Patent ID: 7942681

Claim:
A protective shutter assembly comprising: a registration member having longitudinal and lateral axes; first and second shutter members slidably mounted in the registration member, each shutter member including a ramp member and a receptacle blocking member, the ramp member being configured to lie in a path of a first receptacle opening and the receptacle blocking member being configured to lie in a path o a second receptacle opening; spring members connected between the registration member and respective ones of the first and second shutter members, the spring members being configured to bias the first and second shutter members so that the ramp members lie in a path of a respective receptacle opening; wherein the first and second shutter members are independently movable such that when an object exerts a force on only one ramp member, a respective shutter member moves relative to the other shutter member such that the one ramp member is longitudinally displaced allowing the object to contact the receptacle blocking member of the other shutter member; and wherein when an object exerts force simultaneously on each of the pair of shutter members, the pair of shutter members are configured to move longitudinally in the same direction for unblocking the receptacle openings.