Abstract: A connector assembly for connection to a preconditioned air port on an aircraft that includes a rotatable coupling, a retractable latch, and a protective cage. The retractable latch is actuated by rotation of the protective cage relative to the upper coupling section of the coupling. The protective cage surrounds the coupling and includes at least a first and second protective bumper at opposite ends of the protective cage. The protective cage protects the connection from coming in contact with the ground.

Abstract: A connector assembly for connection to a preconditioned air port on an aircraft that includes a rotatable coupling, a retractable latch, and a protective cage. The rotatable coupling has an upper coupling section with a circumferential ring on the exterior surface rotatably connected to a flanged surface on a lower coupling section. The lower coupling section includes a lower and adapted to be connected to the air duct. The retractable latch is actuated by rotation of the protective cage relative to the upper coupling section. The retractable latch is attached to the exterior of the upper coupling section and has a latching end and a pin on the other end. The protective cage has two or more circumferential slots and a guide slot on the interior surface.

Abstract: A "no-lift" container trailer is disclosed having a vertically movable roller tray with parallel rollers thereon which when tangent to the roll plane, and solely support a container thereon allow the container to be moved onto or off the trailer. A vertically movable caster tray of the trailer has fixed caster wheels thereon with their axes of rotation intersecting a vertical axis near the center of the trailer. When the wheels provide sole support for the container at the roll plane the container may be rotated about the vertical axis to any desired position. Manually operated cams are provided to sequentially move only the rollers tangent to the roll plane for supporting the container only on the rollers to move both the rollers and wheels tangent to the roll plane, and to move the rollers below the roll plane for supporting the container only on the wheels thus transferring the containers between the rollers and the wheel at the roll plane without lifting the container.