Patent ID: 6817481
Filing Date: 2004-11-16
Classification: E06B

Abstract:
An access opening closure device configured to be positioned about an opening on a secure side of a support structure, the access opening closure device comprising:a housing having an outer portion and an inner portion, said inner portion defining a fixed receptacle; a first door movably supported on the housing, the first door being movable from a first position at least partially covering a first opening of the receptacle to a second position at least partially uncovering the first opening of the receptacle; a second door movably supported on the housing, the second door being movable from a first position at least partially covering a second opening of the receptacle to a second position at least partially uncovering the second opening of the receptacle; at least one lock operable to retain the second door in its first position and in its second position; and wherein the first door and the second door are positioned to be primarily operable only from a secure side of a support structure on which the access opening closure device is positioned.