Dispensing cartridge with storage cylinder and feeding piston

Details Dispensing cartridge with storage cylinder and feeding piston Dispensing cartridge with storage cylinder and feeding piston

1993-07-20

1995-03-28

Kashnikow, Andres

Dispensing

With discharge assistant

Insertable cartridge or removable container

222386, B65D 8300

Patent

active

054009260

ABSTRACT:
A dispensing cartridge comprising a storage cylinder and a feeding piston. A sealing ring is inserted in the wall of the piston at a distance from the end of the feeding piston facing the cartridge contents. The end is additionally provided with a sealing lip and a V-shaped, circular groove disposed between the sealing lip and the piston wall. The bottom surface of the feeding piston facing the cartridge contents is provided with radially extending venting grooves which communicate with a venting bore, while the other ends of the venting grooves communicate with the V-shaped circular groove of the sealing lip. With the feeding piston sealed in this matter, outflow of the contents is effectively prevented even if aggressive substances, substances having a low viscosity, or substances having extremely high flow properties are contained. Moreover, the ability to store such substances is strongly increased.

REFERENCES:
patent: 3066836 (1962-12-01), Trumbull
patent: 3217936 (1965-11-01), Abplanalp
patent: 4645098 (1987-02-01), Hoffmann
patent: 4792065 (1988-12-01), Soehnlein et al.
patent: 4819836 (1989-04-01), Meckenstock
patent: 4834268 (1989-05-01), Keller
patent: 4854485 (1989-08-01), Collins
patent: 4951848 (1990-08-01), Keller
patent: 5022563 (1991-06-01), Marchitto et al.
patent: 5042695 (1991-08-01), Battegazzore
patent: 5165572 (1992-11-01), Bath
patent: 5178305 (1993-01-01), Keller

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