Patent ID: 7261526
Filing Date: 2007-08-28
Classification: F01C,F04C

Abstract:
1. In combination, a rotary machine having a housing supporting a vane motor, said vane motor including a cylinder, a spindle rotary supported in said cylinder and vanes reciprocally mounted in said spindle, said cylinder having an axial passageway formed in the outer periphery thereof for receiving pressurized air from an opening formed in said housing, a plurality of axially spaced inlet cylindrical holes radially spaced from said axial passageway, a plurality of axially spaced circumferential grooves formed in the outer portion of said cylinder flowing pressurized air from said axial passageway to certain of said axially spaced inlet cylindrical holes, a bearing supporting said spindle mounted in a cavity downstream of said axial passageway, said axial passageway in fluid communication with said cavity for flowing a portion of said pressurized air thereto to bath said bearing, a second axial passageway in fluid flow relationship with said axially spaced inlet cylindrical holes formed in the outer diameter of said cylinder for leading said portion of pressurized air into said axially spaced inlet cylindrical holes, and a plurality of discharge apertures formed in said cylinder for discharging the spent air from said cylinder and being circumferentially spaced from said axially spaced inlet cylindrical holes.