| 摘要 |
A dispenser (1) has a pneumatic spring (50) for its return movement and a filler body (70) for expelling dead volumes, which pneumatic spring and filler body can be constructed by means of a single component as mutually movable valve elements (23, 54) of two valves (21, 55) with different functions. An open actuation tappet (20) which surrounds an outlet channel (19) in an enclosed fashion and is contactless designed over the greatest part of its length in one piece with a pump piston (17) and a nozzle core (40) of an outlet opening (8) and is connected directly to the spring (53). As a result, a high degree of functional reliability of the dispenser (1) is obtained, accompanied by a simple design. <IMAGE> |
