Patent ID: 9579864
Date: 2017-02-28
CPC Classifications: B30B

Claim:
1. A method of powering a compactor ram of a waste compactor, comprising the steps of: providing a hydraulic power unit operably associated with a hydraulic cylinder and piston assembly for powering said compactor ram of said waste compactor, said hydraulic, power unit comprising providing said hydraulic cylinder and piston assembly with the pressurized hydraulic fluid generated by both said first and second pumps when an operating pressure of said motor/pump assembly is less than a predetermined threshold; providing said hydraulic cylinder and piston assembly with the pressurized hydraulic fluid generated by only said first pump when the operating pressure of said motor/pump assembly is greater than the predetermined threshold; and controlling said directional control valve to selectively operate said hydraulic cylinder and piston assembly in extending and retracting modes of operation.