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Patent Searching and Data


Title:
METERING PUMPS FOR AN AEROSOLIZER
Document Type and Number:
WIPO Patent Application WO2002074443
Kind Code:
A3
Abstract:
An apparatus to make a certain volume of liquid available for atomization comprises a container (502) adapted to hold a liquid, and a piston pump (504). The piston pump (504) comprises a piston member (506) and a valve body (510), with the piston member (506) being slidable within the valve body (510). Further, the valve body (510) functions with the piston member (506) to define a metering chamber (523). In this way, the metering chamber (523) is adapted to be filled with liquid from the container (502) when the piston member (506) is moved to a filling position, and the piston pump (504) is adapted to dispense a known volume of the liquid from the metering chamber (523) when the piston member (506) is moved to a dispensing position.

Inventors:
NARAYAN SHARAD
IVRI YEHUDA
WU CHENG H
CATER MIRO S
Application Number:
PCT/US2002/008378
Publication Date:
April 10, 2003
Filing Date:
March 19, 2002
Export Citation:
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Assignee:
AEROGEN INC (US)
International Classes:
A61M5/30; A61M15/00; B05B11/00; B05B12/08; B05B17/00; B05B17/06; B41J2/025; C25D1/08; A61M16/00; (IPC1-7): A61M11/00; B05B17/06
Foreign References:
US4819834A1989-04-11
US5435282A1995-07-25
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