Patent ID: 7287560

Claim:
A door fixture to be fastened to a frame of an isolator, comprising a door and a double bayonet closure comprising two bayonet locks, each bayonet lock having a form whose mirror image is not superimposable upon the form of the other bayonet lock for the purpose of reciprocally transferring said isolator from a first state, in which said door which opens from inside said isolator, is open and detached from said isolator frame and a container flange surrounding a container is sealingly locked to said isolator frame, and a second state, in which said door is shut and sealingly locked to said isolator frame and said container flange is detached from said isolator frame, there being provided a first safety device, which allows said door to be opened only when a container flange of a container is sealingly locked to said isolator frame, and a second safety device, which allows for the removal of said container flange from said isolator frame only when said door is sealingly locked to said isolator frame, wherein a locking ring that is rotatably mounted in said frame and can be releasably locked in position, in one end position of which the first safety device is activated and the second safety device is deactivated, and in the other end position of which the first safety device is deactivated and the second safety device is activated.