Patent ID: 7823651

Claim:
A trip mechanism comprising: a ground working tool connected to a carriage extending from a frame; a hydraulic cylinder comprising a barrel connected at a first end to the frame and a piston having a piston head and a piston shaft, the piston configured to be slidably received through a second end of the barrel to move within the barrel, wherein the barrel extends from the first end to the second end along a line having a primary component of direction parallel to the generally horizontal plane; a link rod having a first end removably connected to the piston and a second end removably connected to the carrier; and wherein the hydraulic cylinder is biased to have the piston arranged proximate to the second end of the barrel in a working position and be moved toward the first end of the barrel and move the link rod to at least partially extend into the barrel in a tripped position; wherein the link rod has a smaller diameter than the piston; wherein the link rod has a smaller diameter than the piston shaft; wherein the first end of the link rod is removably connected to the piston shaft; wherein a length of the link rod extending between the piston and the carrier is adjustable; wherein the ground working tool engages an impediment to travel; the trip mechanism disengages; whereby the hydraulic cylinder contracts along the generally horizontal direction and allows for reciprocal motion by the ground working tool at least partially in the vertical direction perpendicular to the generally horizontal plane.