Abstract: A multi-dimensional theatre based on a mechanical arm type roller coaster comprises a track, a track traffic control system, static scenes and dynamic scenes arranged based on a travelling path of the track and various special effect devices coordinated with a plot, and a plurality of mechanical arm type riding devices travelling on the track. The top of both wings of the track is combined with a wheel train of the riding devices, wherein the travel of the riding devices is controlled by the track traffic control system. Multiple groups of friction wheels driven by respective electric motors are mounted in parallel on the main body of the track. The electric motors are fixedly mounted within the main body via multiple groups of corresponding adjustable brackets. The riding devices comprises a roller coaster chassis and a mechanical arm, wherein a seat is mounted at an end of the arm.

Abstract: Disclosed is an entertainment-oriented multi-mode experience system featuring a closed rail and a riding vehicle traveling along the closed rail. A screen rail is provided at the side of the closed rail. A screen synchronous moving mechanism corresponding to the riding vehicle and capable of traveling is provided on the screen rail. The screen synchronous moving mechanism includes a rotary support device and a traveling device. A screen is installed on the top of the rotary support device and is capable of performing a 180° pitching motion via a pitch axis, and the rotary support device is installed on the traveling device and is capable of performing a 360° rotation in a horizontal plane. The traveling device can travel along with the riding vehicle synchronously on the screen rail.

Abstract: Apparatus and methods for attachment of a fire protection sprinkler fitting to the wall-ceiling junction of existing buildings. In a J-fitting assembly of a sprinkler system is coupled to a water supply and has an exposed sprinkler head connected to it, the attachment apparatus includes a guide channel coupled to the J-fitting to facilitate fastening the fitting to the internal structure of the wall.

Abstract: A nondestructive retrofit fire sprinkler protection system including a sprinkler fitting with a unique shape that inserts behind a wall surface and that securely connects a sprinkler head emerging from a wall location to preferably concealed sprinkler piping located in a room at a point where the ceiling surface meets a wall surfaces. In addition, a room coupler fitting is adapted to be inserted between wall structures to connect sprinkler piping in adjacent rooms.