Abstract: A foldable electric scooter and a manufacture method of the same. The foldable electric scooter includes a main body assembly, a front fork assembly located at the front end of the main body assembly, a rear fork assembly located at the rear end of the main body assembly, a telescoping plate assembly located on top of the front fork assembly and a handlebar assembly located on top of the telescoping plate assembly. The foldable electric scooter has a double headset design that increases a rake angle for more steering stability while still keeping the steering upright for an upright holding of the handlebars. The foldable electric scooter is manufactured by stamping of flat plate material.

Abstract: A swing roller skate with a novel manufacturing process includes: an aluminum insert, a panel, an anti-wear bar, a lower bearing, an upper bearing, an insert plastic wheel fork, a PU wheel and an insert cap, wherein: the aluminum insert is injection-molded into the panel; a front portion of the panel forms a pole, a front end forms a cylinder, a rear portion forms a flat cylinder, a rear end forms a cylinder, and a middle forms a circular sheet; top side holes and bottom side holes are drilled at the front end and the rear end of the panel, and through holes are provided between the top side holes and the bottom side holes; two oval holes are drilled at a circular bottom face of the plane, the anti-wear bar is provided at two sides of a bottom face of the middle portion of the plane.

Abstract: The present invention discloses a flat ground cross-country type roller skate comprising a skate body (1), wherein a wheel assembly at a lower part of the skate body, wherein the wheel assembly comprises a mounting seat (6) used to mount the skate body (1) and a hoisting mechanism disposed on the mounting seat (6). There are at least three wheel assemblies disposed on the hoisting mechanism, and each wheel assembly can hoist independently under the action of the hoisting mechanism. Thus, the wheel assemblies of the roller skate can be hoisted independently so as to adapt to various roads with uneven surface.

Abstract: A backpack type self balancing scooter having a foot-driven steering apparatus mounted thereon is provided, including: two wheels having motors mounted thereon; a motor housing for mounting the motors therein in such a manner as to allow rotary shafts of the motors to be located linearly to each other; a footrest; a shuttle ring mounted on any one side of the footrest; an erecting housing, a controller mounted on the upper portion, a cover disposed coveringly on top thereof, and an insertion hole formed on the center of the cover; a saddle; and a backpack. The rider walks in the state of carrying the backpack on the back, or puts the backpack on the around, sits on the saddle to drive the self balancing scooter in the state where both hands are free, while conducting the direction changes through the shuttle ring turned with his or her foot.

Abstract: A rocking sensor device includes a primary bracket (1), a rotating shaft (2), rollers (3), magnets (4) and a magnetic induction sensor (5). The primary bracket (1) is rockably connected to the rotating shaft (2). The rollers (3) and the magnets (4) are mounted on both ends of the primary bracket (1) and their positions are symmetrical about the rotating shaft (2). The magnetic induction sensor (5) is mounted on the perimeter of the primary bracket (1) at a position such that it can sense rocking of the magnet (4) on any end with the primary bracket (1). The rocking sensor device is wear and corrosion resistant, and can be self-cleaning.

Abstract: An inline roller skate includes at least one eccentric inline roller assembly (7) mounted under boot sole (50). The eccentric inline roller assembly comprises an inclined base (70) and a roller unit (8). A central axis Y-Y of the inclined base is offset by an acute angle from a vertical axis H-H of travelling surface. The roller unit comprises a roller seat (80) and a roller (9). The roller seat is rotatably pivoted to the inclined base, and the roller is rotatably pivoted to the roller seat and drifts from the central axis Y-Y of the inclined base. The inline roller skate of the invention can be easily propelled and favorably make a turn.

Abstract: A footwear product (10) with a selectively retractable skating mechanism (30) that permits a user to selectively change from WALK to SKATE. Mechanism (30) includes two coaxially disposed elongated rail assemblies (40; 60) conforming to each other and snuggly fitted to allow them to slide and cammingly deploy and retract wheel assembly (80) that protrudes outwardly in the SKATE position. Upper rail assembly (40) is totally housed within the sole assembly (20) in the WALK position.

Abstract: An interchangeable axle suspension spacer system of method of using same, in conjunction with an in-line skate frame, wherein the system includes a wheel means and shock absorbing apparatus having multiple layers, wherein certain layers are compressed within an embedded wall while others allow the for restricted tracking along a determined path, and wherein the system enables an individual to interchange, customize, and replace the shock absorbing apparatus amid operation of in-line skates.

