Methods, systems, and apparatus, including computer programs encoded on computer storage media, coordinate dynamic adjustments of a trailer based in part on a user profile associated with a user physically present at the trailer and an activity profile associated with an activity selected to be performed at the trailer. A dynamic adjustment may modify a tilt of a lower surface of the trailer. A dynamic adjustment may modify a dimension(s) of the trailer based in part on a detected object(s). Various dynamic adjustments may occur concurrently, individually and/or sequentially. The trailer may be a moveable trailer for temporary attachment with a vehicle.

The present invention forms meshes between intersections of synthetic fiber cords while the synthetic fiber cords having a form in which a plurality of synthetic fiber filaments are plied and twisted is crossed in a knotless type, wherein a diameter (d) of the synthetic fiber cord satisfies the Equation (I), a maximum distance (DI) between the intersections adjacent to each other satisfies the Equation (II), and a minimum distance (D2) between the intersections adjacent to each other satisfies the Equation (III).

Since the present invention is made lightweight with a lower areal density than a conventional protective net for sports and increases rate of hole size with a small diameter of the synthetic fiber cord constituting the protective net, the present invention improves resistance against wind during manufacture of a protective net structure, and has excellent mechanical properties and thus provides excellent resistance against impact applied when a ball flies and bumps. Consequently, the present invention minimizes damage and extends a replacement cycle.

Further, the present invention improves visibility with the high rate of hole size, and also improves stability by effectively preventing penetration of the ball between the meshes.

Further, the present invention is easily mounted in the protective net structure and provides excellent flame retardancy and weather resistance.

A mouth shield to prevent lip reading of the lips of a user may include a shield to shield the lips of the user; a pivoting fastener device to rotate the partial oval shield between a substantially horizontal position to a substantially vertical position in which the lips of the user substantially are uncovered to where the lips of the user are covered to prevent lip reading; and a clamp device to clamp the pivoting fastener device to a microphone.

An athletic training system (200) has a data recording system (202) and a data engine (204). The data recording system (202) is configured to record an athletic competition event. The event may have a first team of players competing against a second team of players. The data engine (204) is configured to receive data associated with the recorded athletic competition event. The data engine (204) processes the data and displays the data as a replay of the event in animated form.

This disclosure relates to tiltable trampoline frame support structures that include a front support member, a rear support member, two elongated link members and two elongated adjusting link members. The front support member and the rear support member are pivotally coupled to frame members and are pivotal about a horizontal axis perpendicular to the front line of the trampoline. The horizontal link members are pivotally coupled between the front support member and the rear support member. The upper ends of the adjusting link members are pivotally coupled to the upper ends of the front support member and the lower ends of the adjusting link members are movable coupled to the horizontal link members in a such way that the tilt angle of the rebounding mat shifts when the coupling place of the adjusting link members to the horizontal link member is adjusted.

A modular strength training equipment system for providing a plurality of equipment options. The system includes a plurality of base components for forming a plurality of customizable base configurations. The plurality of base components includes a plurality of posts, a plurality of stabilization legs, and a plurality of junction boxes. Each of the plurality of junction boxes include a base receiver, a vertical receiver, and one or more horizontal receivers for removably receiving and arranging the plurality of posts and the plurality of stabilizing legs into the plurality of customizable base configurations. The system further includes a plurality of function mounts that are each configured to be selectively secured to at least one of the plurality of customizable base configurations based on a desired equipment option of a user.

A track exercise device with at least first and second substantially parallel tracks, and first, second, third, and fourth movable platforms. The first and third movable platforms are movable on the first track, and the second and fourth movable platforms are movable on the second track. Transverse attachments selectively and respectively attach the first and second movable platforms together on the first and second tracks and the third and fourth movable platforms together on the first and second tracks. Longitudinal attachments selectively and respectively attach the first and third movable platforms together on the first track and the second and fourth movable platforms together on the second track. A tilting adjustment selectively provides for inclined or flat movement of the first, second, third, and fourth movable platforms.

Systems and methods for testing a surface are described. An apparatus can be configured to consistently strike a ball to maintain consistent testing conditions. One or more parameters may be determined based on a path of travel of the ball.

Systems and methods for testing a surface are described. An apparatus can be configured to consistently strike a ball to maintain consistent testing conditions. One or more parameters may be determined based on a path of travel of the ball.

An apparatus comprising a plurality of upright frames to support a batting cage net; and a track system comprising a first track and a second track, the first track to be placed parallel to the second track, the first track and the second track to guide movement of the plurality of upright frames to enable a first configuration for compacted storage and a second configuration for use of the batting cage net.