Patent ID: 11959542
Assignee: GE INFRASTRUCTURE TECHNOLOGY LLC
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 8:
9. The oil supply system according to claim 7, wherein, in a vacuum operation mode, the vacuum pump is operative to apply the pressure differential, the oil check valve is operative to prevent oil from flowing from the second oil receptacle to the first oil receptacle, and the gas check valve is operative to prevent gas from flowing from the second oil receptacle to the first oil receptacle,
wherein the pressure differential generates a positive pressure in the second oil receptacle and the negative pressure in the first oil receptacle and the transmission casing indirectly through the first oil receptacle and the first oil return line, and
wherein the first oil supply pump is operative to maintain a level of oil in the first oil receptacle below a threshold level.