Abstract: A mobile support system having a central region that allows the legs to move in an unobstructed manner and providing an upper body support assembly where the weight is distributed between the elbow region and hand region of the individual for a desirable weight distribution for assisted bipedal motion such as walking or running.

Abstract: According to one disclosed embodiment, a skateboard deck comprises a carbon-fiber shell surrounding a longitudinally-extending interior space. The carbon-fiber shell has an upper inner surface and a lower inner surface opposite the upper inner surface; and a longitudinal beam disposed within the interior space. The longitudinal beam has an upper flange bonded to the upper inner surface of the shell, a lower flange bonded to the lower inner surface of the shell, and a web interconnecting the upper flange and the lower flange. The skateboard deck further comprises a generally rigid exterior portion encasing the core member. The exterior portion comprises at least one layer of wood disposed above or below the shell.

Abstract: A flexible skateboard may include a pair of direction casters mounted for steering rotation a twistable one piece skateboard. A center section may be made sufficiently narrower than outboard foot support areas which may be twisted by a rider to add energy for rolling motion to wheels in the casters. The center section may also be made sufficiently resistant to twist so that the skateboard may be ridden as a conventional, non-flexible skateboard.

Abstract: A metal grip for T-bar according to the present invention has a T-bar, a front wheel, a front wheel fork, a board, and two or more rear wheels. The metal grip includes a locking bump and a metal grip. The locking bump is for locking the T-bar to the front wheel fork. The metal grip has a band portion, a fastening device, and a plurality of locking hooks. The T-bar is assembled to the front wheel fork for the locking bump on the T-bar to be locked between the locking hooks of the metal grip. And the band portion and the fastening device enclose and hold the assembled T-bar and front wheel fork.

Abstract: A stable and lightweight golf cart comprises: an elongate frame has a front fork having a lower forked portion attached to a front wheel, a central portion pivotably attached to a front portion of the elongate frame, and a top portion carrying a steering member; a drive means and rear driven wheel attached to a rear portion of the frame; and, two laterally extended balance wheels attached to and carried by a central portion of the frame. In use the balance wheels are positioned outwardly thereby maintaining the golf cart in an upright position. In a preferred aspect of the invention the golf cart frame comprises a platform and each of the balance wheels are attached to one end portion of an arm having an opposite end portion which is hingably attached to a rear of the central portion of the platform so that the balance wheels may swing laterally outward from the platform to an in-use position.

Abstract: A scooter with a combination front fender and brake includes a frame, front and rear wheels mounted to the frame for rotation, a front fork assembly rotatable by a rider to steer the scooter, a pivot in the front fork assembly, a fender mounted for rotation on the pivot and a brake control lever assembly for causing the fender to rotate into contact with the front wheel to cause a braking action.

Abstract: A method of personal locomotion including stepping onto first and second wheeled shoe accessories and engaging the first wheeled shoe accessory against a support surface to roll on the second wheeled shoe accessory in a desired direction at an angle to a normal walking direction. The wheeled shoe accessory includes a rigid board having a length sufficient to span a width of a shoe placed sideways across the board, with the board supporting at least an arch region of the shoe. At least one axle assembly is secured to a lower surface of the board. The user experience is similar to that of a skateboard, but with decoupled feet for individual maneuverability of each wheeled shoe accessory.

Abstract: An illuminated scooter includes a platform having a pivotal, length-adjustable handlebar at a front end and a wheel at a back end. Mounted on the upper surface of the platform adjacent the wheel is a generator including a drive shaft with a roller at a distal end thereof. The generator is biased rearwardly whereby a rider can selectively move the roller into engagement with the scooter rear wheel. When the roller is moved into engagement with the rear wheel, the generator powers a plurality of LED's that are fastened to each of two side edges of the platform. An associated microprocessor selectively activates certain segments of the LED's according to the scooter speed.

Abstract: A convertible wheelchair and walker having a frame constructed of two front legs connected to each other by upper and lower front cross members, each cross members having a u-shape that is affixed to the front legs by a bracket attached to the arms of the cross member and front legs, and two rear legs pivotally connected to the front legs and connected to each other by at least one upper rear cross member also having a u-shape and affixed to the rear legs by a bracket attached to the arms of each cross member and rear leg. Two front wheels are attached to the front legs which are curved forward to elongate the frame and provide increased stability. Two rear wheels attached to the rear legs, and footrests are attached to the front legs.

