Pump System

Abstract

One embodiment of the pump system includes a cover housing and a main body affixed to one another for operation. A drive and idler gear may be mounted within a gear chamber in the main body for rotation there about, and inlet fluid may be provided on both the axial and radial surfaces of the drive and idler gear. The cover housing may be outfitted with one pressure relief channel or with two pressure relief channels of different geometric sizes and with different actuation pressures. The drive and/or idler gear may have dimples fashioned on an axial surface thereof, and lubricant troughs may be fashioned at various locations in the main body and/or the cover housing to reduce wear within the pump.

1 . A rotary pump comprising:
 a. a main body having an inlet port and an outlet port, wherein a cover housing cooperatively engages said main body;   b. a rotary gear set positioned in said main body, said rotary gear set comprising:
 i. a stator ring gear having a central opening therein, wherein said stator ring gear is formed with a plurality of dimples on an axial surface of said stator ring gear, wherein said plurality of dimples is positioned adjacent said cover housing, and wherein said stator ring gear is formed with a plurality of stator radial bores extending from an outer peripheral surface of said stator ring gear to said central opening; 
 ii. a rotor gear positioned in said central opening of said stator ring gear, wherein said rotor gear is formed with a plurality of dimples on an axial surface of said rotor gear, wherein said plurality of dimples is positioned adjacent said cover housing, wherein said rotary gear set is configured to pressurize a fluid supplied to said rotary gear set via said inlet port and delivery said fluid to said outlet port, and wherein said outlet port is oriented substantially perpendicular with respect to said plurality of radial bores. 
   
     
     
         2 . The rotary pump according to  claim 1  wherein said plurality of radial bores is further defined as four said radial bores. 
     
     
         3 . The rotary pump according to  claim 2  wherein said plurality of radial bores is further defined as being oriented at an angle of 90 degrees with respect to an adjacent said radial bore. 
     
     
         4 . The rotary pump according to  claim 1  wherein said rotary pump is further defined as being cooperatively engaged with an internal combustion engine. 
     
     
         5 . The rotary pump according to  claim 1  wherein said rotary pump is further defined as having an axis of rotation that is substantially vertical. 
     
     
         6 . The rotary pump according to  claim 3  wherein said rotary pump is further defined as being oriented such that the axis of rotation for said stator ring and said ring gear are substantially vertical. 
     
     
         7 . The rotary pump according to  claim 6  wherein said plurality of dimples in said stator ring gear and said plurality of dimples in said ring gear are configured to form a fluid film between said stator ring gear and said cover housing and between said rotor gear and said cover housing.