Abstract: The invention is a dry surface skiing apparatus including a leading self-steering swivel caster and trailing non self-steering swivel caster. It offers major safety improvements compared to the existing prior art. Its operation closer resembles modern carving ski and eliminates problems such as swivel caster flutter and undesirable drift effect with rotary turns. It also adds the ability to brake. Elimination of flutter is achieved by application of non self-steering trailing swivel caster which is cross connected to the leading self-steering swivel casters by a steering system. The ground friction of the wheel in the trailing swivel caster dampens the flutter. At the same time since the rear wheel turns in the opposite way to the front wheel, a carved turn is achieved in a similar manner to flexing a carving ski along its entire length. In order to facilitate braking wing like members are attached to the outer edge of each ski which allow transmitting friction of ski pole tips to the ski platform.

Abstract: A deck wheeled device is provided comprising a deck, a subframe connected to at least one point of the deck, at least one truck assembly connected to the subframe, at least one wheel connected to each truck assembly, and at least one spring connecting each truck assembly to the deck. A wheel is provided comprising a tire, two substantially symmetrical hub halves, and at least one bolt that connect the two hub halves together.

Abstract: The described roller skate is essentially composed of a boot, to the sole of which the plate of a roller carrier element is detachably connected with screws penetrating the through holes. The screw holes are located on both sides of the vertical symmetry axis on the center longitudinal line. Bearing blocks and are connected to the underside of the plate via a web extending in the longitudinal direction. The floating axles of the inline rollers and of the outer rollers are inserted in bores through or through. The bearing blocks and with their different bores through or through are likewise embodied and arranged in a mirror symmetrical manner with respect to the vertical center line. The explained symmetry of the roller carrier element makes it possible for it to be used for the left and right roller skate.

Abstract: A skate shoe includes a shoe having a sole through which runs a horizontal bore. From both sides of the horizontal bore of the sole, a half-axle is inserted with a wheel fixed at an outer end of each half-axle. The two half-axles have at least one flattened portion on their respective inner ends, which is located within the horizontal bore. The two flattened portions overlap within the bore and, in a second half of each flattened portion that is closer to the respective wheel, there is a recess. The each recess is complementary formed to a detent lug in a first half of the respective flattened portion and with the detent being able to pivot into the recess of the other half-axle.

Abstract: An exemplary embodiment of the present invention includes a first coupler device configured to couple to the frame of an in-line skate. The first coupler device includes a linear portion and an angled portion where the linear portion and the angled portion have different lengths. The linear portion includes a first hole configured to couple to the frame of the in-line skate and the first hole is located near the end of the linear portion that is opposite the angled portion. The linear portion includes a second hole located at an area where the linear portion meets the angled portion. The angled portion has an angle greater than zero and includes a third hole near the end of the angled portion that is opposite the linear portion.

Abstract: Three wheeled skateboards having direct connection between the front and back skate wheels where there is improved maneuverability and turning capability is provided. A steering plate is added to the axle of a conventional front skateboard truck and is made specifically for this application. Both ends of the single cable are fixably attached to the steering plate and are connected to the single rear wheel truck to supply the direct mechanical linkage. The single wheel truck at the rear has the wheel mounted in such a way as to allow it to be turned by the mechanical linkage that carries turn motion from the two wheel truck at the front of the skateboard. The single wheel mounted to the rear of the centerline of the truck rather than in front of or on the centerline of the truck increases the quickness of the action of the skateboard.

Abstract: The invention is a dry surface skiing apparatus including a leading self-steering swivel caster and trailing non self-steering swivel caster. It offers major safety improvements compared to the existing prior art. Its operation closer resembles modern carving ski and eliminates problems such as swivel caster flutter and undesirable drift effect with rotary turns. It also adds the ability to brake. Elimination of flutter is achieved by application of non self-steering trailing swivel caster which is cross connected to the leading self-steering swivel casters by a steering system. The ground friction of the wheel in the trailing swivel caster dampens the flutter. At the same time since the rear wheel turns in the opposite way to the front wheel, a carved turn is achieved in a similar manner to flexing a carving ski along its entire length. In order to facilitate braking wing like members are attached to the outer edge of each ski which allow transmitting friction of ski pole tips to the ski platform.

