Disposable pump for dispensing small metered amounts of liquid from a container and a control unit for operating said pump
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United States of America Patent
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Dec 21, 1982
Grant Date -
N/A
app pub date -
Feb 24, 1981
filing date -
Feb 24, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A disposable pump of plastics material for dispensing small metered amounts of liquid from a single opening container to which it has been attached and which can be closed thereby, comprises a one piece housing and a cylindrical piston; the housing has gas inlet means for allowing gas to enter the container if any subatmospheric pressure should occur therein. A control unit for operating this pump comprises a programme for imparting a certain succession of rotative and sliding movements to the piston of said pump.
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