Dispenser for dispensing paste compositions

Details Dispenser for dispensing paste compositions Dispenser for dispensing paste compositions

1987-11-15

1989-04-11

Huppert, Michael S.

Dispensing

With discharge assistant

Container with follower

222541, 264249, 2643289, 53489, B65D 542, B29C 6500

Patent

active

048198366

ABSTRACT:
A dispenser for dispensing paste compositions comprising a piston movable in an emptying direction within a dispenser housing, and a stopper part for closing the piston adapted to be driven in sealing manner into the piston. A stopper seat is developed in the piston and the dispenser housing is evacuatable by an air vent zone located in the region of the stopper seat, the zone being defined by slots formed between the stopper seat and the stopper part which are interrupted by radial arms of the stopper part. The arms form two separate sections which lie one behind the other in axial direction, and which are separated from each other by a free space, and at least those arms which lie on a cross-sectional plane of one section are formed as tear-off arms.

REFERENCES:
patent: 4298036 (1981-11-01), Horvath
patent: 4657161 (1987-04-01), Endo et al.
patent: 4671432 (1987-06-01), Benecke et al.
patent: 4747199 (1988-05-01), Kitchen

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