Patent ID: 11932411
Assignee: PRATT & WHITNEY CANADA CORP.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC B  F | IPC B

Claim 0:
1. An aircraft engine oil filler apparatus, comprising:
a filler tube configured to be received through a wall of an oil tank of an aircraft engine such that an open upper end of the filler tube is accessible from outside of the oil tank and a bottom end of the filler tube is disposed inside the oil tank;
a valve received at least in part in the bottom end of the filler tube and movable between an open position in which the valve hydraulically connects the filler tube to the oil tank, and a closed position in which the valve hydraulically disconnects the filler tube from the oil tank; and
a float disposed above the valve and operatively connected to the valve to move the valve from the open position to the closed position when oil inside the oil tank rises to a threshold oil level defined by the closed position of the valve, the valve including a piston translationally received in the filler tube and being movable independently from the float for moving the valve from the open position to the closed position when pressure in the oil tank is greater than pressure in the filler tube and when oil inside the oil tanks is lower than the threshold oil level.