An improved advertising system can include a location having a substantially large expanse of living greenery, a predetermined design for an advertisement, and a chlorophyll-based agent. The location can be observable by viewers at a predefined minimum viewing distance. The chlorophyll-based agent can be used to paint the predetermined design on the living greenery. The chlorophyll-based agent can be non-detrimental to the health of the living greenery. The predetermined design painted on the living greenery with the chlorophyll-based agent can be only viewable by viewers at the predefined minimum viewing distance. Living greenery treated with the chlorophyll-based agent can be visibly distinguishable from and shinier than neighboring untreated living greenery. When a viewer is nearer than the minimum predefined viewing distance, a difference in shine and color between the treated living greenery and the untreated living greenery can be substantially unnoticeable.

Various devices utilize rotational movement of a piece of chalk to apply a graphic to a surface. Such a device includes a chassis, a motor connected to the chassis, a solid piece of chalk supported by a mounting structure carried by the chassis, and a rotatable axle or spindle that transmits rotational movement from the motor to the solid piece of chalk via the mounting structure such that the solid piece of chalk may be sanded by a surface to render a graphic to the surface. Some such devices are vehicles. Various systems include such devices as well as remote communication devices for operational control.

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.

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.

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.

Novel and advantageous portable pitching lanes for softball are disclosed. In one embodiment, a pitching lane for softball is disclosed comprising a foundation layer, a surface layer, and a pitching rubber. The portable pitching lane is movable from place to place when not in use, but does not move when in use.

An athletic play surface having a moisture-resistant substrate layer located on top of a base surface. A woven scrim layer is positioned on top of and adhered to the substrate layer. A plurality of open cells extend through the scrim layer. An encapsulation layer is formed using a flowable curable material that is poured over the scrim layer and that hardens. The curable material passes through the open cells of the scrim layer, contacts the base surface, and then substantially fills the plurality of open cells of the scrim layer. A portion of the encapsulation layer extends beyond a top of the scrim layer to a height H. A decorative layer, such as paint and court lines, may be applied on top of the encapsulation layer.

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 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.