RECIPROCATING PNEUMATIC DRIVE Russian patent published in 1994 - IPC

FIELD: mechanical engineering. SUBSTANCE: piston in the upper dead point initiates a first pneumatic distributor by a pusher cam and thus communicates the upper cavity of a cylinder with an air manifold through holes, and the lower cavity - with the atmosphere also through holes. The return channel of the first pneumatic distributor in this position communicates with the atmosphere through an initiated second distributor. The piston moves down under the air pressure fed to the cylinder through holes. When the piston is in the lower dead point the cam initiates the second pneumatic distributor and the air from the manifold passing through the second pneumatic distributor and the holes enters the return channel of the first distributor and shuts it off. In this position the air from the manifold enters the first pneumatic distributor through the holes, flows out of the first pneumatic distributor through the hole and enters the lower cavity of the cylinder through the hole, the piston moves up. EFFECT: improved structure. 3 cl, 5 dwg