A wheeled system for engagement with a surfboard is provided. Wheeled trucks are configured for removable engagement with a lower surface of a surfboard using mounting plates or recessed connections. The removable engagement of the trucks allow a rider to ride on support surfaces such as the sidewalk, and to remove the trucks to employ the surfboard in the water. The removable trucks may be retrofitted to existing surfboards with an elastic or mechanical engagement, or may be provided in combination with a surfboard.

A wearable article such as an article of athletic gear (e.g., a skate, an article of protective athletic equipment such as a helmet, etc.) wearable by a user and comprising an expandable user-engaging structure that is configured to be expanded (e.g., by heat or another stimulus) after manufacturing of the wearable article to conform it to the user or otherwise improve a fit of the wearable article on the user.

A riser for a skateboard with an integrated Bluetooth transceiver, the riser attaching between the deck and truck of the skateboard. Wireless transfer of information from device to device, such as between a mobile phone and the riser, is enabled. The output signal from the transceiver is coupled to a digital audio amplifier for providing an audio signal to persons within the listening area of the riser.

A boot for a roller skate system has a three-point fastening system for fastening the boot to a rail. The three-point fastening system includes three fastening devices, wherein the first fastening device is arranged in a central position in the heel region of the boot, the second fastening device is arranged on an outer side in the ball region of the boot, and the third fastening device is arranged on an inner side in the ball region of the boot. The rail that can be mounted on the boot is also described.

A skateboard deck includes: a body with a top surface and a lateral centerline, the body including a nose portion with a nose apex and a tail portion with a tail apex, wherein the nose apex and the tail apex are above the top surface of the body; wherein the total length of the body spans from a forwardmost surface of the body located along the nose portion to a rearmost surface of the body located along the tail portion, further wherein the nose apex is located between the length defined by the forwardmost surface of the body and the lateral centerline and the tail apex is located between the length defined by the rearmost surface of the body and the lateral centerline.

A four-wheel sensor controlled vehicle having a base and a control box installed with a battery and a control panel; two driving wheels are installed at the bottom surface of the base close to the front edge of the base, and two universal wheels are installed at the bottom surface of the base close to the rear edge of the base. The driving wheel has a hub assembled with a hub motor assembly of a motor. The base is installed with four weighing sensors at four corners, the first weighing sensor and the third weighing sensor respectively correspond to the fore sole and rear sole of the left foot, the second weighing sensor and the fourth weighing sensor respectively correspond to the fore sole and the rear sole of the right foot. The control panel is connected with the motor and the weighing sensors.

A sports board comprises, at a minimum, a top layer, a bottom layer, and a core in between them. A structural element with puzzle piece shape fits into a correspondingly shaped seat formed by the core, in between the top and bottom layers. The shape of the structural element prevents the structural element from being dislodged by shock forces frequently associated with use of the board. Machined or molded features are provided that penetrate or partially penetrate the structural element. These features, which are filled or included with resin, adhesive or another chemical bonding agent, resist horizontal shearing between the structural element, the core, and the top and bottom layers. A leading portion of the structural element protrudes out from in between the top and bottom layers, forming a bumper that acts as the first point of contact between the board and the ground or an obstacle.

A roller apparatus (102) is provided including roller means (104), drive means (110) for driving rotation of the roller means in use, and an electrical power source for providing electrical power to the drive means in use. The electrical power source is provided by one or more batteries (112) located internally of the roller means.

This invention relates to an improved wheel arrangement of an inline skate for improving turning capability. In this wheel arrangement, the front wheel and rear wheel and any middle wheels are disposed along a straight line that makes an acute angle with the rolling direction and with the wheels being arranged such that they are part of a substantially inverted V-shape seen in front or rear plan view. Subject of the invention are a frame, a wheel assembly, combinations of left and right frames and wheel assemblies, inline skates, a method for retrofitting a prior art frame and a replacement mount for use in such a method.

A trick scooter comprising a base plate, a support member, comprising a first end and a second end, a handle, comprising a first end and a second end, wherein the handle is attached to the second end of the support member. Furthermore, the base plate is manufactured of elastic and flexible material. Such a trick scooter is advantageous as it is lightweight, easy and safe to handle and does not damage the surroundings or cause injury to people nearby.