DISPOSABLE DISPENSER FOR POWDER

摘要

A disposable dispenser for powders comprising in a housing (14; 31) a member (1; 33) having a central passage (2; 32) communicating at its one end with a chamber (34) in which the air may be pressurized by pressing a bellows (4) or a plunger (37), and at its other end with a penetrator (26; 47) for penetrating a membrane (13) closing one end of a tubular powder magazine (11; 36) sealingly held in a socket (10; 35) surrounding the penetrator (26; 47). The other end of the magazine (11; 36) is closed by a similar membrane and is located in proximity of an inlet end of a dispensing pipe (22; 45). When the pressurizing means i.e the bellows (4) or the plunger (37) is pressed it is maintained in its compressed condition keeping the air in the chamber and the passage underpressure. By removing a cap (27; 44) covering the outlet end of the dispensing pipe (22; 45) a button (20; 42) is set free to be moved to bring the inlet end of the dispensing pipe (22; 45) and the penetrator (26; 47) towards each other to cut the membranes (13) at both ends of the magazine to relieve the pressure in the chamber (34) and the passage (2; 32) through the bore (12) of the magazine and the dispensing pipe (22; 45) and thereby dispense the powder stored in the magazine.