Dispensing – With cleaning means
Patent
1990-05-22
1992-03-31
Huppert, Michael S.
Dispensing
With cleaning means
222207, 222321, 239113, 239333, 2394285, B67D 500
Patent
active
051000296
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: 3904124 (1975-09-01), Garon 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
Huppert Michael S.
Pomrening Anthoula
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