Dispensing container for viscous material

Details Dispensing container for viscous material Dispensing container for viscous material

1990-02-01

1991-10-15

Shaver, Kevin P.

Dispensing

With discharge assistant

Container with follower

222383, B67D 542, G01F 1100

Patent

active

050566903

ABSTRACT:
A dispensing container for a viscous material such as a pasty product capable of readily and smoothly carrying out the insertion of a piston into a container body while ensuring the sealing between the piston and the container body. The dispensing container includes a gap defining structure provided on an annular piston guide region defined on the inner surface of the container body so as to define at least one gap between the piston and the inner surface of the container body while ensuring the contact between the piston and the inner surface of the container body. The gap defining structure is formed so as to permit the gap to be larger in size on the insertion initiating side of the piston guide region than on the insertion terminating side of the piston guide region. For this purpose, at least one groove or roughened surface section may be provided on the piston guide region.

REFERENCES:
patent: 3291128 (1966-12-01), O'Neil
patent: 4402431 (1983-09-01), Wiegner et al.
patent: 4671432 (1987-06-01), Benecke et al.
patent: 4804115 (1989-02-01), Ball
patent: 4852772 (1989-08-01), Ennis, III

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