Abstract: A non-lethal, air-gun training weapon that is used to realistically simulate the behavior of a live firearm. The non-lethal, air-gun training weapon provides an air-gun to simulate the weight and feel of a live firearm. A magazine that attaches to the air-gun houses a gas container, which feeds compressed gas into the air-gun. The release of compressed gas actuates a laser assembly and a bolt both housed within the air-gun. The laser assembly allows users to track dry-fired shots, while movement of the bolt simulates the recoil of a live firearm. An electromechanical system housed within the magazine features a transceiver that is capable of wirelessly transmitting and receiving information from an external computer system. The electromechanical assembly also includes a jamming mechanism that can be activated by a controller board in order to simulate an empty clip or jammed weapon. The jamming mechanism can be manually or remotely reset.

Abstract: A screeding machine has mounted thereon, in order from front to rear, a paving material agitating means for dispersing and expelling trapped air, a screeding roller, and first and second drive rollers. For a fine finish, a finishing roller extends from the rear of the machine.

Abstract: A screeding machine has mounted thereon, in a trailing position, a finishing roller 51 which is driven at a rotational speed sufficient to impart a polish or patina to the surface of the paving material.

Abstract: A screeding machine has hydraulic cylinders for independently raising and lowering the opposite ends of a drive roller to effect steering actions.