A pre-visualization device (for movie, game, and other digital media creation, the pre-visualization device (10, comprising: one or more markers (13); a motion capture camera system (14); wherein the one or more marker(s) (13) is/are adapted to be physically located and moveable on a marker plane (12), wherein each marker (13) comprises means (13a) adapted to provide position data in relation to its position (P) on the plane (12), the position and possibly movement is captured using the motion capture camera system (14).

Methods and apparatus are discussed for an electric-powered personal transportation vehicle with a composite board to support a weight of a user, one or more wheels driven by one or more electric motors, where the electric motors are powered by one or more batteries. The composite board includes a heterogeneous mix of individual components making up the composite board. The composite board includes i) a spine of the composite board made of a hardwood material connected to ii) sides of the composite board made of a vibration-dampening, high-density, foam.

Methods and apparatus are discussed for an electric powered personal transportation vehicle with electric motors powered by one or more batteries. A battery pack storage enclosure i) contains a set of pocket cores. The first battery pack storage enclosure has a rigid internal structure that has a set of pocket cores that hold the battery cells in place and ii) contains a metal mid-plate that functionally transfers thermal heat rapidly through a metal mass of the metal mid-plate to smooth out spikes of local temperatures when an initial battery cell overheats and fails in order to minimize the heat from the initial battery cell failure from propagating and causing a neighboring battery cell to also fail from the heat.

The invention relates to a padel court construction for playing padel, the padel court construction comprising a padel field; at least two panels configured to at least partly enclose the padel field; and at least one strut configured to connect the at least two panels to each other. The padel court construction further comprising a ground profile configured to guide the at least two panels in relation to each other, and an adjustment element configured to displace at least one of the panels in relation to the ground profile.

The invention relates to a padel court construction for playing padel, the padel court construction comprising a padel field; at least two panels configured to at least partly enclose the padel field; and at least one strut configured to connect the at least two panels to each other. The padel court construction further comprising a ground profile configured to guide the at least two panels in relation to each other, and an adjustment element configured to displace at least one of the panels in relation to the ground profile.

A line striper having a spray control system includes a spray gun, a lever, first and second cables, a manual actuator, and an assisted control. The lever is configured to move between a spray position and an inactive position. The first cable is mechanically linked to the lever. The manual control is mechanically linked to the first cable and configured to pull the first cable rearward to move the lever into the spray position. The second cable is mechanically linked to the lever. The assisted control is configured to pull the second cable rearward to move the lever into the spray position. The lever is independently moveable relative to the first and second cables such that movement of the lever caused by the first cable does not compress the second cable and movement of the lever caused by the second cable does not compress the first cable.

A ring for a fighting sport has a circular fighting area defined by a plurality of circular fence rings that are held up by posts. Shock absorbers connect the fence rings to the posts. Position markers are provided to indicate the starting positions of the participating fighters at certain points during the bout.

A local coordinate system in which the turfed area is digitized, and a marking area is divided into elementary cells to form a matrix, and the pattern to be marked is broken down into a mosaic of pixels associated with the elementary cells of the matrix. Next, for each elementary cell of the matrix, tasks to be performed by the marking devices are determined according to a value of the pixel associated with said elementary cell, to mark the pattern to be marked on the marking area; and the movement of the vehicle over the turfed area is controlled so as to cover all of the elementary cells, and the marking devices are controlled so as to perform the tasks to be performed in each elementary cell.

Systems and devices for a team game played on an obround court includes radially symmetric barriers defining cylindrical goals having circular openings concentric with the semicircles of the obround court. An annular halt zone extends around the barriers. A free throw line extends around each halt zone. An obround judge lane extends along the perimeter of the court and is occupied by two judges or referees that monitor the game, while another judge or referee remains inside the perimeter. The court is divided by a centerline which includes a circle at the center of the court. The outer wall of the barrier includes one or more video screens. Audience members can access a computer network to display images, text or video selected by them in real-time during gameplay. The ball used for the game has a surface texture provided by a plurality of square pebbles instead of rounded pebbles.

This disclosure describes a pressure-sensitive marking tape or paint for pickleball, pickleball courts formed using the marking tape or paint, and pickleball ball inbounds or out of bounds determinations using the marking tape or paint. The marking tape or paid is configured to, when set on the playing surface of a pickleball court, generate a visually detectable temporary localized variation, in the color or the like, of the marking tape or paint at the point of contact by a pickleball ball. The temporary localized variations enable clear determination of whether the pickleball ball is inbounds or out of bounds during game play.