Abstract: A two-wheel battery-powered vehicle has a platform and two wheels connected to the platform, wherein a battery-powered wheel drive drives the wheels. An attachment is connected to the platform and a sensor device is arranged in the platform. A person standing on the platform and engaging the attachment moves the platform into an angle position corresponding to a body position of the person. Based on the angle position of the platform, the sensor device controls the wheel drive such that, by acceleration or deceleration, the vehicle and the person standing on it are kept in a balanced position. A right/left control controls turning of the vehicle in a traveling direction by driving the wheels at different speed. The attachment has a leg support device for at least one leg of the person standing on the platform for keeping the platform at a desired angle position.

Abstract: An apparatus for the transfer of linear human power to a rotating member is disclosed, which is adaptable to exercise equipment, wheeled chairs, scooters, bicycles, tricycles, etc. The hands of the operator apply the power during the downward stroke of an up-and-down pumping action, and many of the operator's muscle groups are employed. Various drive ratios are provided, and the mechanism is simple with few components. A preferred embodiment is detailed in which the apparatus is used to propel a scooter.

Abstract: A swinging device for a wheel set includes a center tube, an axle pipe and a restrictor. The center tube has round plates at the rear section. The round plates comprise lugs thereon. The axle pipe has a curved receiving base with a pair of fins extending from respective sides of the receiving base. The fins comprise through holes for insertion of bolts. The restrictor is pivotally connected to the rear section of the center tube and comprises ditches corresponding in position to the round plates of the center tube, so that the lugs of the round plates may be placed therein and slide along the ditches. The restrictor further comprises through holes corresponding in position to the through holes of the receiving base and the bolts. An elastic piece made of plastic material is placed between the rear section of the center tube and the axle pipe.

Abstract: A walking aid apparatus includes a pair of rods each having a first end and a second end. A central member is attached to the second ends. A pole is attached to the central member. A rear wheel is rotatably coupled to the pole. A sleeve is attached to each of the first ends. A post extends through the sleeve and is selectively rotated with respect to the sleeve. The post has an upper end positioned above the sleeve and a lower end positioned below the sleeve. A pair of legs is attached to an outer surface of the post below the sleeve. Each of the legs extends downward below the lower end. An axle is attached to the legs. Each of a pair of front wheels is rotatably attached to the axle. A leg receiving member is attached to and extends upwardly from the rods.

Abstract: An “Integrating Axle” for scooters that feature attributes sufficient to result in a stable free standing utility vehicle. Where the “Integrating Axle” is adaptable as embodied in a bolt on steering, suspension and axle shaft arrangement structurally rendered to affix a utility carriage to a two-wheel board style ride scooter in a forward of standing rider position set on four ground contacting members situated in a diamond stance to the longitudinal axis. An adaptive device configured to increase the wheel diameters of the primary forward support ground contacting members to a diameter of 53.34 centimeters/21 inches. A device where force, fulcrum and load are displaced to minimize jarring and other surface impacts. A utility with improved safety quotients that affirmatively expands usage of two wheel board scooter.

Abstract: Brake assemblies, and scooters and skateboards incorporating the same. The brake assemblies include an actuator that is positioned rearward of the body of the scooter or skateboard and includes a brake member that is selectively pivoted or otherwise moved into braking contact with a rear wheel assembly responsive to rider-applied braking inputs to the actuator. In some embodiments, the rear wheel assembly includes a truck with a chassis that is pivotally coupled to the body and to which the rear wheels are rotatably mounted. In some embodiments, the brake member is adapted to apply braking forces to a ground-contacting surface of at least one of the rear wheels responsive to braking inputs applied by a rider to the actuator. In some embodiments, the brake assembly is configured to maintain its orientation relative to the rear wheel regardless of the pivotal orientation of the body relative to the chassis.

Abstract: A wheeled scooter is integrated with an event forum seat. The apparatus is configured to convert between a first configuration in which the apparatus is operable as a scooter for transportation and a second configuration in which the apparatus is operable as an event forum seat.

Abstract: A skateboard includes a deck with two trucks connected to an underside of the deck and each truck has a case with two axles so that two rollers are rotatably connected to the two axles. Two protection members are connected to the two cases respectively and at least one cushion member is connected between respective one of the protection members and respective one of the cases. A rolling shaft is connected each of the two protection members and includes a mediate section which extends out from an opening of the protection member corresponding thereto so as to provide smooth grinding.

