CAVITATION RESISTANT GEAR DRIVEN FUEL PUMP
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United States of America
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Issued Date -
Jan 23, 2020
app pub date -
Jul 17, 2018
filing date -
Jul 17, 2018
priority date (Note) -
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Abstract
A gear pump for a gas turbine engine including a first gear having a plurality of gear teeth supported for rotation on a gear shaft relative to a second gear, wherein the gear teeth are formed from a steel base material and surfaces of the gear teeth are coated with a cavitation resistant coating material, and a journal bearing for carrying a gear shaft load through a fluid film pressure between a surface of the gear shaft and a surface of the journal bearing, wherein at least a portion of the journal bearing is formed from a cavitation resistant base material.
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