Abstract: A wheel for an inline skate that may reduce rolling friction and provide a wider rolling base giving more stability. The wheel comprises a hub for receiving an axle and a wheel body defining a circumference of the wheel. The wheel body comprises a circumferential surface extending along the circumference of the wheel. The circumferential surface comprises a first contact surface and a second contact surface for being in rolling contact with a skating surface on which the inline skate moves. The wheel body also comprises a receding surface extending from the first contact surface to the second contact surface and forming a recess between the first contact surface and the second contact surface.

Abstract: An inline roller skate includes at least one eccentric inline roller assembly (7) mounted under boot sole (50). The eccentric inline roller assembly comprises an inclined base (70) and a roller unit (8). A central axis Y-Y of the inclined base is offset by an acute angle from a vertical axis H-H of travelling surface. The roller unit comprises a roller seat (80) and a roller (9). The roller seat is rotatably pivoted to the inclined base, and the roller is rotatably pivoted to the roller seat and drifts from the central axis Y-Y of the inclined base. The inline roller skate of the invention can be easily propelled and favorably make a turn.

Abstract: An apparatus for operating a roller up and down is provided, which includes a main body fixed to a bottom of a shoe, an operating body to which the roller is imbedded, which is slidably mounted within the main body, and an operating assembly to move the operating body within the main body between an operating position and a non-operating position, wherein the roller protrudes out from the main body in the operating position while the roller is retracted into the main body in the non-operating position. A wearer of a shoe is capable of shifting the shoe between an operating position in which the roller protrudes out from the bottom of the shoe and a non-operating position in which the roller is retracted into the bottom of the shoe, by a simple operation. Accordingly, the shoe can be used as a roller shoe when the roller is in the operating position, and used as a general walking shoe for everyday use when the roller is in the non-operating position.

Abstract: A non-motorized Riding Vehicle for transport of a rider on a surface. The Riding Vehicle includes a shoe body or platform for supporting at least one foot of the rider during the transport and at least one Riding Element under the shoe body or platform that rotates on an axle to facilitate the transport while supporting the rider. The at least one Riding Element includes stimulating elements for creating a periodic vibration during the transport that makes the transport on the surface less smooth than the transport would be if the at least one Riding Element did not include the stimulating elements. Also, a kit and method for converting the Riding Vehicle to a Riding Vehicle with a more or less (intense) vibratory ride.

Abstract: An in-line skate frame assembly has a rigid frame and an elongate grinding insert releasably engaged with the frame. The frame and insert are secured together to the sole of a shoe or boot by frame bolts extending through upper portions of the frame and insert. The frame has spaced side walls with downwardly facing recessed regions in which the insert is mounted. The insert extends along a major portion of the length of the frame and has a downwardly facing, centrally located grinding surface which terminates short of the opposite ends of the insert. Different inserts with grinding surfaces of different shapes and lengths are releasably secured to the frame for performing alternative grinding maneuvers.

Abstract: Footwear has a sole for supporting a foot of a wearer, a first pair of wheels projecting from opposite sides of the sole adjacent the heel, and a second pair of wheels spaced in front of the first pair and projecting from opposite sides of the sole adjacent the arch portion of the sole. The footwear is convertible from a wheeled configuration to a non-wheeled configuration by opening a cover plate normally covering a downwardly facing, recessed region of the heel, removing the wheel axles from wheel axle mounting grooves in the recessed region, then re-closing the cover plate over the heel region.

Abstract: A roller skate includes a boot and at least a pair of wheels that are mounted to an underside of the boot. The wheels are oriented at an acute or perpendicular angle to the traditional straight ahead longitudinal direction of the boot so that, in use, the user moves at least somewhat laterally when skating. The orientation of the wheels can be adjusted with a lock-down device being used to fix the wheels in a desired orientation.

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: The present invention relates to a roller skate frame. The roller skate frame includes a plate being pressing molded into a main frame of the roller skate comprising two wheel-mounting plates corresponding to each other, and a front bottom connecting face and a shoe-mounting plate connecting thereto. The front bottom connecting face and the shoe-mounting plate are spaced apart with a suitable distance. Further, the front bottom connecting plate is formed by an upper and a lower bridging plate corresponding to each other, and both of which are positioned with a fastener hole respectively.

