Patent ID: 7726522

Claim:
Dispenser for media having a pump provided with an inside pump casing on which is displaceably guided coaxially to a pump longitudinal axis in a limited manner at least one hollow profile-shaped functional section to provide the pumping process, the displaceability of the functional section in at least one direction being limited by mutually corresponding locking profilings which are associated with the pump casing and the functional section, respectively, wherein at least the locking profiling of the functional section is provided with detents which are circumferentially mutually spaced from one another by recesses serving as free cuts, said detents bringing about a radial, elastic resilience, a securing section radially facing the locking profiling associated with the pump casing is associated with the locking profiling of the functional section and said securing section is entrained with the functional section so that during operation of the pump the functional section and the securing section are interconnected and are guided jointly on the inside pump casing along the pump longitudinal axis and said securing section engages in a radially supporting manner on the locking profiling of the functional section, the securing section and the functional section being configured relative to each other such that the functional section and the pump casing can be assembled by deflecting the detents only before the functional section and the securing section are interconnected, and the functional section and the pump casing cannot be disassembled once the functional section and the securing section are interconnected as the securing section is disposed to prevent deflection of the detents.