Twist lock valve for fluid dispensing cartridges

Details Twist lock valve for fluid dispensing cartridges Twist lock valve for fluid dispensing cartridges

2005-07-05

2005-07-05

Mar, Michael (Department: 3754)

Dispensing

With lock or fastening seal

Inhibiting actuation of discharge assistant

C347S086000

Reexamination Certificate

active

06913168

ABSTRACT:
A pressure-activated flexible valve for use with a container for dispensing fluid material such as ink. The valve has a single sealing surface and comprises a base portion having a valve seat and a cap having an annular rim that seats against the valve seat when the valve is closed. The cap has an annular flexible portion that changes shape in response to pressure from the container material, thereby opening and closing the valve. The valve may be locked closed, and the space between the valve rim and valve seat can be adjusted to accommodate a variety of fluids, including inks having different viscosities.

REFERENCES:
patent: 5027986 (1991-07-01), Heinzel et al.
patent: 5851079 (1998-12-01), Horstman et al.
patent: 6192797 (2001-02-01), Rea et al.
patent: 6309059 (2001-10-01), Ritter
patent: 6419351 (2002-07-01), Lawson et al.
patent: 6547108 (2003-04-01), Johanson

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