Abstract: A method of customizing a blade holder for an ice skate, comprising: (a) providing to a customer a blade holder body being at least partly made of a clear material and comprising a front pedestal with a front inner surface, a rear pedestal with a rear inner surface and a bridge portion interconnecting said front and rear pedestals, the front and rear inner surfaces defining respective front and rear cavities; (b) providing to the customer a plurality of graphical elements; (c) receiving from the customer an indication of a certain graphical element selected from the plurality of graphical elements; and (d) applying the selected graphical element to one of the front and rear inner surfaces such that the selected graphical element is visible through the clear material.

Abstract: An in-line skate which includes a plurality of wheels mounted to a frame each having a primary contact surface which contacts a skating surface to support the skater when the skate is in a generally upright position, and at least one secondary rotatable contact surface disposed at a level above the primary contact surfaces when the skate is in a generally upright position and positioned to contact the skating surface only when the in-line skate is inclined beyond a selected angle from the vertical. The length of the wheelbase formed by the secondary contact surface is shorter than the length of the wheelbase formed by the primary contact surfaces. By effectively changing the length of the wheelbase of the in-line skate when the in-line skate is at a certain angle from the vertical, a tighter turning radius may be achieved.

Abstract: An ice skate chassis is configured so that a user can adjust the pitch of the skate chassis between a plurality of discrete pitch positions. The pitch is adjusted by locking the ice blade at a desired angle relative to a bladeholder of the chassis. The blade can be positively locked at a plurality of discrete, repeatable angle positions so that the angle will not slip or creep during skating.

Abstract: An angled large wheel and out-of-line roller skate having an engineered plastic frame forming fore and aft downwardly-angled openings extending in a lateral direction in lateral frame members. Each of the openings has secured therein an end of a respective fore or aft axle, each of which in turn rotatably supports a canted fore or aft wheel. Each of the wheels has an engineered-plastic wheel hub and a tire thereon. The axles each have stepped configurations corresponding to the stepped configurations of their respective frame openings. Axle nuts at the ends of the axles are secured relative to the frame by respective retainer clips. The fastener securing the fore retainer clip to the frame can also secure a frame cap to the top toe end of the frame. Wheelwashers having outward stepped configurations are sandwiched between the frame and the bearing races of the wheels. A pair of tapered posts extend laterally out from the boot cradle, which is attached to the frame, and towards the rear wheel.

Abstract: An inline skate wheel assembly includes a loop that has a centrally disposed opening extending therethrough. The loop has an inner perimeter surface having a ring integrally attached thereto. A hub assembly includes a cylinder that has a first end and a second end. The first and second ends are open. A first perimeter flange is attached to an outer surface of the cylinder and abuts the first end. A second perimeter flange is attached to the outer surface of the cylinder and abuts the second end. The cylinder has a break therein so that a first portion and a second portion of the cylinder are defined. An axle may be extended through the cylinder when the first and second portions are extended into the loop and abutted against the ring so that the cylinder is rotatably mounted on the axle. The axle is secured to an inline skate track.

Abstract: Disclosed herein is a frame for an in-line roller skate and as well as a roller skate having such a frame. This roller skate has a shoe and a wheel supporting frame extending therefrom said shoe for supporting aligned wheels. The frame includes a main frame body mounted to the shoe and at least one auxiliary frame body for supporting a wheel and being pivotally mounted to the main frame body. A resilient and deformable member is interposed between the auxiliary frame body and the shoe. The auxiliary frame body is so pivotable as to provide for moving the wheel towards and away the shoe for a distance determined by the extension and compression of the resilient and deformable member.

Abstract: An in-line skate frame assembly has a rigid frame and an elongate grinding insert releasably engaged with the frame. The frame and insert are secured together to the sole of a shoe or boot by frame bolts extending through upper portions of the frame and insert. The frame has spaced side walls with downwardly facing recessed regions in which the insert is mounted. The insert extends along a major portion of the length of the frame and has a downwardly facing, centrally located grinding surface which terminates short of the opposite ends of the insert. Different inserts with grinding surfaces of different shapes and lengths are releasably secured to the frame for performing alternative grinding maneuvers.

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: An inline skate includes a boot having a sole, a toe area, and a heel area. The skate has a plurality of wheels each wheel respectively including: a bearing having an inner race, and a wheel mount rigidly mounted between the wheel frame and the inner race for mounting the inner race to the wheel frame in a rotationally fixed manner.