Abstract: A steering and transmission mechanism interconnects the front and rear wheels of an in-line vehicle which includes rigid steering members or links operable by manual control for selectively determining rear wheel positioning from a normal turn or straight position to a crab position. Each member has adjacent ends selectively coupled together by a lock-arm movable in response to a manual control to change rear wheel positions. The steering members are slidably carried on a shifter housing and a resilient device is employed for returning steering from the crab position to the normal steering position.

Abstract: A scooter device having a flexible, tiltable frame structure and biased direction rear wheels. The scooter may be of a type that achieves forward propelled by side-to-side movement of a user. The frame structure may include a flexible member or members and/or incorporate other flexible or moveable components to achieve desired performance. The frame structure and steering mechanism may be moveable into a more compact form for storage or transport. A brake arrangement and other features are also disclosed.

Abstract: A skate brake particularly suited for an inline skate includes a braking carriage formed of left and right plates spaced apart by axles that support rollers thereon. The rollers engage the wheels of the skate when the carriage is maneuvered to the appropriate elevation, and the momentum of the wheels is arrested as a result of a frictional bearing of the rollers against the carriage surface. The carriage is raised and lowed by a rocker mounted below the skate and coupled to the carriage plates, where rotation of the rocker drives the plates and the carriage downward such that the rollers contact one or more wheels. The rocker is actuated by a linkage that includes a pushrod and a second rocker that is mounted to the skate boot, allowing the user to control the braking carriage by applying pressure to a rear location of the boot.

Abstract: A steering knuckle structure is incorporated with an upright pipe and a shaft wherein the upright pipe is able to twist. The steering knuckle structure comprises a fastener, a sleeve and a pair of lids. A connector is provided at the bottom of the upright pipe. The sleeve has its two ends covered by the lids. The shaft is pivotally connected to the lids. The sleeve comprises a connecting seat transversely secured at the center portion thereon. The connecting seat comprises a pair of protruding plates at respective ends. Each protruding plate has a hole at the center. The connector is placed in the connecting seat between the two protruding plates. The two holes of the protruding plates are aligned with the connector, and the fastener is inserted into the holes to secure the upright pipe to the sleeve.

Abstract: An amusement-type vehicle is provided particularly for doing so-called wheelies having a short wheel base upon a platform-type base with at least two side by side wheels forwardly and one wheel rearwardly upon which wheelies are performed and having a central handle by which the vehicle may be controlled.

Abstract: A skateboard includes a deck with two connection members connected to an underside thereof the deck and two trucks are connected to the two connection members respectively. Each truck has a main body and a transverse tube, and two wheels are rotatably connected to two wheel frames connected to two ends of the transverse tube. A truck spring member is received in each main body and has a first recess with which a protrusion on each connection member is engaged. The truck is rotatable about a first pin extending through the main body and the truck spring members, and is connected to the connection member.

Abstract: The present invention relates to a cordless braking system for a mobility-aiding device, such as a wheeled walker (a rollator) or a transport chair. The cordless braking system includes a brake actuating linkage, disposed inside the leg and handlebar members of the mobility-aiding device, which extends during height adjustment of the handlebars. The brake-actuating linkage and the leg/handlebar of the mobility-aiding device are designed to enable a locking pin or bolt to extend all the way therethrough to ensure that all of the height-adjustable members are secured together during use.

Abstract: A tri platform control device on which a rider stands on to either ski or skate. The device includes a front vertical platform, two lateral platforms with footpads attached. Attached to the footpads are either wheels or skis. The vertical platform has a steering shaft fitting allowing the front ski to turn and collapse in case of a sudden impact, giving a safer ride. A spring loaded hub device attaches the lateral platforms to the vertical platform. This device adjusts the vertical platform. It is also used to fold the platforms up. The spring and hub assemblies on the vertical platform allow the parallel skis to lean from side to side. This device also allows the rider to lift the front ski off the ground to avoid obstacles. The footpad enables riders to push either the toe or heal down for better performance. An additional version has adjustable lateral platforms.

Abstract: A foldable two wheeled scooter includes a steering post with a front wheel at a lower end and handlebars at an upper end. A support tube connects with a folding mechanism enclosed in a protective housing and supportively connects with a running board having a rear wheel. The protective housing prevents a user from being harmed when moving the scooter from an upright position to a folded down position.

