| 摘要 |
A device for feeding out viscous substances from tubes and other containers comprises an elastically deformable arched dome 118, which is produced in one piece with two tongues 119,120 which serve as non-return valves. The dome/tongues unit is accommodated in a housing 101 and the tongues 119,120 bear with pre-tension against wall sections of this housing which surround an inlet opening 106 and an outlet opening 110 respectively. The tongues are expediently connected to that part of the dome 118 which is deformed when pressed in, thereby increasing their pre-tensioning in the feed-out operation. <IMAGE> |
