Patent ID: 8215926

Claim:
A sealed compressor comprising: a housing for receiving a compressor pump unit and an electric motor; said electric motor driving a driveshaft, said driveshaft extending to drive an element within said compressor pump unit to compress a fluid; said motor including a stator spaced from a portion of said housing by a gap, and said driveshaft driving a counterweight, said counterweight having a radially outermost portion which extends radially outwardly beyond a radially innermost portion of said stator, and said radially outermost portion of said counterweight having an angled face to drive fluid towards said gap, said angled face extending circumferentially from a leading edge of said counterweight, that will lead the counterweight as the counterweight rotates with the drive shaft; and said angled face being defined by an angle defined by a plane that extends perpendicular to a drive axis of said driveshaft, said angle being between 20 and 45° measured from said plane.