Dispensing – With discharge assistant – Fluid pressure
Patent
1999-03-30
2000-07-25
Douglas, Steven O.
Dispensing
With discharge assistant
Fluid pressure
2224021, B65D 8300
Patent
active
060926988
ABSTRACT:
A high volume aerosol valve with an axially acting high volume valve stem having upper, intermediate and lower portions. The intermediate portion has an annular gasket sealing groove with four large rectangular orifices having side-to-side vs. top-to-bottom dimensions in a ratio of at least approximately three to one. A stem bore extends from the top of the stem upper portion down through and past the stem intermediate portion and substantially down into the stem lower portion. Narrow web members occupy said stem bore from a position substantially up into said stem upper portion extending down through said stem intermediate portion and substantially down into said stem lower portion to the bottom of the bore. Radially outer edges of the narrow web members, in the stem intermediate portion, define therebetween the four large rectangular orifices. The large rectangular orifices, lying along a circle passing through the radially outer edges of the narrow web member, occupying at least seventy, and preferably at least seventy-five, per cent of the circumference of the circle. The narrow web members in horizontal cross section preferably take up less than fifty per cent of the available cross-sectional area internal to the stem.
REFERENCES:
patent: 4165825 (1979-08-01), Hansen
patent: 4413755 (1983-11-01), Brunet
Douglas Steven O.
Precision Valve Corporation
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