Patent ID: 7390180

Claim:
A hermetic compressor, comprising: a casing filled with a predetermined amount of oil; a motor mounted in the casing that generates a driving force; a compressor that is coupled with a driving shaft of the motor and that compresses refrigerant; and an oil pumping unit, comprising: a trochoid gear that is coupled with the driving shaft of the motor; a pump housing into which the driving shaft is inserted; and a pump cover fixed to the pump housing and having at least one suction hole, wherein the trochoid gear is mounted between the pump housing and the pump cover, and wherein the pump cover has a suction projection that projects away from the pump housing, and wherein the at least one suction hole extends through the pump cover from a lower surface of the suction projection to an upper portion of the pump cover so as to be connected to a volume of the trochoid ear.