A foldable dual-layered wall structure is positionable in a stowed condition and in a deployed condition. The wall structure includes a first foldable layer having at least a first pair of panels and a first joint rotatably connecting the panels of the at least a first pair of panels. A second foldable layer is positioned adjacent to the first foldable layer. The second foldable layer includes at least a second pair of panels and a second joint rotatably connecting the panels of the at least a second pair of panels. The wall structure is structured such that the first joint is positioned directly opposite a panel of the at least a second pair of panels and the second joint is positioned directly opposite a panel of the at least a first pair of panels when the wall structure is in the deployed condition.

A movable wall system includes a plurality of movable wall panels including a first movable wall panel and a second moveable wall panel rotatably coupled together through at least one hinge. The movable wall system further includes a biasing system which biases the first movable wall panel and the second movable wall panel into an arrangement wherein a panel face of the first movable wall panel and a panel face of the second moveable wall panel are generally parallel.

An apparatus including a receiving channel and a locking clip for securing a folding door in a closed configuration. The receiving channel is mounted to a side of a door frame associated with a closed configuration of the folding door. The locking clip is mounted to the leading edge of the folding door. The locking clip includes sides that extend past sides of the leading edge of the folding door so as to create a ledge on each side thereof. The receiving channel includes cleats on inner walls thereof. The cleats engage the ledges to secure the locking clip within the receiving channel in a closed configuration. The locking clip may be mounted to a center of the leading edge. The receiving channel may traverse substantially the height of the door frame.

A new door system and related technology for a passenger carrying rail vehicle, such as a President's Conference Committee (PCC) streetcar rail vehicle, and a method for retrofitting a rail vehicle door system with the new door system. In some embodiments, the new door system includes an electro-mechanical angle drive motor, a solid door control pivot rod, a door leaf panel clamp that is permanently connected to the solid door control pivot rod, a lever arm that includes a positive locking device and that is coupled to the solid door control pivot rod, and a connecting rod that is attached to the electro-mechanical angle drive motor and to the lever arm to enable the connecting rod to impart motion generated by the electro-mechanical angle drive motor to the lever arm.

A leading end assembly for a movable partition may include a frame, an exterior skin coupled to the frame for covering a leading surface and two opposing side surfaces of the frame, the exterior skin including a leading member forming at least a portion of a leading surface of the leading end assembly and at least two side members, each side member being formed separately from the leading member and forming at least a portion of a lateral side portion of the leading end assembly. Movable partitions may include leading end assemblies and leading end assemblies may be formed by related methods.

Embodiments of the present disclosure relate generally to galley trolley compartment doors that replace traditional trolley retainer latches used to secure trolleys when positioned in galley compartments. The galley trolley compartment doors are designed with engaging arms that help secure the trolleys in place under required loads. Some embodiments of the galley trolley compartment doors are designed with thicknesses that can help improve cooling of the trolley compartment.

An operable wall assembly having a prime mover for deploying and stowing or stacking the wall panels. The operable wall assembly includes a control system for controlling operation of the prime mover and sensors for determining when the panels are fully deployed and fully stacked. The wall panel is installed by applying a three-point camber for spans in the range of 33-40 feet.

An automatic closing structure is disclosed, which is installed between a sash and a corresponding object, wherein the sash is pivotable relative to the corresponding object; the sash includes a frame and a plurality of turnable slats which are arranged in parallel in the frame; the automatic closing structure has a cord which is adapted to automatically close the slats, wherein the cord can be easily assembled into the automatic closing structure, and a tightness thereof can be adjusted.

A trackless free-swinging bi-fold door that eliminates the standard guide tracks of conventional bi-fold doors and replaces them with two pivot pin hinges, a simple door modification and a magnet catch. The door modification consists of a spring mechanism connecting the two door panels. The door can be opened as a straight swinging door, and as a conventional bi-fold door. A hinge attaches the door to a door panel that allows the door to swing entirely out of the way of the door portal.

A customizable closure system comprising panels of a pre-selected size and one or more conversion kits for mounting the panels. A room divider conversion kit comprises a hinge for converting the panels into room dividers, and a bypass conversion kit comprises a header for converting the panels into slidable panel doors, such as a closure for a shower area. Other conversion kits include a swing conversion kit and a hanger conversion kit. One embodiment of the panels further comprises a reinforcing system for securely retaining the panes with the panel.