Patent ID: 7556513

Claim:
A shutter assembly for a receptacle comprising: a back plate having at least one back plate aperture; a front plate disposed adjacent to the back plate; a shutter disposed between the back plate and the front plate, the shutter arranged to at least partially block the at least one aperture and being moveable to unblock the at least one back plate aperture; at least one pivot structure on the shutter to define a fulcrum; the shutter capable of pivoting about the fulcrum between a first pivot position and a second pivot position; the shutter being moveable to unblock said at least one aperture in the second pivot position and the shutter locked from moving to the unblock position when the shutter is in the first pivot position; and first and second biasing members, the second biasing member arranged to bias the shutter away from the back plate, the second biasing member configured to allow transverse movement of the shutter; and the first biasing member to provide a bias force against lateral movement of the shutter.