Abstract: An electric skateboard is capable of detecting a load applied from a rider accurately without influence from various positions of the rider on the board and without influence from various road conditions. The electric skateboard includes a board arranged to receive a load from the rider, a load detection sensor arranged to detect the load received by the board, a front wheel provided on a lower surface of the board, an arm which rotatably supports the front wheel, a first frame connected with the arm, a second frame fixed to the board, and a shaft connecting the first and second frames. The load detection sensor is sandwiched by the first and second frames. A rear wheel is provided on the lower surface of the board and has a construction that is similar to that of the front wheel.

Abstract: A skateboard having a front board, a rear board, a connecting element which interconnects the front board and the rear board in a spaced relationship, at least one direction-caster mounted on the underside of each of the front board and the rear board; and the connecting element comprises an elastic member so that the connecting element can be elastically twisted by application of at least one of a twisting or bending force and restores to its original shape when the force is removed.

Abstract: An assembly is disclosed for mounting a truck having multiple mounting holes passing therethrough. The assembly includes a pair of removable fasteners and a body having a pair of spaced apart holes. Each of the holes passes through the body, corresponds to a different one of the mounting holes of the truck, and is adapted to receive one of the removable fasteners. A described method for making the assembly includes providing a solid block of a hard substance. A pair of spaced apart holes are formed in the block, wherein each of the holes passes through the block and corresponds to a different one of the mounting holes of the truck. Each of the holes in the block is adapted to receive a removable fastener. A method for attaching a truck to a mating surface via the assembly is also disclosed.

Abstract: A structure of a foot propelled scooter is described. Because foot propelled scooter is put into motion by using foot oscillation, thus creating an effect of exercise and frolic to the rider. The foot propelled scooter has a steering handle which is operatively coupled to a set of front wheels, the steering handle is rotatable in a steering column, a retractable bar is pivotally attached to the steering column, an adjustable rear bar is adjustably and pivotally attached to the retractable bar, a foot frame having a set of wheels disposed underneath is pivotally mounted on each end part of the adjustable rear bar. A foot brake controllable by a foot is mounted on retractable bar. The rider swings both feet alternately in a forward and a backward direction to make a pushing contact to put the scooter into forward motion.

Abstract: A brake device for a scooter includes a brake pedal having a stepping portion, at least one fender portion extending from at lease one side of the stepping portion, and at least one tubular member extending downward from the stepping portion. The fender portion is located above a wheel of the scooter. An elastic element mounted in the tubular member. A coupling seat is supported by a frame of the scooter and includes at least one coupling member on a top thereof. The coupling member is received in the tubular member and slidable along a vertical direction. The elastic element has a lower end abutting against a top face of the coupling member for biasing the fender portion away from the wheel. The stepping portion is pressable to move the fender portion downward to press against the wheel for braking purposes.

Abstract: A skating training device with a V-shape frame that has a front end and two rear portions with handles. The front end includes a wheeled leg and the rear portions include rear legs that terminate with skating blade assemblies. A brake system includes actuating levers that transmit a force of predetermined magnitude to an elongated bar that is pivotally mounted to the blade assemblies and include a braking teethed plate mounted thereto so that predetermined movements of the actuating lever result in causing the teethed plate member to sink against the ice surface. Optionally, the blade assemblies can be replaced with wheel assemblies for land skating.

Abstract: A scooter is described herein having control cables for use in guiding the scooter. In the preferred embodiment a cable is used to straighten the rear wheels which are connected in tandem and a steering column with a t-top is used to steer the front wheels. In an alternate embodiment of the invention a pair of cables are joined to the steering columns and are used on both the front and rear wheels for steering purposes. Both embodiments of the invention utilize a brake assembly connected to a rearward platform extension. When the platform extension is depressed, brake pads engage the wheels to slow the motion of the scooter.

Abstract: A wheelchair is disclosed having two adjustment structures for allowing adjustment of the elevation of two handlebars relative to the two parallel vertical main frame bars thereof, each adjustment structure including a holder block fixedly provided at the top of the respective vertical main frame bar to accommodate the respective handlebar, a holding down block movably mounted in the holder block, and a locking lever pivoted to the holder block for moving a locating rod into one of a vertically aligned series of locating holes at the respective handlebar and forcing the holding down block against the respective handlebar.

Abstract: A swinging device for a wheel set includes a center tube, an axle pipe and a restrictor. The center tube has round plates at the rear section. The round plates comprise lugs thereon. The axle pipe has a curved receiving base with a pair of fins extending from respective sides of the receiving base. The fins comprise through holes for insertion of bolts. The restrictor is pivotally connected to the rear section of the center tube and comprises ditches corresponding in position to the round plates of the center tube, so that the lugs of the round plates may be placed therein and slide along the ditches. The restrictor further comprises through holes corresponding in position to the through holes of the receiving base and the bolts. An elastic piece made of plastic material is placed between the rear section of the center tube and the axle pipe.

