A sliding door assembly includes a door frame with a top trim member, a bottom sill, and side jambs connected between the top trim member and the bottom sill, and a primary sliding panel secured in the door frame. The top trim member includes a track configured to support a weight of the primary sliding panel and prevent the primary sliding panel from coming off the track. Other features include an interlock mechanism to limit relative movement using multiple sliding doors and a brake mechanism to secure the doors in position when the door handle is released. A drop window includes features to accommodate for manufacturing tolerances and box frame assemblies that are out of square.

Proposed is a hinge device having tension maintaining function, the hinge device including: a winding member affixed to a main body of a mounted structure having an inner space formed therein; a hinge member affixed to a door that opens or closes the inner space and mounted on the winding member so as to enable the door to be pivotable; and a tension member having one end affixed to the winding member and the other end affixed to the hinge member, such that the tension member transmits a tension to the door when opening and closing the door.

An embodiment of the present disclosure provides a swing-in type of door structure of a vehicle that includes a door disposed in parallel at both sides of an entrance of a vehicle, and a door arm mounted on one side of the door to open or close the door by rotation, including: a center door bracket of which one end is fixed to one surface of an upper center of the door and that extends in a direction perpendicular to the door; a roller bracket of which one end is coupled to the other end of the center door bracket in a direction perpendicular to the center door bracket; and a roller mounted on the other end of the roller bracket and coupled to be rolled and rotated while in contact with a rail formed on a vehicle body of an upper side of the door.

A sliding/swing complex door for a vehicle includes a sliding door configured to be opened upon a first operation of an outside handle positioned on an outside of the sliding door, a swing door configured to be integrated and opened with the sliding door upon a second operation of the outside handle, and a fixing unit configured to be opened in such a way to be integrated and rotated with the swing door in a state in which the sliding door is fully opened.

A carriage (10) provided with one or more pairs of wheels (14) for moving sliding door (42) is arranged in a sliding seat (44) of an extruded profile (28), made of aluminium or other suitable material and fixed to a wall (48) or ceiling (54). The extruded profile in which the carriage (10) is arranged comprises opposite side walls (30, 32), oriented orthogonally with respect to the upper base (34) and with respect to the lower base (36) of said profile; on said lower base a central slot (38) extending longitudinally is made for the passage of a stem (40) projecting downwards in the direction of the door (42) to which it is connected. The carriage (10) comprises a support body (12) made of plastic, metal or other suitable material, constituting the load-bearing frame of said carriage to which the pairs of wheels (14) are connected, with rivets (16); each of the wheels is paired with an elastic element (20) placed in a recess (24) made along the opposite sides of the support body (12).

A sliding door having a soft-close system, with the sliding door having one or more sliding door panels and having a soft-close bracket. The soft-close bracket includes a soft-close device secured to a door panel and movable within a support rail. The soft-close device is engaged with a stopper in the support rail. Also provided are associated methods for retrofitting a soft-close system to an existing sliding door.

An indexing multi-panel door includes a leading door panel supported on a first track and moveable between open and closed positions, a trailing door panel supported on a second track and moveable between open and closed positions, a motion control track mounted to one of the door panels, a follower mounted to the other one of the door panels, the follower including a first distal end received within the motion control track, the motion control track including features to frictionally engage the first distal end, wherein when the leading door is moved between the open and closed positions, engagement between the first distal end and the features moves the trailing door panel along with the leading door panel, and allows slippage, wherein the leading and trailing door panels move relative to one another as the leading and trailing door panels are moved between the open and closed positions.

A gate opener assembly is comprised of a gate and an anchor assembly having a platform. A plurality of track assemblies on the platform provide a track on which the gate may slide from a first position (closed) to a second position (open) and any position in between. A guidepost having a “Shepherd's hook” configuration guides the gate as the gate passes therethrough. A pair of rollers within the interior of the top of the guidepost makes continuous contact with each side of the top of the gate both while the gate is stationary and in motion. A gate opener controller contains the required electrical connections to fully the operate gate opener assembly. Subterrain anchor supports provide the necessary support for the gate opener assembly. An alternative embodiment accommodates nontraditional configured gates. Installation of the gate opener assembly is performed by do-it-yourselfers in minimal time.

A roller including: a main body portion configured to include an outer ring and a rotatable inner ring on an inner circumferential side of the outer ring; and a covering portion disposed on an outer circumferential surface of the outer ring, the covering portion being made of a synthetic resin in which reinforced fibers are dispersed, wherein the covering portion includes a region in which arrangement directions of the reinforced fibers are aligned.

An apparatus is disclosed for opening and closing a grain or access door on a barge lid or cover, the grain door having a latch connecting the grain door to the barge lid, the apparatus supportable by an overhead lifting system. The apparatus can include a base which is supportable by the overhead lifting system and a mechanical arm assembly connected to the base, the mechanical arm assembly including a first arm rotatably connected to the base, a second arm connected to the first arm, a latch engagement member connected to the second arm; and an actuator connected between the first arm and the second arm, the actuator operable to move the second arm relative to the first arm to disengage the latch on the grain door from the barge lid via the latch engagement member and swing the grain door from a closed position to an open position.