Liquid dispenser plunger

Details Liquid dispenser plunger Liquid dispenser plunger

1993-01-21

1994-11-01

Kashnikow, Andres

Dispensing

With discharge assistant

Container with follower

222326, B67D 542

Patent

active

053601467

ABSTRACT:
A liquid dispenser for a viscous liquid includes a hollow cylinder and a plunger axially slidably accommodated within the cylinder. The plunger has a tapered front section with an outer diameter at its rear end which is slightly smaller than the cylinder inner diameter, a drum-like intermediate section with a reduced outer diameter, and a cylindrical rear section with a maximum outer diameter which is slightly greater than the cylinder inner diameter, wherein these sections are axially aligned with, and connected to each other. The rear section has a plurality of resiliently deformable flap regions defined by, and between a plurality of axial slits in its outer surface.

REFERENCES:
patent: 2661126 (1953-12-01), Spencer
patent: 3870200 (1975-03-01), Spatz
patent: 4247023 (1981-01-01), Shew
patent: 4671432 (1987-06-01), Benecke et al.
patent: 4792065 (1988-12-01), Soehnlein et al.
patent: 4840293 (1989-06-01), Segatz
patent: 4854485 (1989-08-01), Collins
patent: 4913323 (1990-04-01), Scheindel
patent: 4966468 (1990-10-01), Bruning
patent: 5042696 (1991-08-01), Williams
patent: 5111973 (1992-05-01), Mueller
patent: 5127556 (1992-07-01), Sporri

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