Patent ID: 7051897

Claim:
A closure for sealing with a pressure vessel, the closure comprising: a neck for attaching to the vessel, the neck having an access port and an interior profile for radially receiving a circumferential locking member when the door is in the closed position; a door sized to close off the access port in the neck; the circumferential locking member carried by the door for locking the door to the neck, the locking member being radially moveable between an open radially inward position and a closed radially outward position; a seal for sealing between the neck and the door when the locking member is in the closed position; an operator for moving the locking member between the open position and the closed position; and the locking member comprises a plurality of locking segments interconnected by a flexible band positioned within a radially inward opening slot in each of the locking segments, with each locking member including a neck portion having a width less than a width of the flexible band to retain the flexible band within the slot.