Applicator

Details Applicator Applicator

2005-01-04

2005-01-04

Huson, Gregory L. (Department: 3751)

Coating implements with material supply

Material flows through porous tool

With flow-regulator

C401S214000, C401S141000

Reexamination Certificate

active

06837640

ABSTRACT:
An applicator comprising:a reservoir for holding therein an application liquid;a valve assembly disposed in a distal region of the reservoir;a tip disposed in front of the valve assembly;the valve assembly comprising:a valve chamber having a forward opening;a valve body held in the chamber and movable fore and aft; anda biasing member for urging the valve body to be pressed against a circular rim around the opening so as to close it,the valve body having a distal portion in contact with a rear end of the tip,wherein the application liquid stored in the reservoir has a viscosity of 100 mPa·s or less, and the applicator further comprises a follower disposed in the reservoir and in rear of a column of the liquid so as to control flow rate of the liquid flowing out through the opening of the valve chamber, with the follower serving also as a back-flow inhibitor for the application liquid, and wherein a viscous material forming the follower shows the value of at highest ‘2’ as the ratio of viscosity at 5° C. to viscosity at 35° C.

REFERENCES:
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patent: 5871296 (1999-02-01), Furukawa et al.
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patent: 5967688 (1999-10-01), Hu
patent: 626 276 (1994-11-01), None

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