Container handler with programmed electro-hydraulic control circuit

Abstract From the Canadian patent

Container Handler With Programmed, Electro-Hydraulic Control circuit Abstract of the Disclosure, Container handlers comprise a plurality of double-acting hydraulic cylinders to effect the various side shift, twist lock, tilt, height adjustment and, spread modes of operation. Separate control valves and hoses, entrained over the mast assembly having the attachment thereon, are required to effect such functions selectively. A programmed electro-hydraulic control circuit reduces the required number of hoses to two and provides a non-complex system which can be operated expeditiously. The control circuit for example, comprises a main control valve and a master switch, each movable between first …