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 system for guiding and supporting a leaf of a platform-access door capable of moving relative to a fixed panel in a horizontal translational movement in a plane of the leaf between open and closed positions, includes a rail extending in a direction of the horizontal translational movement, a first set of rollers collaborating with the rail with and being made up of: a main roller in contact with a lower bearing surface of the rail; first and second secondary rollers which are vertically offset from one another and are respectively in contact with the lower bearing surface and with an upper bearing surface of the rail and are spaced from the main roller.

Roller assemblies for hanging panels are disclosed herein. Roller assemblies according to the present disclosure are configured to support a hanging panel and include an elongate rail configured to be mounted on a surface. The roller assembly includes a trolley assembly, which includes a bearing assembly configured to translate the trolley assembly along the elongate rail and a bracket coupled to the bearing assembly and configured to be coupled to the hanging panel. The elongate rail includes a rail adjustment system configured to facilitate adjusting a position and/or an orientation of the elongate rail with respect to the surface. The rail adjustment system is concealed in a rail-assembled configuration, and includes at least two spaced-apart rail adjustment mechanisms.

A bi-fold overhead door system that includes a frame, a bi-fold overhead door and a hydraulic cylinder. The bi-fold overhead door has an upper door leaf and a lower door leaf. The upper door leaf is pivotally mounted to the frame. The lower door leaf is pivotally mounted to the upper door leaf. The hydraulic cylinder has a first cylinder end and a second cylinder end. The first cylinder end is operably attached to the frame. The second cylinder end is operably attached to the upper door leaf. The hydraulic cylinder is capable of moving the bi-fold overhead door between a closed configuration and an open configuration. At least one of the frame and the upper door leaf has a slot formed therein. When the bi-fold overhead door is in the closed configuration, the hydraulic cylinder is substantially recessed in the slot.

A vehicle side door opening/closing device includes a motor, a gear case to which the motor is fixed and which is fixed to a side door, a speed reducer built in the gear case, an output gear provided to the speed reducer, a rack of which an end portion is pivotably supported to a vehicle body and which is provided with a rack gear, and an engagement holding unit connected with the gear case and movably supporting the rack while constantly keeping an engagement allowance between the rack and the output gear. The side door is moved in an opening direction by pushing the rack and in a closing direction by pulling the rack respectively following the rotation of the output gear. The engagement holding unit rotates around a rotation center of the output gear by a swing of the rack following the opening/closing operation of the side door.

The disclosure relates to a sliding door operator system (1) for opening and closing an opening (2), comprising: a track (3) configured to be mounted at an upper part (21) of the opening (2), one or more sliding door(s) 10 slidably connected to the track (3) and comprising a door leaf (4) configured to be moved along the track (3) between an open (o) and closed (c) position, and a drive unit (5) mounted on the door leaf (4), moveably connected to the track (3) and arranged to move the door leaf (4) between the closed position (c) and the open position (o). The disclosure further relates to a drive unit (5) for moving a sliding door leaf (4) between an open and a closed position (O, C) and a control system (11) for regulating one or more sliding door (10).

A foot operable door opener operates, without using one's hands, and without an electrical assist. The entrance cycle is initiated by stepping on a pedal. This force drives the pedal a ¼ turn, engaging a soft wheel to open the door. The pedal is hard linked to a crank arm which goes into a unidirectional crank shaft hub to turn the wheel. The downward pressure from the pedal pivots a ratcheted hinge connected to a bracketed spring-loaded wheel assembly to keep constant pressure to the ground. A gear box or multiple pumps of the pedal turns the wheel two or more 360 degrees rotations, opening the door to allow the entrant to pass until the foot pedal is dis-engaged. This action releases the ratcheting hinge mechanism, allowing the spring assisted wheel assemble to rotate to its original up position, releasing the wheel from the ground, allowing the door to close.

A frame structure includes a frame body, a corner connector and roller mechanism arranged in a splice of adjacent side frames at a bottom of the frame body, and a guide mechanism clamped to a top of the frame body. A glass positioning slot is disposed on a first side of an inner side wall of a side frame of the frame body. A mounting slot is disposed on a first side of an outer side wall of the side frame of the frame body and used for fixing the guide mechanism or the corner connector and roller mechanism. The glass positioning slot is adjacent to the mounting slot along a lengthwise direction of the first side of the inner side wall. A sliding door is further provided.

An opening and closing structure of a sliding door for a vehicle includes: a sliding door disposed on a side surface of the vehicle and configured to be slidably open and closed in a longitudinal direction of the vehicle; at least one rail arranged in a longitudinal direction of the vehicle on one of a vehicle body of the vehicle and the sliding door; at least one roller arranged on the other one of the vehicle body and the sliding door, the at least one roller configured to slide while being fitted in the at least one rail; and a sliding unit disposed on a side of the vehicle body or the sliding door on which the at least one roller is arranged, the sliding unit configured to slide the at least one roller in a direction in which the sliding door slides. The at least one roller is configured to slide with respect to the vehicle body and the sliding door.

A holding and opening mechanism for a pivoting element which is mounted to be pivotable relative to a supporting element about a first axle via a joint, with a pivoting arm acting between the pivoting element and the supporting element is provided. The pivoting arm is pivotally mounted about a second axle wherein the free end of the pivoting arm acts on a control surface of a guide element. A torsion spring is provided which acts on the pivoting arm in the direction around the second axle, a fixed part and a part pivotable relative thereto likewise provided, with the one part including the guide element and the other part including the pivoting arm. The pivotable part is adapted to be pivotable relative to the fixed part about the joint and the first axle, the pivotable part is connected to the pivoting arm and the pivoting element and the fixed part is connected to the supporting element, the control surface in cooperation with the torsion spring and the pivoting arm determines the holding and opening force via the pivot angle of the pivoting element.