Dosage pump
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 30, 1980
Grant Date -
N/A
app pub date -
Mar 23, 1979
filing date -
Mar 28, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A manually operatable dosage pump comprising a cylinder, a piston movable therein between two end positions, and inlet and outlet passages communicating with the cylinder space and each containing a one-way valve or check valve. The piston is adapted to interrupt communication between said inlet and outlet passages in at least one of the end positions of the piston. Thus, a valve member mounted on the piston may cooperate with valve seats formed in a valve chamber axially aligned with the cylinder space.
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Family
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Cited Art Landscape
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