Abstract: A size-adjustable sport shoe includes a shoe head, a shoe insole, and an adjusting telescopic device including a gear, a shaft gear, first and second gear racks, and handle. The first and second gear racks are located at two lateral sides of an elongated adjustment groove at the shoe head, wherein the upper surface of the second gear rack is lower than the upper surface of the first gear rack. The gear shaft is coupled between the gear and the handle. When the handle is folded perpendicularly to an axis direction of the gear shaft, the gear meshes with the first gear rack to lock up the shoe head at the shoe insole. When the handle is folded to coincide with the axis direction of the gear shaft, the gear meshes with the second gear rack to allow the shoe head to be slid from the shoe insole.

Abstract: A wearable device configured to selectively provide roller transportation, the wearable device including a shoe, a plurality of wheel assemblies, each wheel assembly being configured to selectively roll relative to a ground surface about an associated axis of rotation, and a frame connected between the wheel assemblies, the frame comprising a trunk and a plurality of branches extending from the trunk, each of the branches being configured for connection to at least one of the plurality of wheel assemblies, wherein at least a portion of the shoe is located vertically higher than at least a portion of the frame when at least one of the wheel assemblies is in contact with the ground surface and the at least one of the wheel assemblies is positioned to selectively roll relative to the ground surface.

Abstract: Devices and methods of transport are disclosed. Various embodiments include structural aspects related to steering and changing the direction of conveyances including features which utilize leaning or shifting of weight as part of turning.

Abstract: A quick-release truck system includes a deck plate, a truck plate, and a locking mechanism for releasably locking the truck plate to the deck plate. The deck plate mounts to an underside of a deck of a rideable vehicle, and the truck plate mounts to, or is integrated into, an upper surface of a truck baseplate. The deck plate and the truck plate slidingly engage one another using vertically-staggered complementary coupling means. The coupling means may further be horizontally-staggered to create a tiered configuration. The coupling means include a combination of rails and grooves. Once fully engaged, the truck plate releasably locks to the deck plate. The deck plate and the truck plate may include cut-outs for weight reduction.

Abstract: An adjustable roller skate is provided with a lower frame including a toe stop; a wheel assembly secured to the lower frame; an upper frame including a groove, a trough disposed rearward of the groove, a channel at a rear end, and a seat disposed in the trough and having a recess communicating with the channel; an adjustment mechanism including an externally threaded shaft disposed in both the channel and the recess, and a handle pivotably secured to a rear end of the externally threaded shaft and disposed externally of the upper frame; a sole including a toe cap, an internally threaded member on an underside of a rear end and threadedly secured to the externally threaded shaft, and a stem on the underside and slidably disposed in the groove; and a shoe disposed around an edge of the sole with the toe cap concealed.

Abstract: The present disclosure relates to a binding equipment for binding a hard-shell boot comprising a profiled bottom surface to a ski, the ski comprising a bottom surface to be directed towards a gliding element and a top surface to be directed towards the boot, wherein the binding equipment is configured to adapt the top surface of the ski to the profiled bottom surface of the boot.

Abstract: A fastening device for a sliding board includes a base that defines a housing in which a shoe is designed to be immobilized by a maintaining device. The maintaining device includes a vertical locking pivot cooperating with an anchor element secured to the board on the one hand, and with rotational blocking elements on the other hand. The base includes a lower plate and an upper plate to support the shoe and sliding relative to one another, the pivot ensuring sliding locking of the two plates.

Abstract: An adjustable roller skate includes an adjustable sole assembly, a lock, a cover assembly and a wheel assembly. The adjustable sole assembly includes a rear sole and a front sole. The rear sole is formed with a transverse wall. The front sole includes a longitudinal bar extending from a rear end thereof and a transverse bar extending from the longitudinal bar. When the front sole is moved far enough from the rear sole, the transverse bar abuts the transverse wall to prevent excessive movement of the front sole from the rear sole. The lock is used to lock the front sole in a desired position relative to the rear sole. The cover assembly includes a heel cover formed on the rear sole and a toe cover formed on the front sole. The wheel assembly includes a chassis connected to the rear sole and wheels connected to the chassis.

