Patent ID: 7147264

Claim:
A cover system for an open-topped container having opposite side rails extending along the length of the open top and opposite end rails extending along the ends of the open top, the cover system comprising: a support frame pivotably mounted to the container; a cover supported by said support frame and configured to substantially cover the open top of the container; and a drive apparatus operably coupled to said support frame to pivot said support frame relative to the open top of the container, said drive apparatus including; a mounting beam mounted to the container; an actuator pivotably mounted to a pivot mount at a first end of said beam and including a piston extendable and retractable at an opposite end of said actuator; an arm pivotably mounted at one end thereof to a pivot mount at a second end of said beam and including a roller at its opposite end thereof; a track mounted to said support frame, said track configured to receive said roller for translation therein; and a floating link pivotably attached at one end to said piston and at an opposite end to said arm, wherein the attachment to said piston is the only attachment at said one end of said floating link.