Abstract: A skateboard having a front board, a rear board, a connecting element which interconnects the front board and the rear board in a spaced relationship, at least one direction-caster mounted on the underside of each of the front board and the rear board; and the connecting element comprises an elastic member so that the connecting element can be elastically twisted by application of at least one of a twisting or bending force and restores to its original shape when the force is removed.

Abstract: A foldable two wheeled scooter includes a steering post with a front wheel at a lower end and handlebars at an upper end. A support tube connects with a folding mechanism enclosed in a protective housing and supportively connects with a running board having a rear wheel. The protective housing prevents a user from being harmed when moving the scooter from an upright position to a folded down position.

Abstract: A steerable wheeled sport conveyance is disclosed employing a unique diamond shaped footprint especially adapted for riding at relatively high speeds over various types of terrain. A first set of singular in-line steering wheels are rotatably mounted on the opposing ends of an elongated frame in a manner that also allows one or both of them to pivot on a vertical axis, and a second set of parallel wheels are mounted in an opposing manner across the longitudinal tilt axis of the conveyance. The opposing parallel wheels are attached to corresponding struts, which in turn are independently pivotably mounted near the longitudinal centerline of the frame, and are rotatable in a plane perpendicular to the rotationary plane of the two sets of wheels. Side to side tilting motions of the frame relative to the opposing struts creates vertical displacements between them, thus providing the steering forces that are conveyed and connected to the axles of one or both of the in-line steering wheels.

Abstract: A steering control mechanism for a kick scooter includes a mounting seat connected fixedly to a front end of a footplate, a wheel seat with a fixed camming element, and an inclined rotating shaft extending through the wheel seat and connected fixedly to the mounting seat so as to allow for rotation of the wheel seat about the rotating shaft. A pressing unit is disposed slidably on the mounting seat, and is formed with a follower unit. A biasing unit biases the pressing unit to move relative to the mounting seat so as to press the follower unit of the pressing unit against the camming element of the wheel seat, thereby turning the camming element toward a central position.

Abstract: A foldable scooter including a support device onto which a steerable front wheel is mounted and a rear carriage. The carriage is connected to the support device at the front of the carriage. The carriage is provided with at least one wheel at the rear. The carriage may be folded against the support device to form a compact unit which may be carried or wheeled. In an expanded position of the scooter, the front of the said carriage abuts a stop face connected to the support device. A rigid stay is connected to the carriage, which is pivotally connected at its first end to a mid-section of the carriage and is pivotally connected at its opposite end to the support device.

Abstract: An articulated vehicle includes a rear frame and a front frame linked by an articulation associated with the device for removably locking controlled by a pendular member mounted oscillating on the front frame between a median position for unlocking the articulation and a spaced apart position for locking the articulation, at least when the vehicle is stopped. The vehicle comprises elements for controlling the unlocking of the articulation, at least during start-up, including an auxiliary platform integral in rotation with the rear frame and comprising, at least, two footrests arranged at substantially the same level relative to the ground, on either side of the articulation axis and constituting each, on the side towards which the front frame is inclined, a support for the front frame to be set upright by the vehicle driver, the pendular member returning to its median position for unlocking the articulation.

Abstract: An improved motor mount adjustably tensions the chain in a chain and sprocket driven vehicle. The vehicle has a frame, at least one driven wheel rotating from a wheel rotation point on the frame, a driven sprocket driving the driven wheel. A motor is mounted to the frame and has a driving sprocket at a motor sprocket rotation point on the motor. The driving sprocket is disposed in a plane including the driven sprocket, and powers a chain. An improved mount for mounting the motor from the frame relative to the driven sprocket includes a motor mount for fastening to the engine for disposing the driving sprocket from the engine overlying the driven sprocket powering the driven wheel. A motor mount pivot is provided on the motor mount for pivoting the driving sprocket along the plane including the chain and driven sprocket. A keeper slot is configured within the motor mount, the keeper slot being coaxial about the pivot to enable a keeper to slide relative to the keeper slot during pivot of the motor mount.

