BEARING STRUCTURE FOR GEAR IN EXTERNAL GEAR PUMP
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United States of America Patent
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Issued Date -
Jun 15, 2023
app pub date -
Feb 6, 2023
filing date -
Dec 21, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
A gear bearing structure for an external gear pump includes a driving gear and the driven gear accommodated rotatably in a pump body of the external gear pump, an inlet chamber formed on one side of a mesh portion of the driving gear and the driven gear, an outlet chamber formed on the other side of the mesh portion, a hollow cylindrical bushing for holding a rotational shaft of the driving gear or the driven gear with a lubricating liquid film formed between itself and the rotational shaft, and a ring plate spring disposed between the pump body and the bushing to urge the bushing so as to slidably contact with a side face of the one of the driving gear and the driven gear.
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