US Patent 7365282 Pull out air gap switch for wallbox-mounted dimmer

A push/pull switch control is incorporated into the surface pattern of a wall box dimmer having a planar face surface. The switch control is finger nail operated and contains a finger nail groove which is accessible on the bottom end surface of the operator so it can be withdrawn to an open position. A switch position indicia is exposed when the operator is withdrawn. The notch is preferably curved with the cross-curvature of the human finger nail