Self-driven pump device
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United States of America Patent
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-
Aug 4, 1992
Grant Date -
N/A
app pub date -
Oct 31, 1989
filing date -
Oct 31, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for delivering fluid with a relatively constant, controlled rate of flow comprises a vacuum power means, a fluid storage means in axial alignment with the vacuum power means and a plunger means carried by the vacuum power means and in axial communication with the fluid storage means. The plunger means is driven by a vacuum which collapses under atmospheric pressure, and as it is driven it effects delivery of the fluid from the fluid storage means.
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