Abstract: A hinge system is used to adjust a cover member between a closed position where the cover member covers at least a portion of a vehicle bed and an open position where the cover member does not cover the vehicle bed. The hinge system may include first and second arms that are pivotally attached and a biasing device operatively connected to the first and second arms that biases the cover member toward the open position whenever the cover member is not in the closed position and that does not bias the cover member toward the open position whenever the cover member is in the closed position.

Abstract: A lid lift system wherein a lift piston is mounted within a wheeled vehicle bed to actuate a lift member which will slidingly move along a slide rail track to open and close a lid upon the wheeled vehicle bed. Furthermore, the lift piston can either be activated by a toggle switch located in the truck cab or by a remote control. Additionally, the lid lift system is configured such that it can either be factory installed or installed by a customer.