Structurally-Installed Access Device For Accepting Connection By A Fire Hose Nozzle To Introduce Firefighting Fluid Into An Enclosed Space Of A Structure

A fire stairway access box configured to be installed in a structural element between a fire stairway and an interior hallway to introduce firefighting fluid into the interior hallway from the fire stairway, the access box comprising:

• a first fireproof box configured to be inserted in an opening formed in the structural element from a stairway side, the first fireproof box having a hinged cover which opens into the stairway;
• and
• a second fireproof box configured to be inserted into the first fireproof box from a hallway side, the second fireproof box having a hinged cover which opens into the hallway, the second fireproof box comprising:
• a bracket attached to interior sides of one of the first fireproof box and the second fireproof box;
• a housing installed in the bracket, the housing comprising:
• a first face surrounded by a first flange and having an opening in a central portion thereof, the opening being surrounded by a cylindrical socket extending from the first face in a first direction,
• a cylindrical body portion extending from the first face in the first direction, and
• a second face surrounded by a second flange and having an opening in a central portion thereof, the second flange extending from an end of the body portion distal from the first face so that the first face, the second face, and the body portion define an interior of the housing;
• and
• a movable nozzle connector disposed within the interior of the housing, the nozzle connector having:
• a connection portion configured to receive an inserted fire hose nozzle in a locking connection, and
• a cylindrical nozzle stop portion extending from the connection portion, the nozzle stop portion being movably coupled within an interior of the socket of the first face.

An access unit configured to be installed in a structural element of a structure to introduce firefighting fluid into an interior of the structure from an exterior of the structure, the access unit comprising:

• an outer housing configured to be inserted in an opening formed in the structural element from an exterior side, the outer housing comprising:
• a bracket attached to an interior side of the outer housing;
• an inner housing installed in the bracket, the inner housing comprising:
• a first face surrounded by a first flange and having an opening in a central portion thereof, the opening being surrounded by a cylindrical socket extending from the first face in a first direction,
• a cylindrical body portion extending from the first face in the first direction, and
• a second face surrounded by a second flange and having an opening in a central portion thereof, the second flange extending from an end of the body portion distal from the first face so that the first face, the second face, and the body portion define an interior of the inner housing;
• and
• a movable nozzle connector disposed within the interior of the inner housing, the nozzle connector having:
• a connection portion configured to receive an inserted fire hose nozzle in a locking connection, and
• a cylindrical nozzle stop portion extending from the connection portion, the nozzle stop portion being movably coupled within an interior of the socket of the first face.