A precision real-time laser measurement and marking apparatus is provided. the disclosure also relates to the multiple components of the precision real-time laser measurement and marking apparatus in accordance with an embodiment of the present disclosure. The multiple components of precision real-time laser measurement and marking apparatus are as follows: the main housing; the foam spray can; the universal clip; and the fully assembled precision real-time laser measurement and marking apparatus. A method of using a precision real-time laser measurement and marking apparatus is provided. The method comprising pressing a distance measurement button while aiming an apparatus at a target; displaying an exact distance measurement on a LED screen wherein the exact distance measurement is the distance between the target and the apparatus; determining the exact distance measurement matches a desired distance; and marking a distance boundary using a spray nozzle of the apparatus.

A method of mounting at least one spray gun assembly onto an arm of a line striper includes installing a first clamp onto the arm with the first clamp being connected to a first spray gun assembly and the first clamp having an opening. The first clamp is installed onto the arm by placing the arm within the opening of the first clamp without sliding the first clamp onto an end of the arm. The method also includes securing the arm of the line striper within the opening of the first clamp.

A play device for a rebound sport with a play area is provided, on which a ball can be played by a player to rebound from an impact position in accordance with a predetermined set of rules of the rebound sport, which includes a sensor system configured to detect two-dimensional first coordinates of the impact position and to transfer the two-dimensional first coordinates to a computing unit configured to determine two-dimensional second coordinates, a size and/or a shape of a target field depending on the first coordinates in accordance with a predetermined specification and to control a projector to project the target field to be optically perceptible by the player on a projection area, wherein the ball can be played by the player on the target field to rebound from the target field in accordance with the set of rules of the rebound sport.

A line marking device (1) comprising a cart (2) with at least one steerable wheel (3) and at least two moving elements (4, 5). The steerable wheel (3) is rotatable around its axle (13) and pivotable such that the cart (2) is steered in a desired direction. The line marking device (1) comprises a GNSS receiver (7) or a robotic total station mounted on the cart (2). The line marking device (1) also comprises at least one spray nozzle (8), for marking a line, which is mounted on the cart and directed towards the ground below the line marking device (1). The device (1) comprises an interface mounted on the cart for a comparator to compare a detected location by the GNSS receiver (7) to a predetermined pattern. The cart (2) may comprise a motor (14) which is adapted to pivot the steerable wheel (3) towards an intended movement.

A display device for displaying a marking in the form of a distance to be kept between game equipment, in particular a football, and a participant on a playing field of a sports facility, includes a display device for projecting light beams representing the marking onto the playing field. The projected light beams display the distance to be kept, and can be projected at least in sections in the shape of a circle, for example at a distance of 9.15 m, around the game equipment on the playing field. The display device is jointly movable with a transport device that is movable above the sports facility.

A sports field marking assembly and method of marking creates a boundary reference point and field lines on a field or for coaching. The assembly provides a marker anchoring device that is loaded with field markers. The marker anchoring device comprises a translatable handle coupled to a spring-loaded piston that discharge the field markers into the surface of the sports field. Bristles couple to a rear end of the marker body for visibility above the surface of the field. A tape canister couples to the marker anchoring device to dispense a measuring tape. The measuring tape couples to the field markers, serving to delineate the boundaries and lines on the field. Multiple aligners anchor into the sports field to retain the measuring tape in the formed patterns. The aligners have collapsible and moveable guide posts that can be selectively raised to guide the measuring tape though the chosen guide posts.

A line stripe includes a frame, a mounting arm extending from the frame, a G-shaped clamp, a vertical bar, an extension bar, and a spray gun. The G-shaped clamp has an opening through which the mounting arm is able to extend and a fastener configured to secure the mounting arm within the opening. The opening allows the first clamp to be mounted and then secured on the mounting arm without relative sliding between the first clamp and the mounting arm. The vertical bar is attached to and extends from the clamp. The extension bar is attached to and extends from the vertical bar, and the spray gun is attachable to the extension bar. The clamp is configured to be installable upon and removable from the mounting bar without having to remove similar G-shaped clamps from the mounting bar.

A line striping system comprises a chassis, wheels, a spray system, a propulsion system and a steering system. The wheels are mounted under the chassis. The spray system is mounted on the chassis. The propulsion system is mounted on the chassis to drive a wheel. The steering system is coupled to the chassis. The steering system comprises a handlebar rotatatable to steer a wheel, and a speed bar pivotable to control the propulsion system.

A backpack is disclosed for a personal transport vehicle including, in some embodiments, a back piece including a molded front panel, a securing device, a padded back panel, and a shoulder strap system. The molded front panel includes at least two ridges configured for placement of at least a portion of a body of the personal transport vehicle between the ridges. The securing device, which is attached to a first ridge of the ridges, is configured to cross over the molded front panel to a second ridge of the ridges to secure the body of the personal transport vehicle between the ridges when present. The padded back panel is configured to rest against a backpack wearer's back. The shoulder strap system includes a pair of shoulder straps extending from a top portion of the back piece, across the back panel, and to a medial portion of the back panel.

Provided is a method for marking a ground surface according to a predefined marking pattern using a system including a robot unit and a local base station including acts of providing two flag points, receiving global positioning data of the robot unit using a robot GNSS receiver, receiving global positioning data of the local base station using a base GNSS receiver, and establishing a local base station position using the received global positioning data of the local base station. A method wherein the predefined marking pattern is arranged relative to said two flag point positions and wherein the local base station position is a system reference point of the system. The disclosed relates furthermore to a system for marking a ground surface according to a predefined marking pattern and the use thereof or parts thereof.