Patent ID: 8378597

Claim:
A cover assembly of a container, comprising: a first part and a second part which is adapted to mount on an open top of the container, the first part having an opening and the second part having a through hole which is located corresponding to the opening, the second part including two sidewalls and a front wall connected between the two sidewalls, each sidewall having a plurality of guide slots defined in an inside thereof and a plurality of plates respectively and slidably engaged with the guide slots between the two sidewalls, each said plate being slidable with respect to its adjacent plate(s); and a driving unit located on the second part and driving the plates to move along the guide slots such that the plates can be selectively piled up to open the through hole, an induction unit connected to a front end of the first part and including an induction member which activates the driving unit, wherein a plurality of stepped edges are defined in two insides of the opening of the first part and a top of two ends of each of the plates are slidably in contact with the stepped edges, each of the plates has a top surface having two linear first stuck portions which extend in a direction in which the plates slide and are substantially parallel to each other, each of the plates has a front portion having two second stuck portions disposed on a bottom surface thereof, and the second stuck portions are slidably mounted to and movable along the corresponding first stuck portions respectively so that the plates move forward and rearward without moving laterally.