Abstract: A roller skate having enhanced durability and stability is disclosed. Furthermore, the roller skate is particularly adapted for affixing to a person's footwear, such as sneakers, boots or the like. The skate includes a platform for supporting a skater's foot. The platform includes a toe plate and heel plate connected by an adjustable connecting assembly. A front truck is affixed to the underside of the toe plate, while a rear truck is affixed to the underside of the heel plate. The front truck includes simple bracket arms for affixing a single front wheel which is capable of rotating, but not capable of tilting about the platform's longitudinal axis. Meanwhile, the rear wheel truck is mounted to the underside of the heel plate so as to permit both tilting movement about an inclined longitudinal axis, and also rotation about a transverse axis relative to the roller skate's platform. Preferably, the roller skate includes three wheels rotatably mounted to the rear wheel truck.

Abstract: A wearable device configured to selectively provide roller transportation, the wearable device including a shoe configured to at least partially accept a foot of a user of the wearable device, the shoe comprising a foot interface surface configured for selective contact with a bottom of the foot, a wheel assembly configured to selectively roll relative to a ground surface in response to rotation of at least a portion of the wheel assembly about an axle that is substantially coincident with an axis of rotation, a frame connected between the shoe and the wheel assembly, the frame being configured to selectively transfer forces between the shoe and the wheel assembly and the frame comprising a clearance plane vertically offset from the ground surface, and an attachment system for selective attachment of the shoe to the frame.

Abstract: A roller skate having enhanced durability and stability is disclosed. Furthermore, the roller skate is particularly adapted for affixing to a person's footwear, such as sneakers, boots or the like. The skate includes a platform for supporting a skater's foot. The platform includes a toe plate and heel plate connected by an adjustable connecting assembly. A front truck is affixed to the underside of the toe plate, while a rear truck is affixed to the underside of the heel plate. The front truck includes simple bracket arms for affixing a single front wheel which is capable of rotating, but not capable of tilting about the platform's longitudinal axis. Meanwhile, the rear wheel truck is mounted to the underside of the heel plate so as to permit both tilting movement about an inclined longitudinal axis, and also rotation about a transverse axis relative to the roller skate's platform. Preferably, the roller skate includes three wheels rotatably mounted to the rear wheel truck.

Abstract: A roller skate having enhanced durability and stability is disclosed. Furthermore, the roller skate is particularly adapted for affixing to a person's footwear, such as sneakers, boots or the like. The skate includes a platform for supporting a skater's foot. The platform includes a toe plate and heel plate connected by an adjustable connecting assembly. A front truck is affixed to the underside of the toe plate, while a rear truck is affixed to the underside of the heel plate. The front truck includes simple bracket arms for affixing a single front wheel which is capable of rotating, but not capable of tilting about the platform's longitudinal axis. Meanwhile, the rear wheel truck is mounted to the underside of the heel plate so as to permit both tilting movement about an inclined longitudinal axis, and also rotation about a transverse axis relative to the roller skate's platform. Preferably, the roller skate includes three wheels rotatably mounted to the rear wheel truck.

Abstract: A skate comprises a soleplate member including a heel support and a toe support overlapping and adapted to slide with respect to the heel support in a longitudinal axis and fixed in a desired position as to achieve a desired length of the soleplate member; wherein the toe support includes first and second teeth spaced from each other; and an adjustment unit including teeth adapted to selectively wedge with the first teeth and a wedging end adapted to selectively wedge with the second teeth.

