the slider; recessed wheel shaft fitting recesses are formed in both side wall surfaces of the frame; two fastening recesses are fastened onto the shoe sole; a guide is inserted into the frame; and the slider containing the frame is fastened into the housing by means of housing fastening plates.

Disclosed herein is a retractable inline skate shoe. The retractable inline skate shoe is configured such that: a cavity is formed in the sole of a shoe body; the housing is mounted and fastened in the cavity; a slider is inserted into the housing; a push button is configured to protrude to an outside via a through hole portion formed in a heel of the shoe sole; a number of L-shaped wheel shaft insertion recesses are formed in lower portions of both left and right sides of the slider; a frame is mounted inside the slider; recessed wheel shaft fitting recesses are formed in both side wall surfaces of the frame; two fastening recesses are fastened onto the shoe sole; a guide is inserted into the frame; and the slider containing the frame is fastened into the housing by means of housing fastening plates.

Provided is a heeling apparatus. The heeling apparatus includes a sole including a forefoot portion and a heel portion. The heel portion has an opening formed therein. In one embodiment, the sole includes a removable portion. The heeling apparatus further includes a wheel assembly including wheel rotably mounted to an axle and a mounting structure, wherein the wheel extends through the opening in the heel portion.