Abstract: An inline skate mounting a pair of air tubes is invented for absorbing shock transmitted to its wheels so as to allow the use of rigid wheels, and to protect the rider's knees and ankles from shock. The inline skate comprises a frame having insertion compartments for mounting the shock absorbers, guide recesses, brackets for defining desired spaces, and a wheel holder having supporting plates. The wheels are coupled to and supported by the sides of the supporting plate and inserted into the guide recesses so that the wheel holder moves upward and downward when an external force is applied so as to transmit the external force to the shock absorbers. The shock absorbers are inserted into the insertion compartments and filled with air to absorb the external force when the wheel holder moves vertically. Since the wheel holder moves vertically as the skate traverses an uneven surface, the inline skater can balance stably and safely.

Abstract: The skateboard wheel and axle assembly includes an axle rigidly mounted in a hangar, with opposite ends of the axle extending from the hangar. Each end of the axle has an axial blind bore defined therein closed by an end cap and a plurality of holes defined radially adjacent the end cap. A spring-biased detent pin slidably mounted in the bore urges a plurality of detent balls to partially extend from the radially disposed holes. The detent balls engage an annular groove defined in the inner race of the outer wheel bearing to retain the wheel on the axle. The detent pin has a release arm extending through aligned slots in the axle and the hangar that can be retracted, compressing the bias spring, in order to withdraw the detent balls from the groove so that the wheel can be pulled off the axle.

Abstract: A shield plate (2) of a wheel roller bearing of a roller skate, which is installed outside the roller bearing for preventing the contamination of the roller bearing, characterized in that the shield plate extends over the outer race (7) of the roller bearing and that the shield plate is fixed directly or by means of attachments tightly on the inner race (10) of the roller bearing.

Abstract: An inline skate having training wheels and a kit for converting a regular inline skate to one having training wheels. The kit comprises a left inline skate training wheel similar to any of the four regular inline skate wheels and having a centrally disposed aperture therethrough, a right inline skate training wheel similar to any of the four regular inline skate wheels and having a centrally disposed aperture therethrough, an axle, left and right lock nuts and washers to separate the inline skate training wheels from the lock nuts and from the left and right longitudinal frame members that the regular wheels attach to. The axle traverses the apertures and the holes in the frame members to securely hold the right and left inline skate training wheels to the left and right longitudinal frame members, optionally using compression sleeves. An inline skate having training wheels permanently attached is also shown.

Abstract: A method of customizing a blade holder for an ice skate, comprising: (a) providing to a customer a blade holder body being at least partly made of a clear material and comprising a front pedestal with a front inner surface, a rear pedestal with a rear inner surface and a bridge portion interconnecting said front and rear pedestals, the front and rear inner surfaces defining respective front and rear cavities; (b) providing to the customer a plurality of graphical elements; (c) receiving from the customer an indication of a certain graphical element selected from the plurality of graphical elements; and (d) providing one of the front and rear cavities with the selected graphical element such that the selected graphical element is visible through the clear material.

Abstract: The present invention discloses a roller assembly of an in-line roller skate, the roller assembly comprising a roller frame and a plurality of roller wheels, of at least two different sizes, which are fastened pivotally with the roller frame, such that the roller assembly may rock forwards and backwards upon a surface.

Abstract: A kit for modifying an in line skate to role in one direction only consists of locking plate having a rectangular central hole an a shoulder along one edge, a tubular sleeve having a rectangular head sized to non-rotatably fit within the central hole of the plate, and a wheel with a built in one way clutch with a central opening sized to receive the tubular sleeve.

Abstract: In accordance with one embodiment of the present invention there is provided a vehicle with a training device for use on a skateboard. The training device includes an assembly disposed about one of a plurality of axles of the skateboard. The assembly has a transfer gear horizontally moveably to a first position to engage a flywheel wheel to provide resistance to the skateboard and to charge the flywheel when a wheel corresponding to one of the plurality of axles spins, such that when the flywheel is charged the flywheel provides inertia to the wheel. The training device may also be designed to be entirely incorporated with a single wheel for use with in-line skate or scooters.

Abstract: A wheel with an asymmetrical cross-section for use with a roller skate. The wheel also has a tread portion that can be easily and inexpensively replaced. An apparatus for multi-line roller skates that has two or three lines of wheels. The wheels in the center line have a coefficient of friction that is lower than the coefficients of friction of either of the outer lines of wheels. The wheels in the outer lines have asymmetrical cross-sections, while the wheels in the center line have symmetrical cross-sections. A multi-line roller skate that employs these technologies is disclosed. Also disclosed is a method for improving roller skate performance employing the aforementioned technologies.

