Pressure balancing system for a fluid pump
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United States of America Patent
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-
Nov 9, 2021
Grant Date -
Sep 17, 2020
app pub date -
Mar 12, 2020
filing date -
Mar 14, 2019
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A pressure balancing system for a pump. In one example, the pressure balancing system has: a housing; a first rotor a first shaft, a first face surface; a second rotor, a second face surface adjacent the first face surface of the first rotor; the face of the first rotor, the face of the second rotor, and an inner surface of the housing forming at least one working fluid chamber; an annular ring fitted around a shaft, adjacent a first pressure chamber having a fluid connection through the housing; the annular ring configured to bias the first rotor toward the second rotor when fluid is supplied under pressure to the first pressure chamber; a fluid conduit is configured to convey fluid to a pressure chamber between the housing and the annular ring to bias the annular ring thus biasing the first rotor toward the second rotor.
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