Patent ID: 8043043

Claim:
A method for unloading material in a container removably positioned on a transport vehicle, the vehicle having a cab, a body member, a tilt frame member rotatably attached to the body member, and a tilt hydraulic cylinder mechanism for tilting the tilt frame member relative to the body member, the method comprising the steps of: (a) providing a movable carriage member on said tilt frame member; (b) providing a multi-stage central hydraulic cylinder for moving said carriage member longitudinally along said tilt frame member, said central hydraulic cylinder having a first end connected to said tilt frame distal to said cab member and second end connected to said carriage member; (c) attaching said movable carriage member to the container; (d) positioning the transport vehicle adjacent a dump site; (e) activating said tilt hydraulic cylinder mechanism and elevating the end of the tilt frame adjacent the cab member; and (f) repeatedly activating said central hydraulic cylinder to cause said carriage member and container to move longitudinally back and forth along a portion of the length of the tilt frame member and thereby imparting a shaking action to the container in order to assist in unloading material from the container.