Patent ID: 7770749

Claim:
A cover set comprising: a bin; a ring mounted on the bin; a cover pivotally connected to the ring and moveable from a closed position to an open position; a lifting device lifting the cover from the ring to the open position; and at least one buffer comprising a first portion mounted to one of the cover and the ring, with the buffer further comprising a second portion, wherein the second portion of the at least one buffer includes a curved portion between the first portion and a leg terminating in an end, with the curved portion having a flexibility, with the first portion, curved portion and leg defining a U-shape, with the leg contacting another of the cover and the ring in the open position for buffering the cover near the end of the lifting, with the leg of the second portion of the at least one buffer not being in contact with the other of the cover and the ring in the closed position, with the curved portion flexing to move the end of the leg closer towards the first portion as the cover moves to the open position when the buffer contacts the other of the cover and the ring.