Self-purging actuator

Details Self-purging actuator Self-purging actuator

1992-01-16

1993-11-30

Kashnikow, Andres

Dispensing

Resilient wall

Supply container delivering to receiving chamber

222190, 222321, 239333, B67D 500

Patent

active

052657710

ABSTRACT:
An actuator for a dispensing pump is disclosed that pressurizes air and releases the air into an internal fluid passage to mix with, and aerate, fluid dispensed from the dispensing pump and expels residual fluid. The actuator has a body portion, an actuating portion biased away from the body portion, and an air chamber formed between the two portions. Force applied to the actuating portion is transmitted to, and serves to operate, the dispensing pump and compresses the actuating portion toward the body portion, pressurizing the air in the air chamber. The pressurized air is selectively released into the fluid passage. Disclosed embodiments employ a dome-shaped resilient membrane and a piston as the actuating portion.

REFERENCES:
patent: 3226035 (1965-12-01), Boris
patent: 3343797 (1967-09-01), Bach
patent: 3369757 (1968-02-01), Boris
patent: 3709437 (1973-01-01), Wright
patent: 3904124 (1975-09-01), Caron et al.
patent: 4057176 (1977-11-01), Horvath
patent: 4214677 (1980-07-01), Bauer et al.
patent: 4230242 (1980-10-01), Meshberg
patent: 4880161 (1989-11-01), Wright
patent: 5064103 (1991-11-01), Bennett

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