Abstract: A roller skate having enhanced durability and stability is disclosed. Furthermore, the roller skate is particularly adapted for affixing to a person's footwear, such as sneakers, boots or the like. The skate includes a platform for supporting a skater's foot. The platform includes a toe plate and heel plate connected by an adjustable connecting assembly. A front truck is affixed to the underside of the toe plate, while a rear truck is affixed to the underside of the heel plate. The front truck includes simple bracket arms for affixing a single front wheel which is capable of rotating, but not capable of tilting about the platform's longitudinal axis. Meanwhile, the rear wheel truck is mounted to the underside of the heel plate so as to permit both tilting movement about an inclined longitudinal axis, and also rotation about a transverse axis relative to the roller skate's platform. Preferably, the roller skate includes three wheels rotatably mounted to the rear wheel truck.

Abstract: The present invention relates to a size-adjusting fastening mechanism for stakes comprising fixed locking grooves and a movable locking convex block, whereby when one of the grooves engages with the convex block, tooth position is loosened and toecap is telescopic upon pulling. When the groove and the convex block are rotated to deflect so as not to engage with each other, tooth position is pressed to lock so as to be irremovable. Such a structure requires that the pull handle be pulled horizontally forwards and backwards. Being secured with rivet punching, the claimed device possesses good stability, is simple in structure, low in cost and easy for operation.

Abstract: The present invention relates to a size-adjusting fastening mechanism for stakes comprising fixed locking grooves and a movable locking convex block, whereby when one of the grooves engages with the convex block, tooth position is loosened and toecap is telescopic upon pulling. When the groove and the convex block are rotated to deflect so as not to engage with each other, tooth position is pressed to lock so as to be irremovable. Such a structure requires that the pull handle be pulled horizontally forwards and backwards. Being secured with rivet punching, the claimed device possesses good stability, is simple in structure, low in cost and easy for operation.

Abstract: The present invention teaches an apparatus and method for removably securing an article of footwear suitable for walking, running, or bicycling to a wheeled skate. Further, the present invention also teaches a brake device for use with a wheeled skate. In addition, the present invention teaches a wheeled skate including a suspension system that can be propelled with the use of linear or side stroke skating techniques. Moreover, the present invention teaches a quad wheeled skate having advantageous structure and function for recreational skating and aerobic exercise.

Abstract: A size adjusting mechanism for inline roller skate includes a boot seat, and a toe cap longitudinally movably mounted above the boot seat. An engaging element is controlled by a control element to transversely slide in the boot seat. The control element has a curved inner end contacting with an end of the engaging element, and turnable about an eccentric pivot shaft. A first and a second adjusting element are respectively provided on the engaging element and below the toe cap to normally engage with each other and thereby keep the toe cap immovable on the boot seat. When the control element is turned for the engaging element to engage with a point on the curved inner end farther from the pivot shaft, the first adjusting element is disengaged from the second adjusting element, allowing the toe cap to move relative to the boot seat.

Abstract: A skate having a base adapted to support a user's boot, a frame equipped with a plurality of wheels and having a transverse arch in its central portion, at least one rear quarter capable of sliding on the base and adapted to surround the heel zone and the lower leg of the boot. The base has two edges that project upwardly and surround the lower portion of the rear quarter, each of the vertical edges having a longitudinal groove capable of receiving a platform provided on the outer sides of the rear quarter, and attaching mechanism allowing the attachment of the rear quarter to the base in various positions.

Abstract: For a glide sport article, especially an ice skate with a shoe body that is located on a chassis and that includes a cap-like shoe tip forming the toe area of the shoe body, a shoe body section forming the heel area and an ankle support, lacing on the shoe body section and a tongue located beneath the lacing, the shoe tip can be adjusted in a shoe body direction relative to the shoe body section on the chassis.

