Sprayer-dispenser pumps

Details Sprayer-dispenser pumps Sprayer-dispenser pumps

1976-07-22

1978-05-09

Knowles, Allen N.

Dispensing

Resilient wall

Supply container delivering to receiving chamber

222213, 239350, 239362, B65D 3700

Patent

active

040882489

ABSTRACT:
A two-piece flexible bulb is clamped on the open upper end of a container by a ferrule which seals against the upper section of the bulb. A dispenser head mounted on a pressure pad on the upper bulb section includes a bayonet valve stem which engages a flap-type outlet valve formed on the upper bulb section. Depressing the head sufficiently distorts the bulb which creates pressure in the chamber, and also compresses the pressure pad which permits the valve stem to open the outlet valve. Depressing the upper bulb section breaks the seal between the bulb and the ferrule, thus, allowing air into the container to replace the product which is sucked into the chamber through a flap-type check valve in the lower bulb section, after the dispenser head is released. In alternate arrangements, the flap valves are replaced by flexible valve openings which cooperate with valve stems to open the valves when the bulbs are distorted by depressing the dispenser heads.

REFERENCES:
patent: 2543850 (1951-03-01), Henricson
patent: 2662669 (1953-12-01), Schmidt
patent: 2671578 (1954-03-01), McBean
patent: 2772817 (1956-12-01), Jauch
patent: 2804240 (1957-08-01), Anderson
patent: 2884164 (1959-04-01), Kleid
patent: 2942762 (1960-06-01), Fahr
patent: 3160329 (1964-12-01), Radie et al.
patent: 3220611 (1965-11-01), Zander et al.
patent: 3282474 (1966-11-01), Gorman

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