Dispensing – With discharge assistant – With movable nozzle interconnected therewith
Patent
1985-02-19
1986-08-26
Croyle, Carlton R.
Dispensing
With discharge assistant
With movable nozzle interconnected therewith
222383, 417511, B65D 8854, B67D 540, F04B 704
Patent
active
046077650
ABSTRACT:
A manually operated pump for the delivery under pressure in micronized form of liquid and/or thick substances or materials stored in a container on which the pump is mounted. The pump comprises a main hollow body, a movable hollow stem supporting a micronizing cap and extending into a pressure chamber defined by the hollow body, a spring urging the stem away from said chamber against a retaining element integral with the hollow body, a one-way valve sealingly bearing on a seat on the lower end of the chamber, an annular seal movable along the stem between two positions in which it clears and respectively it closes a channel in the stem opening into the axial cavity of the same stem, said seal sealingly engaging the inner surface of the hollow body and the outer surface of the stem. The pump is characterized in that the stem is provided with an annular collar positioned above the mentioned channel and which is defined by at least one frusto-conic surface and in that said seal has an elastic upper lip which is slidable upon said frusto-conic surface to urge the seal to close said channel.
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Croyle Carlton R.
Olds Theodore
S.A.R. S.p.A.
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