Abstract: An adjustable skate includes a boot, a liner, and an adjusting device. The boot includes a toe cap, a heel portion, and a sole. The liner is mounted in the boot and includes a bottom plate and a toe box. A chamber is defined between the toe box and the heel portion of the boot for receiving a foot of a wearer. The adjusting device is mounted below the sole and includes a screw rod and a screw rod jacket. The screw rod jacket includes a longitudinal screw hole threadedly engaged with a threaded portion of the screw rod. The screw rod jacket is fixed below the liner to move therewith. When the screw rod is turned, the screw rod jacket moves in a longitudinal direction of the screw rod and the liner moves in a lengthwise direction of the chamber.

Abstract: A size-adjustable in-line skate having a base carrying a plurality of wheels thereon. An upper is secured to a top surface of the base and defines a heel portion, a toe portion, and diametrically opposed side wall portions. The upper is supported by a support structure that includes a heel cup and a toe cup. The toe cup is secured to the toe portion of the upper and slideably coupled to the base so that the toe cup can slide longitudinally with respect to the base. An actuator is coupled to the toe cup and travels therewith. When the actuator is translated, engagement members on the actuator disengage with detents on the base to allow the toe cup to freely slide between longitudinal positions to adjust the shoe size of the skate.

Abstract: An inline skate with changeable length has an inner boot, an adjusting device, an outer boot and a wheel assembly. The adjusting device is attached to the inner boot and comprises a block and a key. The block has a longitudinal adjustment slot and a transverse slot communicating with the longitudinal adjustment slot. The key is mounted through the transverse slot and selectively extends into the longitudinal adjustment slot. The outer boot has an outer toe and an outer heel. The outer toe has a rear edge and a tongue formed on and protruding from the rear edge, mounted slidably in the longitudinal adjustment slot and having multiple adjustment slots. The adjustment slots selectively align with the transverse slot in the block and are engaged by the key. A wheel assembly is mounted under the outer heel. Hence, adjusting the length of the inline skate is easy and convenient.

Abstract: A binding (2) which retains a boot (11) on a snowboard (1) includes a base member (4). Rear walls (8a, 8b) and a rear arch (9) with a rear portion (21) of the base member support a heel of the boot. A front support piece (18) to which a toe strap (16) is pivotally mounted (24a, 24b), is adjustably mounted to a front part (20) of the base member. The front support piece is longitudinally adjustable and a length of the toe strap is adjustable to enable the binding to receive boots of different length and style.

Abstract: A skate with an adjustable sole plate has a sole plate and a boot mounted on the sole plate. The sole plate has a front body and a rear body. The front body has a locking element mounted on the front body, and the rear body of the sole plate has at least one key formed on the rear body. The key comprises multiple transverse locking holes/slots defined in the key to correspond to different lengths. A person can adjust the length of the sole plate by inserting the locking element of the front body into different transverse locking holes, transverse slots or both.

Abstract: A skate includes a holder frame, a boot, and a locking mechanism. The boot comprises a toe box and a heel portion, wherein the toe box is fixedly attached to the holder frame and wherein the heel portion engages the holder frame such that the heel portion is capable of moving relative to the toe box for adjusting the size of the boot. The skate also comprises a locking mechanism that is operable to selectively position and retain the heel portion in more than one position with respect to the toe box by engagement with the holder frame, wherein the locking mechanism is activatable through a push button.

Abstract: There is disclosed an in-line skate with an adjustable length. The in-line skate includes a heel support, a toe support, a positioning element, a pushing element, and a switch. The heel support includes two parallel transverse grooves near a flank, a cavity near an opposite flank, a longitudinal groove between the transverse grooves and the cavity, and a slot therein. The toe support includes a slide put movably in the longitudinal groove and a series of pockets in the slide. The positioning element includes a button put movably in the cavity and two latches put movably in the transverse grooves of the heel support for entering a selective pair of the pockets of the toe support, thus keeping the toe support in selective one of several positions relative to the heel support. The pushing element is put movably in the cavity for pushing the button and hence the latches. The pushing element defines a tunnel.

