Silent gear pump or motor suppressing troubles of trapping fluid
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United States of America Patent
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Apr 17, 2018
Grant Date -
Apr 21, 2016
app pub date -
Apr 16, 2014
filing date -
Apr 17, 2013
priority date (Note) -
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Abstract
Fluid delivery devices using a pair of meshed external gears, in spite of no reciprocating component for fluid delivery enabling low rotational vibration, the high noise due to the trapping phenomenon, and the teeth bouncing contact due to undesired large backlash heretofore afforded in the gear manufacturing process, restrict the employments in the industrial field requiring quiet environment such as electric motor vehicles or room services.
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