Cantor Colburn LLP
Reduction of cavitation in gear pumps
A fluid gear pump comprising: a first gear including a concentrically disposed first hub portion and a plurality of first teeth; a second gear including a concentrically disposed second hub portion and a plurality of second teeth, wherein at a time in operation the plurality of first teeth and second teeth contact at first and second contact point to create a backlash volume; a first bearing abutting and coaxial to first hub portion; a second bearing abutting and coaxial to second hub portion; and a bridgeland connecting the first and second bearing, the bridgeland separates a low pressure side from a high pressure side, the bridgeland is located such that the backlash volume closes to the high pressure side and opens to the low pressure side when a rate of change of a volume measurement of the backlash volume is decreasing or about equal to zero.
HAMILTON SUNSTRAND CORPORATION
F F F F
F04C F04C F04C F04C
inventional additional inventional inventional
Marios C. James S. Peter A. T. Xiaoyi
Soteriou Elder Cocks Li