| 摘要 |
Dispensers for pasty compositions having a housing (1) with a piston (2) which is displaceable only in the emptying direction and an actuating handle (H) which is developed on a head piece (5) which can be pressed bellows-like in the direction towards the piston (2) and has a dispenser outlet opening (Ö) from which there extends, directed inwards, a tube (7) whose inner mouth-end (7'') dips freely into the pasty composition in every position of the bellows (B). A structural shape which is simple to manufacture and nevertheless dependable in operation, comprises a flap valve (9) with passage opening lying in the direction of the tube (7) (arrow z), below the inner mouth-end (7'') of the tube (7), in the cover (8) of the housing (1) from which a mounting collar (6) for the bellows (B) extends.
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