Patent ID: 9732840
Date: 2017-08-15
CPC Classifications: B64C,F01M,F16H,F16N

Claim:
1. A dual circuit method of lubricating a mechanical system that includes a tank containing a lubrication liquid, the method comprising: using the lubrication liquid to lubricate the mechanical system simultaneously via a first lubrication circuit and a second lubrication circuit, the second lubrication circuit having a second suction point situated below a limit depth in the tank, the first lubrication circuit including at least one first suction point that can be situated below the second suction point; detecting a drop in the level of the lubrication liquid in the tank to below the limit depth; stopping the flow of the lubrication liquid in the first lubrication circuit; measuring the pressure of the lubrication liquid in the second lubrication circuit; detecting a drop of the pressure of the lubrication liquid in the second lubrication circuit; reestablishing the flow of the lubrication liquid in the first lubrication circuit; and stopping the flow of the lubrication liquid in the second lubrication circuit.