Leak-proof sprayer

Details Leak-proof sprayer Leak-proof sprayer

1979-06-11

1981-02-10

Rolla, Joseph J.

Dispensing

With discharge assistant

With material supply container and discharge assistant with...

222321, 222381, 222494, 137510, 239452, 23953313, F05B 1100

Patent

active

042496810

ABSTRACT:
A manually operated sprayer for dispensing liquids from a container includes an improved, self-sealing outlet check valve having a resilient diaphragm convexed toward and in seating engagement with the dispensing orifice. The diaphragm is designed to flex out of engagement with the dispensing orifice when the pressure of the liquid in the pump chamber exceeds the engaging force of the diaphragm, thereby permitting the liquid in the pump chamber to flow out of the dispensing orifice in an atomized form.

REFERENCES:
patent: 1588919 (1926-06-01), Telfer
patent: 2270794 (1942-01-01), Feldmar
patent: 3545682 (1970-12-01), Beard
patent: 4057176 (1977-11-01), Horvath
patent: 4161288 (1979-07-01), McKinney

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