Patent ID: 11892014
Assignee: VOLVO CONSTRUCTION EQUIPMENT AB
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  E | IPC E  F

Claim 0:
1. A hydraulic machine comprising:
a power source;
an assist motor comprising an inlet port and an outlet port and configured to provide torque-assistance for the power source;
a tank;
a recovery line connected to the inlet port to allow fluid to flow to the inlet port;
a first return line connected to the tank to allow fluid to flow to the tank;
a self-priming line connecting the first return line and the inlet
an anti-cavitation line connecting the outlet port and the self-priming line and configured to allow fluid to flow from the outlet port to the self-priming line; and

a drain valve provided on the self-priming line between a joint to which the anti-cavitation line is connected and the first return line to allow fluid to flow from the joint to the first return line or prevent fluid from flowing from the joint to the first return line.