Patent ID: 7225725

Claim:
A pneumatic motor for use in a conveyor for moving objects on a conveyor plate, the motor which comprises: (a) a housing; (b) a cylinder bore having opposed ends and located in the housing and having an oil impregnated liner positioned in the cylinder bore between the ends of the cylinder bore; (c) a piston rod having opposed ends and movably mounted in the cylinder bore so that the ends of the piston rod extend out of the ends of the cylinder bore wherein the ends of the piston rod are connected to the conveyor plate; and (d) a piston having opposed ends and mounted on the piston rod in the cylinder bore spaced between the ends of the piston rod and the ends of the cylinder bore, wherein air flows into the cylinder bore adjacent one end of the piston to move the piston, the piston rod and the conveyor plate in a first direction and wherein when the piston moves a predetermined distance in the cylinder bore, air flows into the cylinder bore adjacent the other end of the piston to move the piston, piston rod and conveyor plate in a second direction opposite to the first direction.