The present invention is directed to a cover device for more hygienic handling of a lid for a container. The two-speed motor includes a stator mounted to a non-rotating outer housing, and a rotor that is mounted for rotation relative to the stator. mH2O\u2003\u2003wherein An\u2212 is CO32\u2212, SO42\u2212 or Cl\u2212, n is 1 or 2, andx, a, b and m are values that satisfy the following conditions,0.