Patent ID: 8142132

Claim:
In combination with an apparatus having an articulated work arm that is movable to a transport position and a hydraulic operating system therefore, a control circuit comprising: a switching device operably connected with the work arm hydraulic operating system having a first position configured for directing flow in a first direction and a second position configured for directing flow in a second direction that is reversed from the first direction; an electrically activated switch electrically connected with the switching device; an electrical source for operating the electrically activated switch; and a switching mechanism electrically connected in series between the electrical source and the electrically activated switch to control the operation of the electrically activated switch, the switching mechanism including a manually-actuated operator switch and a position-actuated switch located remotely from the operator switch in an operative position associated with the work arm and responsive to the position of the work arm so as to connect the electrical source to the electrically activated switch when the operator switch is closed and the work arm is at a preselected position in order to reverse fluid flow from the hydraulic operating system applied to the work arm.