Manual/pneumatic oil-pumping device
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United States of America Patent
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-
May 6, 2003
Grant Date -
Feb 20, 2003
app pub date -
Aug 17, 2001
filing date -
Aug 17, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A manual/pneumatic oil pumping device including a housing having an upper cover equipped with a manual mechanism and a pneumatic air sucking mechanism. A closing means is disposed in the upper cover corresponding to the pneumatic air sucking mechanism. When the closing means is in an opened state, the oil reserving space communicates with the pneumatic air sucking mechanism so that the pneumatic air sucking mechanism can suck out the air in the oil reserving space and thus pump the oil. When the closing means is in a closed state, the oil reserving space does not communicate with the pneumatic air sucking mechanism and a user can manually pump the oil.
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