Abstract: A skate (200) having a frame (226) adapted to support a plurality of wheels (228) and a base (214) disposed above the frame. The base includes a platform (280) having a longitudinal rail (282) with a plurality of locking detents (288), and an upwardly extending guide tab (284). A separable semirigid toe cup (216) includes an elongate slit (254) therethrough, and slidably engages the rail of the base, such that the toe cup can be adjusted longitudinally. An angled channel (264) in the toe cup engages the guide tab, such that the width of the slit, and therefore the width of the toe cup, increases as the toe cup is moved to lengthen the skate. In an alternative embodiment of the invention, a threaded post (302) extends transversely through the slit, permitting independent adjustment of the width of the toe cap.

Abstract: The Skateboard Truck Mounting System is a mounting system for the attachment of a skateboard wheel truck to the deck of a skateboard. This system provides quick and easy adjustment to incrementally reposition a skateboard wheel truck assembly in a number of predetermined locations along the length of underside of the skateboard deck. This system may be utilized on new or existing decks to achieve personalized sizing and performance characteristics for a skateboard rider.

Abstract: A skate comprises a chassis with a variable length boot disposed thereon. The variable length boot includes a heel portion fixedly disposed upon the chassis and a toe box slidably disposed upon the chassis. The toe box is slidable in relation to the heel along the longitudinal axis of the skate to increase or decrease the size of the boot. A locking mechanism attached to the toe box locks the toe box to the chassis at a selected position. The selected position is chosen from a plurality of spaced-apart slots disposed within the chassis. The locking mechanism includes a positionable clasp insertable into a selected slot to lock the toe box to the chassis at the selected position.

Abstract: A frame for an article of sports equipment, such as a frame for a skate, such as a roller skate, including a front upper portion provided to receive the front portion of a boot, and a rear upper portion provided to receive the rear portion of a boot. The front upper portion and the rear upper portion are part of the same planar upper surface. The frame further includes two cylindrical holes provided to receive two fixing elements, the holes extending in the longitudinal plane of the frame and their respective axes being spaced from one another by a value E of between about 164 mm and 170 mm, more particularly equal to about 167 mm. Moreover, a substantially cylindrical cavity centered on the axis of the cylindrical hole is provided in the upper surface. The invention is also directed to a line of boots for a roller skate and to a line of frames therefor.

Abstract: An adjustable frame assembly for skates to allow for attachment of the frame in a number of positions along the length of the boot portion of the skate. The assembly comprises a skate foot bed containing two recessed portions each containing an opening flanked by ribs corresponding to ribs on a T-nut allowing the T-nut to rest in a variety of positions in the recessed portion. The T-nut further comprises a threaded opening for coupling to a fastener which attaches the frame to the base of the boot portion of the skate.

Abstract: A roller skate with an adjustable longitudinal dimension for adjusting the dimension of the shoe cap of the roller skate includes an anchor section under a two-piece shoe cap that has a first coupling section. An adjusting bolt is provided on the truck with a second coupling section and a sliding trough. The adjusting bolt may be moved horizontally through an elastic element. When the elastic element is depressed, the sliding trough is slid to the first coupling section of the anchor section to enable the shoe cap to be moved forwards and rearwards. When the elastic element is released, the two coupling sections are latched together to anchor the shoe cap. Thus the longitudinal dimension of the roller skate may be adjusted as desired.

Abstract: A size-adjustable in-line skate having a base carrying a plurality of wheels thereon. An upper is secured to a top surface of the base and defines a heel portion, a toe portion, and diametrically opposed side wall portions. The upper is supported by a support structure that includes a heel cup and a toe cup. The toe cup is secured to the toe portion of the upper and slideably coupled to the base so that the toe cup can slide longitudinally with respect to the base. An actuator is coupled to the toe cup and travels therewith. When the actuator is translated, engagement members on the actuator disengage with detents on the base to allow the toe cup to freely slide between longitudinal positions to adjust the shoe size of the skate.

