Invertible pump sprayer having spiral vent path

Details Invertible pump sprayer having spiral vent path Invertible pump sprayer having spiral vent path

1993-10-13

1994-10-11

Kashnikow, Andres

Dispensing

With discharge assistant

With movable nozzle interconnected therewith

22240219, 222375, B67D 542

Patent

active

053539699

ABSTRACT:
A liquid dispensing pump capable of inverted spray has a container vent including a spiral vent groove of a length restricting the free flow of liquid therethrough to avoid leakage, and being sized so that while dispensing in the inverted position the rate of liquid discharge from the container is greater than the flow of air through the vent groove which thereby creates a vacuum in the container and effects a suck-back of air through the vent into the container for venting.

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patent: 4435135 (1984-03-01), Knickerbocker
patent: 4694976 (1987-09-01), Schuetz
patent: 4775079 (1988-10-01), Grothoff
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patent: 4938392 (1990-07-01), Su
patent: 4986453 (1991-01-01), Lina
patent: 4991746 (1991-02-01), Schultz
patent: 5092495 (1992-03-01), Andre
patent: 5222636 (1993-06-01), Meuresch

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