Self-closing dispenser

Details Self-closing dispenser Self-closing dispenser

1983-02-25

1985-05-28

Rolla, Joseph J.

Dispensing

Outlet element operated by pressure of contents

Spring form, resilient or compressible flow controller or...

222496, 222559, 222511, B05B 1104

Patent

active

045195307

ABSTRACT:
A self-closing dispenser device having a generally rigid valve support with a two-way passageway for dispensing in one direction and return air flow in the other direction, a diaphragm on one side of the valve support, a valve member on the other side of the valve support, porting in the diaphragm, a valve stem connected to the diaphragm member and extending through the two-way passageway, and having a valve closure surface and a dispensing opening in the valve member, normally closed by the valve closure surface and movable outwardly for ejection of material, and the valve stem and closure surface being movable inwardly away to permit re-entry of air.

REFERENCES:
patent: 4141474 (1979-02-01), Nilson
patent: 4186882 (1980-02-01), Szczepanski
patent: 4408702 (1983-10-01), Horvath

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