Pumps – Expansible chamber type – Distributor formed from integral portion of flexible wall...
Patent
1994-04-11
1995-08-15
Gluck, Richard E.
Pumps
Expansible chamber type
Distributor formed from integral portion of flexible wall...
F04B 4302
Patent
active
054413923
ABSTRACT:
An apparatus for delivering measured liquid volumes comprising a dosing piston pump having an outlet for the measured liquid volumes, and a liquid accumulating device including an accumulator chamber having an inlet for liquid to be dispensed. The accumulator chamber communicates with the pump chamber of the dosing piston pump through a transfer passage having a valve for controlling the transfer of liquid from the accumulator chamber to the pump chamber. The accumulator chamber is expandable to accommodate constantly inflowing liquid through the inlet when the transfer passage is blocked and is contractible as a result of the displacement of a movable wall member so as when the transfer passage is open to transfer accumulated liquid to the dosing piston pump while inflowing liquid flows direct to the dosing piston pump.
REFERENCES:
patent: 4015914 (1977-04-01), Kushner et al.
patent: 4236880 (1980-12-01), Archibald
patent: 4303376 (1981-12-01), Siekmann
patent: 4657490 (1987-04-01), Abbott
patent: 4840542 (1989-06-01), Abbott
patent: 4850817 (1989-07-01), Nason et al.
Gluck Richard E.
Humanteknik AB
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