Patent ID: 9650759
Date: 2017-05-16
CPC Classifications: E02F

Claim:
1. A control apparatus for hydraulic machinery having functions that are governed by the flow of hydraulic fluid through a hydraulic control block, wherein said hydraulic control block is controlled by a cab control system with a plurality of operator controls, said control apparatus comprising: a remote control unit having actuators that correspond to at least some of said plurality of operator controls in said cab control system, wherein said remote control unit produces control signals when said actuators are utilized; a valve arrangement for each of said actuators, wherein each valve arrangement includes a first valve means and a second valve means; and a controller that selectively opens and closes said first valve means in response to said control signals received from said remote control unit to control flow of said hydraulic fluid between said first valve means and said second valve means; wherein, said first valve means and said second valve means for each said valve arrangement have a first configuration and a second configuration, said first configuration having said first valve means open to permit said hydraulic fluid to flow through said first valve means to said second valve means as said second valve means channels said hydraulic fluid received from said first valve means to said hydraulic control block to control at least one of said functions of said hydraulic machinery as directed by said control signals from said remote control unit, and a second configuration having said first valve means closed therein preventing said hydraulic fluid from flowing through said first valve means to said second valve means while enabling said hydraulic fluid to flow from said cab control system to said hydraulic control block to control said functions of said hydraulic machinery as directed by said plurality of operator controls of said cab control system.