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A dual-purpose sports footwear is formed of a boot, an elastic plate, an arcuate outer plate, and a wheel mount plate. The boot has an arcuate inner plate which is detachably fastened to the elastic plate. The arcuate outer plate is detachably fastened to the elastic plate. The boot, the elastic pla

A dual-purpose sports footwear is formed of a boot, an elastic plate, an arcuate outer plate, and a wheel mount plate. The boot has an arcuate inner plate which is detachably fastened to the elastic plate. The arcuate outer plate is detachably fastened to the elastic plate. The boot, the elastic plate and the arcuate outer plate form a jumpshoe. The wheel mount plate is provided with a plurality of wheel sets and is detachably fastened to the arcuate inner plate of the boot to form a roller skate.

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1. A dual-purpose sports footwear comprising: a boot having an arcuate inner plate fastened to an underside of a sole of said boot, said arcuate inner plate having at least one retaining projection at opposite longitudinal ends thereof; an elastic plate having at least one upper retaining slot f

1. A dual-purpose sports footwear comprising: a boot having an arcuate inner plate fastened to an underside of a sole of said boot, said arcuate inner plate having at least one retaining projection at opposite longitudinal ends thereof; an elastic plate having at least one upper retaining slot formed in an upper side of opposite longitudinal ends of said elastic plate, the upper retaining slots corresponding in location to the retaining projections of said arcuate inner plate of said boot, said elastic plate being joined with said arcuate inner plate such that the retaining projections of said arcuate inner plate are removably retained in the upper retaining slots of said elastic plate, said elastic plate having at least one lower retaining slot formed in an underside of opposite longitudinal ends of said elastic plate, the lower retaining slots being opposite in location to the upper retaining slots; an arcuate outer plate having at least one retaining portion formed at opposite longitudinal ends thereof, the retaining portions being fastened to an underside of said elastic plate such that the retaining portions of said arcuate outer plate are removably retained in the lower retaining slots of said elastic plate; and a wheel mount plate having at least one retaining slot formed at opposite longitudinal ends thereof, the retaining slots of said wheel plate mount corresponding in location to the retaining projections of said arcuate inner plate of said boot, said wheel mount plate further having a plurality of wheel sets fastened pivotally therewith at an underside thereof whereby said wheel mount plate is joined with said boot, the retaining projections of said arcuate inner plate of said boot being removably retained in the retaining slots of said wheel mount plate. 2. The dual-purpose sports footwear as defined in claim 1, wherein said elastic plate has a plurality of elastic strips. 3. The dual-purpose sports footwear as defined in claim 1, wherein said arcuate outer plate has a skidproof pad fastened therewith at an underside thereof. 4. The dual-purpose sports footwear as defined in claim 1, wherein said wheel mount plate comprises: an elastic wheel plate; a front wheel frame fastened to an underside of a front end of said elastic wheel plate; a rear wheel frame fastened to an underside of a rear end of said elastic wheel plate; and a connection plate connecting said front wheel frame with said rear wheel frame, said plurality of wheel sets of said wheel mount plate being pivotally fastened to said front wheel frame and to said rear wheel frame whereby said plurality of wheel sets are respectively formed of two side wheels of a semicircular shape and a center wheel mounted between said two side wheels. 5. The dual-purpose sports footwear as defined in claim 4, wherein said rear wheel frame has a slide frame, said connection plate being fastened at a front end to said front wheel frame and being pivoted at a rear end with said slide frame of said rear wheel frame. 6. The dual-purpose sports footwear as defined in claim 1, wherein said boot is formed of a toe boot and a heel boot, said toe boot and said heel boot having a slide slot formed in a sole thereof and a guide slide plate disposed in said slide slot, said toe boot and said heel boot having a reinforcing plate at the juncture of the respective soles thereof, said guide slide plate and said reinforcing plate being fastened to said arcuate inner plate by a plurality of fastening bolts, said toe boot and said heel boot having a plurality of adjustment holes suitable for adjusting a distance between said toe boot and said heel boot in conjunction with a plurality of bolts and nuts.