Abstract: An electric vehicle with an innovative folding and positioning structure of the head tube includes a head tube having a bottom connected to the top of a top tube through a movable joint, constituting the swivel part of the head tube. The top of the top tube has a ratchet edge in a circumferential design. The bottom of the head tube is installed with a ratchet block, being pulled up and down to joggle with or detach from the ratchet edge. A transmission shaft, pivoted and located in the slot of the head tube, can be shifted upward and downward. A positioning component, shifting downward through forcing the transmission shaft, enables the joggling between ratchet edge and ratchet block. An elastic component, which pushes upward the transmission shaft when the positioning component is in a release state, and then enables the detachment of ratchet edge from ratchet block.

Abstract: The invention concerns an articulated vehicle comprising a rear frame (1) and a front frame (2) linked by an articulation (3) associated with the device (30, 6) for removably locking controlled by a pendular member (4, 62) mounted oscillating on the front frame (2) between a median position for unlocking the articulation and a spaced apart position for locking the articulation, at least when the vehicle is stopped.

Abstract: A steering knuckle structure is incorporated with an upright pipe and a shaft wherein the upright pipe is able to twist. The steering knuckle structure comprises a fastener, a sleeve and a pair of lids. A connector is provided at the bottom of the upright pipe. The sleeve has its two ends covered by the lids. The shaft is pivotally connected to the lids. The sleeve comprises a connecting seat transversely secured at the center portion thereon. The connecting seat comprises a pair of protruding plates at respective ends. Each protruding plate has a hole at the center. The connector is placed in the connecting seat between the two protruding plates. The two holes of the protruding plates are aligned with the connector, and the fastener is inserted into the holes to secure the upright pipe to the sleeve.

Abstract: A skateboard truck assembly that eliminates wheel bite without sacrificing the turning responsiveness thereof. The truck assembly includes a plurality of set screws disposed in the ring-shaped member of the hanger adjacent to the kingpin. The longitudinal axis of the plurality of set screws is generally parallel to the axle and generally perpendicular to the longitudinal axis of the kingpin. The distances between the plurality of set screws and the kingpin, adjustable by the user, determines the amount of wheel bite prevention. When the hanger pivots through an angle and causes a set screw to contact the kingpin, further pivoting of the hanger stops. In a further feature the shaft of the kingpin includes a plurality of flat surfaces adjacent to the plurality of set screws.

Abstract: An improved scooter incorporates a novel or novelty illumination or lighting effect. Scooters have undergone an upsurge in popularity in recent years, e.g. because of innovation such as folding scooters and micro-scooters. There is provided a scooter or other self or foot propelled vehicle or the like having a platform for supporting a user, the platform having an upper surface having illumination means. The platform comprises a foot-plate, and is at least part transparent or translucent. The platform comprises a first portion extruded from metal and a second portion, which is at least part transparent or translucent, and preferably made from a plastics material.

Abstract: A personal cart comprises a mounting structure secured onto two parallel and aligned suspension members near their respective proximal longitudinal ends so as to rest thereon, and extending both upwardly and longitudinally so as to generally define an angle with said suspension members, two driving wheels, each mounted to a respective suspension member near its proximal end, two driven wheels, each rotatably mounted to a respective suspension member near its distal end, and actuating means coupled to both driving wheels for selectively causing rotation of at least one of said two driving wheels. The actuating may includes a controller and a rechargeable battery or be in the form of a hand actuating device including two endless belts mounted along angled portions of the mounting structure. The personal cart comprises few components and is relatively compact which provides a long autonomy in the case of an electrically actuated embodiment, and less effort to actuate in the case of the hand actuating embodiment.

Abstract: A skateboard is constructed to provide a natural ride and good operability without adversely influencing a motor controller and batteries. The skateboard includes a board, wheels provided on a bottom side of the board at front and rear regions thereof, a motor controller for supplying the wheels with rotary power, a case provided on a bottom side of the board and housing the motor controller, and fixing bolts fixing an approximately central region of the case to the board, leaving front and rear end regions of the case free.

Abstract: A steering knuckle structure includes a front strut, a connecting device, and a sleeve. The front strut has a connecting pipe at the bottom. The connecting device comprises an upper section and a corresponding lower section. Both the upper section and the lower section comprise extending edges with holes thereon. The upper section further comprises a slot for the front strut to insert there through. The lower section is transversely secured on the middle portion of the sleeve for the connecting pipe of the front strut to seat thereon. The upper section and the lower section are secured together to wrap the connecting pipe therein, which enables the front strut to swing relative to the sleeve.