Abstract: The two skates steered by leaning sideways normally curve along circles of similar curvature. As the two circles are offset by the legs' distance they intersect. In order to avoid this disadvantage it is desirable that the outer leg's curved track has a larger radius than the inner leg's curved track. Using lean-controlled steered skates with tiltable wheels comprising a parallelogram closed fourbar linkage including two horizontal cross-guides the purpose is achieved by affixing the two cross-guides rotatably to extensions of the frame in such a way that the vertical projection of the rotation axis makes a solid angle with the vertical projection of the pivot axes of the closed fourbar linkage.

Abstract: An inline skate including air tubes for absorbing shock transmitted to respective wheels so as to use rigid wheels, and to protect the knees and ankles from shock. The inline skate includes a frame having insertion holes receiving shock absorbers, guide recesses, and brackets for defining desired spaces, a wheel holder having supporting plates in which the wheels are coupled to and supported by the sides of the supporting plate and inserted into the guide recesses so that the wheel holder is moved upward and downward by applied external force so as to transmit the external force to the shock absorbers, and the shock absorbers inserted into the insertion holes and filled with air so as to absorb the external force when the wheel holder moves vertically. Since the wheel holder moves vertically along the surface of the uneven ground, the user can balance in safety.

Abstract: The present invention provides a suspension system for in-line skates. The in-line skate includes a boot and a tracking system attached to the sole of the boot. Opposing rocking arms that hold the wheels are connected to the tracking system using a truncated axle. In addition, an adjustable spring can be configured between the opposing rocker arms.

Abstract: A retractable skate and method using armatures that extend for skating and retract for walking. It is preferred that the armatures may be locked into position. It is also preferred that the armatures fasten to a pair of wheels, a frame holding a configuration of wheels, or an ice blade.

Abstract: A roller skate includes a fixing seat, a plurality of wheels, and a safety device mounted on the wheel. The safety device includes a safety member mounted on the fixing seat and urged on the wheel, so as to adjust a rotation speed of the wheel. Thus, the roller skate can be fixed on the ground without rotation by the safety device, so that the learner can stand on the roller skate without movement so as to practice his/her balance. In addition, the safety member is slightly loosened from the wheels, so that the wheels are rotated at a lower speed, thereby facilitating the learner practicing the skating skill.

Abstract: A retractable skate and method using armatures that extend for skating and retract for walking. It is preferred that the armatures may be locked into position. It is also preferred that the armatures fasten to a pair of wheels, a frame holding a configuration of wheels, or an ice blade.

Abstract: The invention discloses an effective mechanical means to safely control speed and brake on in-line skates in a natural way that is comparably used in skiing. The assembly consists of wheel frame 4 and wheel 1f, having a centered spherical bearing structure that is in effect a dynamic 2-Element Hub (2 and 2a) containing axle bearings 5 and axle 8, which allows wheel 1f to rotate both vertically and at angle as indicated (FIG. 2B). When at an angle or “canted” the wheel's neoprene tire contacts friction strip 4a. That friction contact at 11 safely slows or brakes the wheel, constituting an “edging friction” control function comparable to “edging” skis. When the “edging” force is released by the in-line skater, self-aligning radial elastomer disk “springs” 7a, on each side of the wheel (each with an axle bearing 5 at its core and each in a constant equal and opposing tension/compression state), force the wheel back into (and maintains) a vertical coasting position.

Abstract: A modular roller skating apparatus includes a frame having a pair of interchangeable frame portions. A plurality of wheel assemblies is axially mounted to the frame in an in-line configuration, each assembly having a pair of releasably coupled hub portions. When coupled, the hub defines a female receptacle for detachably coupling to a corresponding male structure of a tire such that worn tires may be conveniently replaced without replacing an entire wheel assembly. A boot having a lower portion for receiving a skater's foot is releasably mounted atop the frame and includes conventional lacing. An upper boot portion is provided for surrounding a skater's ankle. Laterally spaced eyelets along respective edges of upper and lower portions enable another lace to adjustably connect the boot portions and, more particularly, to provide enhanced support to a skater's ankle and leg.