Abstract: A skate comprises a chassis with a variable length boot disposed thereon. The variable length boot includes a toe portion fixedly disposed upon the chassis and a heel portion slidably disposed upon the chassis. The heel portion is slidable in relation to the toe portion along the longitudinal axis of the skate to increase or decrease the size of the boot. A locking mechanism attached to the heel portion locks the heel portion to the chassis at a selected position. The selected position is chosen from a plurality of spaced-apart slots disposed within the chassis. The locking mechanism includes a positionable clasp insertable into a selected slot to lock the heel portion to the chassis at the selected position.

Abstract: An in-line skate includes a sole plate having wheels rotatably connected to the underside of the sole plate and two elongated first slots are longitudinally defined through the sole plate. A rear portion of vamp is connected to a connection wall on the sole plate. A toe part has two elongated second slots longitudinally defined therethrough and a front portion of vamp is connected to the toe part. The toe part is connected to a top of a front end of the sole plate. Two adjusting members extend through the second slots in the top part and the first slots in the sole plate and are cooperated with two quick-release levers located at the underside of the sole plate such that the toe part can be moved relative to the sole plate by operation of the adjusting members.

Abstract: A wheeled skate device has a pair of large primary wheels coupled to a platform. The primary wheels rotate about primary axes of rotation in both forward and rearward directions. A binding can be disposed on the platform to secure the user's feet. The primary axes are located at a height above the platform or binding. The skate device can have a universal wheel coupled to the platform which rotates about a secondary axis of rotation. The universal wheel also pivots about a vertical pivot axis such that the universal wheel turns with the platform without sliding on the support surface. The wheels cooperatively operate in a travel mode and spinning mode.

Abstract: An adjustable in-line skate has a rigid frame, a plurality of wheels rotatably secured to the frame in a line, a sole plate secured to the frame having a heel portion and a toe portion, and a boot mounted on the sole plate. The boot has a toe shell and a separate heel shell. The heel and toe shells are each adjustably secured to the sole plate for adjustment of the overall length of the boot, so that two separate adjustment points are provided.

Abstract: An adjustable skate includes a boot and a liner. The boot includes an upper and a sole, the upper including a toe cap and a heel portion. The liner is mounted in the boot and includes a bottom plate slidably mounted on the sole and a toe box provided on a front end of the bottom plate. A chamber for receiving a foot of a wearer is defined between the toe box of the liner and the heel portion of the boot. A member is formed on the toe box of the liner. An adjusting member is mounted to the toe cap of the boot and engaged with the member on the toe box of the liner. The adjusting member and the member are so configured that rotation of the adjusting member causes the liner to move along a lengthwise direction of the boot.

Abstract: A skate having a base adapted to support a user's boot, a frame equipped with a plurality of wheels and having a transverse arch in its central portion, at least one rear quarter capable of sliding on the base and adapted to surround the heel zone and the lower leg of the boot. The base has two edges that project upwardly and surround the lower portion of the rear quarter, each of the vertical edges having a longitudinal groove capable of receiving a platform provided on the outer sides of the rear quarter, and attaching mechanism allowing the attachment of the rear quarter to the base in various positions.

Abstract: An easily adjusted skate includes a front seat, a rear seat and a buckle structure for connecting the front seat and the rear seat. The buckle structure is formed by a round lower cover, a buckle, and a tooth bank. An upper side of the lower cover has a confining seat and the confining seat has guide grooves at two sides thereof. Thereby, the buckle slides along the linear guide grooves of the lower cover. One inner end of the buckle has engaging teeth which protrude downward and extend inward so that the engaging teeth are exactly engaged to the tooth bank at a lower end of the front seat. The user can press the buckle from a lateral side of the skate so that the engaging teeth of the buckle separates from the tooth bank; and thus the size of the skate is adjusted.

