초록 ▼

A controlled access enclosure comprises an external frame (1) within which is suspended a cover (15). Access is gained to and from the unit by means of a zipped opening (20) in one part of the enclosure and a flap door arrangement in another part of the enclosure, the flap door being surrounded by a

A controlled access enclosure comprises an external frame (1) within which is suspended a cover (15). Access is gained to and from the unit by means of a zipped opening (20) in one part of the enclosure and a flap door arrangement in another part of the enclosure, the flap door being surrounded by a flange (21) which may be sealed to a hazardous working area to prevent contamination escaping from the working area into the surrounding clean environment.

대표청구항 ▼

A multi-chamber enclosure for use in a hazardous environment and which comprises: an external frame; a flexible cover suspended from and arranged within the frame so as to form a roof, side and end walls of the enclosure; a first closable opening formed in the cover at one end wall of the enclosure

A multi-chamber enclosure for use in a hazardous environment and which comprises: an external frame; a flexible cover suspended from and arranged within the frame so as to form a roof, side and end walls of the enclosure; a first closable opening formed in the cover at one end wall of the enclosure through which an operative may pass between the enclosure and a surrounding clean environment; a second closable opening formed in the cover at an opposite end wall of the enclosure through which an operative may pass between the enclosure and an adjacent hazardous environment; a sealing arrangement provided on said opposite end wall for sealingly communicating said second opening with the hazardous environment; a vent in said one end wall to permit air to be drawn from the clean environment and through the enclosure to said opposite end wall; a flexible partitioning wall arranged within the enclosure to define two separate chambers therein, said partitioning wall including side portions each secured to a respective side wall of the enclosure and defining therebetween an access opening between the chambers; and a freely suspended flexible door flap arranged to close said access opening and located on the downstream side of said partitioning wall, the door flap being movable in a direction away from the partitioning wall in order to uncover said access opening and to allow air to be drawn through the enclosure and being returnable to its closing position when air is no longer drawn through the enclosure.