Patent ID: 9022761
Filing Date: 2015-05-05
Classification: F04C

Abstract:
1. A pump fluid driving apparatus, comprising: a housing having a first body plate with a first circular wall section and a second body plate with a second circular wall section, the first and second circular wall sections defining a chamber; and a first gear and a second gear identical to each other with said first and second gears mounted for rotation about their centers within said chamber and disposed adjacent, respectively, said first and second generally circular wall sections, said first and second gears having teeth located about their periphery and operatively positioned with said teeth of said first gear and said teeth of said second gear intermeshed for all angular positions in a rotation of said first and second gears, one of said teeth from said first gear and one of said teeth from said second gear both having a radially extending vane in sealing contact with the respective first and second generally circular wall sections said one of said teeth from said first gear and said one of said teeth from said second gear both including a vane slot extending radially within each of said one of first and second gears, each radially extending vane movable within said respective vane slot and extending radially beyond said respective one of said teeth.