Compressed air discharge device

Abstract

(57) Abstract: A compressed air discharge device (1) having an inlet (6) for entry of air into the device (1) and an outlet (8) for discharge of air from the device (1). First, second, third and fourth passages (10, 12, 14, 16) are provided for flow of air. A first valve (18) controls flow of air from the first passage (10) to the third passage (14). A second valve (20) controls passage of air from the third passage (14) to the fourth passage (16). T he first passage (10) is provided between the inlet (6) and the first valve (18). The third passage (14) is provided between the first and second valves (18, 20). The fourth passage (16) is provided between the second valve (20) and the outlet (8). A trigger (36) operates the first valve (18) to allow air to flow therethrough into the second and third passages (12, 14). The second passage (12) is arranged so that air is able to enter the second passage (12) upon the first valve (18) being opened. A chamber (60) is formed within the device (1) and the second passage (12) leads to the chamber (60). A piston (56) is movable by air entering the chamber (60). Operation of the trigger (36) opens the first valve (18) to allow air to flow therethrough from the first passage (10) into the second and third passages (12, 14). The air flows along the second passage (12) to the chamber (60) to cause the piston (56) to move which causes the second valve (20) to open and allow air to flow therethrough from the third passage (14) to the fourth passage (16) and to be discharged from the outlet (8).

Dependencies are inferred from the claim text.