Patent ID: 8944793
Filing Date: 2015-02-03
Classification: F04C,F16H,Y10T

Abstract:
1. A main gear pump comprising: a drive gear including a plurality of drive gear teeth; a driven gear including a plurality of driven gear teeth wherein the driven gear is spaced apart from the drive gear such that the driven gear teeth and the drive gear teeth are in meshing engagement; at least one drive bearing arranged next to the drive gear such that a surface of the drive bearing facing the drive gear includes a first relief and a second relief; at least one driven bearing positioned next to the driven gear such that a surface of the driven bearing facing the driven gear includes a third relief and a fourth relief; and wherein the drive gear has 15 drive gear teeth and the driven gear has 13 driven gear teeth, and both the drive gear and the driven gear have a width of about 0.6635 inches (1.685 cm) such that the drive gear has a width to outer diameter ratio of about 0.321, and the width to outer diameter ratio of the driven gear is about 0.364.