Dispenser with reciprocating action

摘要

A manual, electric, air-operated, or oil operated dispenser with reciprocating action comprises a reservoir with a mouth in which tubular body is fitted. An internal duct formed in the tubular body opens outside a covering element disposed adjacent the mouth of the reservoir. A piston mounted for sliding in a leaktight manner inside the reservoir is advanced for forward travel of a predetermined maximum extent so that the product contained in the reservoir is dispensed to the exterior through the duct formed in the tubular body. During the return travel of the actuator means towards the starting position, the piston remains stationary in the position reached at the end of the forward travel.