Disclosed is an automatic released foldable door having a two-way door structure, which foldable door comprises a first closing door device (11) and a second closing door device (13), wherein a first door leaf (2) is connected to one side of the first closing door device (11), the second closing door device has one side connected to the first door leaf (2) and the other side thereof connected to a second door leaf (6), the second door leaf (6) is a door-in-door and a two-way door structure; and the foldable door further comprises a plurality of fixing devices (3, 31, 7) and at least one hinge (4). The foldable door has a relatively small turning radius and can be folded for receiving, and the door-in-door can be rotated in different directions.

Disclosed are a refrigerator and a folding guide device provided therein. The refrigerator includes a body including a storage compartment, a door that opens and closes the storage compartment, a support provided to be changeable in position to an unfolded position to be unfolded outward from the storage compartment and a folded position to be folded in the storage compartment, a folding guide device interlinked with an opening and closing operation of the door to apply a rotational force for changing the position of the support to the support. Here, the folding guide device includes a slider pressurized by the door and linearly moved, and a conversion outputter provided to connect the slider with the support and configured to convert a linear force input by the slider that linearly moves into a rotational force for changing the position of the support and output the rotational force.

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 ballistic garage door assembly and a kit for converting a standard garage door uses sheets of ballistic material secured to the exterior shell of the standard garage door panels along with inserts at the joints between adjacent garage door panels. Joint inserts applied to the horizontal ends of the garage door panels provide bullet resistant characteristics at the joints. Aluminum sheets with multiple plies of ballistic material between the aluminum sheets are applied to the entire garage door shell. Insulated foam is place on the innermost aluminum sheet to provide additional ballistic performance for the converted garage door. Increased levels of ballistic protection will utilize thicker aluminum panels and an additional external ballistic bumper to increase ballistic performance of the joints between the garage door panels. The outward aesthetic appearance of the garage door does not change appreciably, although a door lift with greater horsepower may be required.

A horizontal garage door assembly includes a plurality of panels, which are pivotally connected at adjacent side edges. A top rail receives the plurality of panels and includes a first straight portion, a curved portion, and a second straight portion. A motor is positioned at a first end of the first straight portion, a tensioning mechanism is disposed on a first panel, a gear mechanism is positioned at a second end of the first straight portion. A connecting band connects the motor, the gear mechanism, and the tensioning mechanism to form a loop along a length of the top rail. The motor drives the connecting band such that the plurality of panels moves between a closed position, in which the plurality of panels is substantially received in the first straight portion, and an open position, in which the plurality of panels is substantially received in the second straight portion.

A bi-fold door stop controls movement and travel of lead and pivot doors in a set of vertically hung bi-fold doors. The bi-fold door stop has at least two non-parallel surfaces that each may act upon one or both of the lead and pivot door stiles to limit movement in two directions. Movement transverse to the track longitudinal axis is limited when the bi-fold door is either fully open or fully closed, while parallel movement is controlled by limiting the extent that the bi-fold door may be opened. At least two non-parallel surfaces are provided that each may act upon one or more of the lead and pivot door stiles, while an additional surface may act upon the face of the pivot door. The bi-fold door stop may be fabricated as a single part using common molding operations, and acts directly on the door panels, thereby preserving bi-fold door hardware.

A collapsible gate may provide a temporary barrier to prevent movement between rooms, or to prevent access to a staircase, in a home or commercial building. The collapsible gate may be secured to framing material within a wall and adapted for storage within a wall cavity, such as a pocket door frame, when not in use. The collapsible gate may be vertically retractable and adapted to fit between two framing studs to stow within a wall cavity and out of sight. The collapsible gate may include a counterbalance to maintain the gate within the wall cavity when the gate is in the fully open position, and to assist in opening the gate when the gate is lifted from a closed position.

A latch assembly connected to the drive unit of a bi-fold door for retaining the bi-fold door secure to a building has elongated straps attached to rotatable latch drums mounted on the outer ends of the drive shaft of the drive unit. Lift drums powered by a motor driven gearbox raise and lower the bi-fold door. Latch assemblies having springs attached to the straps maintain tension on the straps during the opening and closing of the bi-fold door.

A panel of a sectional door includes a panel frame and a sheet of material that is coupled to the panel frame. The panel frame includes a top frame member, a bottom frame member, a first side frame member and a second side frame member. The frame members include a rear surface and a front surface, and the front surface includes a ledge. The sheet of material is coupled to the front surface such that a bottom edge of the sheet rests on the ledge and a front surface of the sheet is unobstructed by the panel frame.

A panel of a sectional door includes a panel frame and a sheet of material that is coupled to the panel frame. The panel frame includes a top frame member, a bottom frame member, a first side frame member and a second side frame member. The frame members include a rear surface and a front surface, and the front surface includes a ledge. The sheet of material is coupled to the front surface such that a bottom edge of the sheet rests on the ledge and a front surface of the sheet is unobstructed by the panel frame.