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 skateboard includes a deck, a rear assembly and a front assembly. The rear assembly is attached to the deck. The front assembly includes a base plate, a friction-resistant plate, a hanger, a front wheel, a baring and a king pin. The base plate is attached to the deck, made of a plastic material, and formed with an inclined face. The friction-resistant plate is made of a friction-resistant metal material and located against the inclined face. The hanger includes a ring and two branches extending from the ring. The front wheel is attached to the branches. The bearing is located in the ring. The king pin is inserted in the bearing located in the ring, the friction-resistant plate and the base plate so that the axis of the king pin extends downward and toward the rear assembly.

Abstract: A multifunctional vehicle includes a frame, front and rear rolling gears, a head set, a handlebar, a board, a brake and a tube. The frame includes two first, second and third crossbars for interconnecting two lateral bars. The front rolling gear is rotationally connected to the lateral bars by the head set. The handlebar is connected to the front rolling gear. The rear rolling gear is connected to the third crossbar. The board includes a hook for engagement with the first crossbar as the board is in an upper position and for engagement with the second crossbar as the board is in a lower position. The brake is connected to the board for frictional contact with the rear rolling gear. The tube includes an end pivotally connected to the lateral bars by the second crossbar and another end pivotally connected to the board.

Abstract: A skateboard includes a deck, a rear gear and a front gear. The rear gear is attached to the deck. The front gear includes a base plate, a friction-resistant plate, a hanger, a front wheel, a baring and a king pin. The base plate is attached to the deck, made of a plastic material, and formed with an inclined face. The friction-resistant plate is made of a friction-resistant metal material and located against the inclined face. The hanger includes a ring and two branches extending from the ring. The front wheel is attached to the branches. The bearing is located in the ring. The king pin is inserted in the bearing located in the ring, the friction-resistant plate and the base plate so that the axis of the king pin extends downward and toward the rear gear.

Abstract: A scooter has a folding device provided to selectively pivotally connect to a T-shaped handle bar and a platform. The folding device for scooters comprises a pair of side plates respectively secured to a lower portion of a T-shaped handle bar, a seat secured between the pair of side plates and an engaging unit mounted onto an underside of the platform. The engaging unit is selectively engaged to the seat to fix the relative connection between the handle bar and the platform.

Abstract: A stand for scooters includes a base laterally mounted to a longitudinal frame under a platform of the scooter. A supporting shaft has a first end pivotally mounted to the base and a second end selectively abutting against a support surface/ground for supporting the scooter. A spring plate has two opposite ends respectively engaged to two opposite ends of the base. The wiggle range of the supporting shaft is 180 degrees and temporarily positioned in each 90 degrees due to a restitution force and a shape of the spring plate.

Abstract: A scooter has a folding device provided to selectively pivotally connect to a T-shaped handle bar and a platform. The folding device for scooters comprises a pair of side plates respectively secured to a lower portion of a T-shaped handle bar, a seat secured between the pair of side plates and an engaging unit mounted onto an underside of the platform. The engaging unit is selectively engaged to the seat to fix the relative connection between the handle bar and the platform.

Abstract: A bicycle reflector has a case and an electric module. The case has an internal space. The electric module is mounted in the internal space and has a rolling ball switch, a light sensor, multiple light sources, a battery contact and a control board. The control board electronically connects to the rolling ball switch, the light sensor, the light sources and the battery contact. The light sources is controlled by the control board to emit light when the rolling ball switch is moved to electrically short and the light sensor detects a low brightness of environment.

Abstract: A wheel for an in-line skate has a hub and a tire. The hub has an inner segment, multiple flat spokes and an outer segment. The inner segment is annular and has a center, an external surface and an axle hole. The axle hole is formed through the center of the inner segment. The flat spokes are formed on and protrude radially from the external surface of the inner segment and each flat spoke is X-shaped and has two fins. The adjacent flat spokes may be arranged with a lateral deviation. The outer segment is connected to the flat spokes and is concentrically mounted relative to the hub. The tire is formed as a signal piece around the outer segment of the hub. Therefore, the wheel is lighter and improves shock absorption of the wheel.

Abstract: An illuminated helmet has a body, an illuminating device and a shell. The body is plastic foam and has an outer surface. The illuminating device is mounted on the outer surface of the body and has a flexible ribbon cable, multiple LEDs, a battery cartridge, and a switch. The switch is mounted on the body and is connected with the multiple LEDs and the battery cartridge by using the flexible ribbon cable. The shell is a plastic sheet and has an inner surface. The ribbon cable is flexible and thin, allowing the ribbon cable to be mounted smoothly on the outer surface of the body without breaking so the shell caps the body well and will not break.

Abstract: A bodyboard has a body and a coat assembly. The coat assembly is completely mounted around the body and has a base, an elastic coat, a zipper and a cavity. The elastic coat is mounted outside the base and has an opening. The zipper is mounted on the opening in the elastic coat. The cavity is formed between the base and the elastic coat for receiving the body. Because the coat assembly has the zipper, the coat assembly could be detached from the body and changed or cleaned easily.

Abstract: A leash mount for floating boards has a base and a cap. The base has a seat and a connecting assembly protruding from the seat. The connecting assembly is has a connecting tube and a leash tie hole. The connecting tube has at least one pair of mounting recesses. The pairs of mounting recesses are formed diametrically on the connecting tube. The cap is rotatably mounted detachably in the connecting tube and has multiple bosses. The bosses correspond to and are mounted in the mounting recesses to hold the leash mount securely. Therefore, a leash tie can be mounted on a surfboard through the leash tie hole of the leash mount easily and securely whilst being remolded quickly for cleaning or maintenance.

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 skateboard includes a light timber board connected with two hard timber boards at two ends. Two carbon fiber composite boards are adhered to two sides of the light timber board, and two timber veneers are adhered respectively onto the two carbon fiber composite boards. The application of the light timber board reduces the weight of the skateboard, and the carbon fiber composite boards enhance the structural strength and the resilience.

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 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 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 knee pad assembly includes a soft body, a top pad and a bottom pad. The body has a pair of straps each provided with a length regulator, a press extending from a connector which is slidable in the length regulator and a clamping finger integrally extending out from the press. The top pad has a first side securely connected to the soft body and a second side detachable from the soft body. The top pad has a first receiving hole to correspond to and receive therein the clamping finger of one of the two straps. The bottom pad has a first side securely connected to the soft body and a second side detachable from the soft body. The bottom pad has a second receiving hole to correspond to and receive therein the clamping finger of the other one of the two straps.

Abstract: A skate includes an outer shell, an inner boot, an instep protector and a frame assembly. The outer shell includes a lower shell and an upper shell pivotally mounted on the lower shell. The lower shell includes an outsole with a front, a rear and a bottom, a toe protector integrally formed at the front and an ankle protector integrally formed at the rear of the outsole. The inner boot having a vamp is removably mounted in the outer shell. The instep protector made of thermoplastic elastomer is mounted on the lower shell of the outer shell corresponding to the vamp of the inner boot. The frame assembly is attached to the bottom of the outsole. Consequently, the instep protector imparts flexibility to the skate and protection to the foot so that the foot will feel comfortable and have precise control during skating.

Abstract: A bodyboard has a body and a protective strip. The body has a core, an upper layer and a lower layer. The core has a top, a bottom and multiple holes defined in the top and the bottom. The upper layer is securely attached to the top of the core with glue. The lower layer is securely attached to the bottom of the core with glue. The protective strip is mounted on the edge of the body along the front and two sides of the body. The holes in the core plate enlarge the glue contact area of the core, such that the structure between the core, the upper layer and the lower layer is strengthened.