Patent ID: 9488174
Filing Date: 2016-11-08
CPC Classification: F04C

Claim Text:
1. A gear pump comprising: a driven gear; a gear shaft passing through the driven gear; a stationary journal bearing configured to support the gear shaft during rotation thereof, the gear shaft supported on a fluid film formed during rotation of the gear shaft, between a surface of the stationary journal bearing and a surface of the gear shaft; a hybrid pad recess on the surface of the stationary journal bearing with a minimum leading edge angular location on the stationary journal bearing of 41.5° in a direction of driven gear rotation relative to a bearing flat, and a maximum trailing edge angular location on the stationary journal bearing of 54.5° in the direction of driven gear rotation relative to the bearing flat; and a porting path for supplying high pressure fluid from a discharge of the gear pump to the hybrid pad recess, the high pressure fluid supplementing the fluid film during rotation of the gear shaft; wherein the porting path comprises: