Liquid-controlling nozzle geometry for dispensers of liquids

Details Liquid-controlling nozzle geometry for dispensers of liquids Liquid-controlling nozzle geometry for dispensers of liquids

1989-02-14

1990-11-20

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

7386401, 73864, 422 99, 222420, B05B 1100

Patent

active

049717634

ABSTRACT:
Dispensing nozzles suffer from the problem of perfusion and can be relatively inaccurate in the amount of fluid dispensed each time. Described herein is a dispensing device which is provided with an improved nozzle construction. An exterior surface, having an aperture through which fluid is dispensed, has a second surface positioned adjacent to it. Further surfaces are arranged further up the nozzle. The arrangement of the surfaces is such that self-wiping of the device is maximized (if the device is also used for aspiration wherein the device is withdrawn from a supply of the liquid) and that perfusion is minimized during dispensing of the fluid contained therein. This is achieved by having the second surface angled to the first surface, defining an angle .alpha., relative to the first surface.

REFERENCES:
patent: 3449081 (1969-06-01), Hughes
patent: 4347875 (1982-09-01), Columbus

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