Grooved gear pump
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United States of America Patent
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-
Jan 15, 1985
Grant Date -
N/A
app pub date -
Aug 6, 1982
filing date -
Aug 6, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The drive and driven gears of a pump are formed with grooves extending inward from the tips of the teeth to inside the root diameter. Thus each gear is divided into a first portion which serves solely as a drive or driven gear and a second portion which serves the two functions of a conventional pump gear, mainly to perform the pumping function and part of the drive function. Fitting within the grooves of both gears is a suction shoe which also overlies the inlet duct of the pump block and the mesh points of the first portions of the gears plus about two teeth to either side of the mesh point. The shoe separates the large portion of the pump chamber from the inlet duct.
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