Patent attributes
An electric socket includes a casing having two apertures and a shutter member, which has two bores, provided under the casing. The shutter member may be moved between a first position, in which the shutter member closes the apertures of the casing, and a second position, in which the bores of the shutter member are aligned with the apertures of the casing by a driving device. The shutter member is moved downward when a plug is inserted, and the shutter member will be moved to the second position at the same time. When the plug is pulled out, two biasing members will urge the shutter member upward, and a return device will return the shutter member back to the first position that the shutter member will close the apertures automatically when the plug is pulled out.
