Patent ID: 9340956
Filing Date: 2016-05-17
CPC Classification: E02F

Claim Text:
1. A work vehicle comprising: a frame including generally upwardly extending laterally spaced side members; a boom structure including a pair of arms pivotably connecting the boom structure to the frame; a pressurized fluid system operably associated with the boom structure for raising and lowering jointly each of the arms along a path of travel adjacent a corresponding side member; a stop member selectably extending outwardly from at least one of the side members between a locking position and a retracted position, the locking position extending at least a portion of the stop member into the path of travel of a corresponding arm of the boom structure to prevent a lowering movement of the boom structure beyond a predetermined height; and a boom lock system for preventing the fluid system from applying a fluid force to lower the boom structure when the stop member is in the locking position; wherein the boom lock system comprises a selectably actuatable switch between a first position and a second position, the first position corresponding to the stop member being in the locking position; wherein the boom lock system comprises an electrical circuit comprising the switch and a valve in fluid communication with the boom structure, wherein in response to the switch being in the first position, the electrical circuit is open, preventing the fluid system from applying a fluid force to lower the boom structure.