Gear pump or motor with communication paths to suction and discharge in closed space between the drive and driven gears
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United States of America Patent
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Jul 23, 2024
Grant Date -
Feb 2, 2023
app pub date -
Jan 30, 2020
filing date -
Jan 30, 2020
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A gear pump or a gear motor in which a tooth groove is easily filled with a liquid. A gear pump includes a casing, a gear storage chamber, a suction passage, a discharge passage, a gear that is housed in the gear storage chamber and including a drive gear and a driven gear that rotate while meshing with each other, and a suction-side communication path that connects a first space and a tooth groove of the gear, the first space being a closed space formed by the drive gear and the driven gear meshing with each other, the tooth groove being opened to the suction passage.
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