Abstract: An in-line skater includes a first shell a first shell 10 for receiving a substantial portion of a user's foot and a second shell for receiving a front portion of the user's foot. The first shell includes at least one block defining a hole. The second shell includes at least one block defining a plurality of holes. A bolt is inserted in one of the holes of the at least one block of the second shell and in the hole of the at least one block of the first shell. The first or second shell is secured to a chassis on which several wheels are mounted.

Abstract: An adjustable skate includes a boot and a liner. The boot includes an upper and a sole, the upper including a toe cap and a heel portion. The liner is mounted in the boot and includes a bottom plate slidably mounted on the sole and a toe box provided on a front end of the bottom plate. A chamber for receiving a foot of a wearer's foot is defined between the toe box of the liner and the heel portion of the boot. A member is formed on the toe box of the liner. An adjusting member is mounted to the toe cap of the boot and engaged with the member on the toe box of the liner. The adjusting member and the member are so configured that rotation of the adjusting member causes the liner to move along a lengthwise direction of the boot.

Abstract: An adjustable skate includes a boot, a liner, and a bladder. The boot includes an upper and a sole, the upper having a toe cap and a heel portion. The liner is mounted in the boot and includes a bottom plate slidably mounted on the sole and a toe box on a front end of the bottom plate. A chamber for receiving a foot of a wearer's foot is defined between the toe box of the liner and the heel portion of the boot. The bladder is mounted between the toe box of the liner and the toe cap of the boot. The bladder has a volume that is adjustable through inflation of air into the bladder or discharge of air out of the bladder, thereby moving the liner along a lengthwise direction of the boot.

Abstract: An adjustable skate includes a boot, a liner, and a bladder. The boot includes an upper and a sole, the upper having a toe cap and a heel portion. The liner is mounted in the boot and includes a bottom plate slidably mounted on the sole and a toe box on a front end of the bottom plate. A chamber for receiving a foot of a wearer's foot is defined between the toe box of the liner and the heel portion of the boot. The bladder is mounted between the toe box of the liner and the toe cap of the boot. The bladder has a volume that is adjustable through inflation of air into the bladder or discharge of air out of the bladder, thereby moving the liner along a lengthwise direction of the boot.

Abstract: An adjustable fit in-line skate is disclosed having a rigid frame carrying a plurality of skate wheels. A boot is secured to the frame with the boot having a toe portion and a heel portion. The heel portion has a sole plate which is carried over the length of the frame. The toe portion receives the sole plate and is slidably attached to the heel portion.

Abstract: An adjustable in-line skate has a rigid frame, a plurality of wheels rotatably secured to the frame in a line, a sole plate secured to the frame having a heel portion and a toe portion, and a boot mounted on the sole plate. The boot has a toe shell and a separate heel shell. The heel and toe shells are each adjustably secured to the sole plate for adjustment of the overall length of the boot, so that two separate adjustment points are provided.

Abstract: A roller skate with a micro adjustment device includes a wheel frame, a quarter and a vamp, the wheel frame has a first chain and slots on both sides, and a second chain on top surface thereof, the vamp also comprises a third chain and holes on both sides as well, a quick release device is inserted with its shaft through the holes of the vamp and the slots of the wheel frame that aligns the first chain and the third chain, the shaft secures a gear aligns with the second chain, by tightening and loosening of the quick release device, the gear is adjustable with regard to the second chain, thus the third chain of the vamp is adjustable along the first chain of the wheel frame.

Abstract: 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.

Abstract: An adjustable device for a roller skate includes a base securely engaged with a bottom face of the sole portion, a positioning plate received in the recess of the base, a clamping plate pivotally connected to the positioning plate and a retainer extending to secure connection in the heel portion, the sole portion, the positioning plate and the base. Pivotal movement of the clamping plate toward the heel portion secures the relative position between the heel portion and the sole portion and pivotal movement of the clamping plate away from the heel portion enables the relative position between the heel portion and the sole portion to be slidable.