Abstract: A pane assembly (2) for a window (8) arranged in the outer wall (4) of an aircraft (6) in a window plane (10) contains a transparent cover pane (12) in a cover plane (14), a switching film (16) in a scattering plane (18), which is switchable between a transparent state (ZT) and a diffuse state (ZD), a luminous film (20) in a light plane (22) having LEDs (24), wherein a spacing (A) between each two LEDs (24) in relation to one another is at least five times their transverse extension (Q), wherein the pane assembly (2) is arranged in front of the window (8) in an installed state (M), so that scattering plane (18), light plane (22), and window plane (10) extend in parallel to one another and the luminous film (20) is arranged between the window (8) and the switching film (16), and window (8), switching film (16), and luminous film (20) are located aligned one behind another on the line of sight (26).

Abstract: A reversible window shutter includes a frame and reversible panel inserts. The panel inserts can be attached to the frame in a first position in which a first side of the panel inserts are visible through the frame, and a second position in which a second side of the panel inserts are visible through the frame. Each side of the panel inserts can have a different design or style, giving the user the ability to change the visible style of the window shutter. Each panel inserts may be a two-part insert, with each panel insert part having an outer surface with a decorative design, and an inner surface with connection features configured to engage the connection features of the other panel insert part.

Abstract: A reversible window shutter includes a frame and reversible panel inserts. The panel inserts can be attached to the frame in a first position in which a first side of the panel inserts are visible through the frame, and a second position in which a second side of the panel inserts are visible through the frame. Each side of the panel inserts can have a different design or style, giving the user the ability to change the visible style of the window shutter. Each panel inserts may be a two-part insert, with each panel insert part having an outer surface with a decorative design, and an inner surface with connection features configured to engage the connection features of the other panel insert part.

Abstract: An aisle containment system is disclosed. The aisle containment system includes a frame defined by wall beams, header frames, and a plurality of posts secured to the wall beams and header frames. The header frames extend the width of the frame and the wall beams extend the length of the frame. A plurality of blanking panels extend from the floor to one of the wall beams. The plurality of blanking panels have a top, a bottom, a first side and a second side. Vertical stiffeners are positioned along at least one of the first side and the second side of each blanking panel. The blanking panels overlap adjacent blanking panels along the length of the frame. The blanking panels are laterally adjusted to fill openings in the aisle containment system.

Abstract: A mechanism is provided for balancing and positioning a sash of a self-balancing double-hung window assembly. The mechanism may include a fixed length cable, a pulley, first and second brackets and an adjustment member. The fixed length cable may include first and second ends. The pulley may support the cable. The first bracket may include one or more attachment points relative to the first end of the cable and may include an upper end and a lower end. The second bracket may be movable relative to the first bracket and may be configured to support the sash. The adjustment member may engage and extend through the lower end of the first bracket and may be movable relative to the first bracket to cause corresponding movement of the second bracket relative to the first end of the cable.

Abstract: A sliding panels system for hiding a flat screen television, has a wall attachment panel, a pair of post members spaced from one another and attached to the wall attachment panel. Extendable upper and lower rail assemblies attached between the post members. A first side support bracket assembly connected between the upper and lower rail assemblies on first ends thereof, and a second side support bracket assembly connected between the upper and lower rail assemblies on second ends thereof, such that the space between the first and second support bracket assemblies can be adjusted by the extendable upper and lower rail assemblies; and first and second panel members respectively attached to the first and second support bracket assemblies, such that the first and second panel members can be moved between an open and a closed position.

Abstract: A trim panel system includes a vehicle trim panel movably coupled to a vehicle body. The vehicle body defines a vehicle body opening. The vehicle trim panel is configured to move between an open position and a closed position wherein the vehicle trim panel covers the vehicle body opening. The trim panel system further includes an arm movably coupled to the vehicle body and a cable coupled between the vehicle trim panel and the arm. As such, the vehicle trim panel is configured to move from the closed position toward the open position in conjunction with a corresponding movement of the arm relative to the vehicle body and through the vehicle body opening.

Abstract: A slider window assembly for a vehicle includes a frame portion having upper and lower rails, at least one fixed window panel fixed relative to the frame portion, and a movable window panel that is movable along the rails between a closed position and an opened position. The lower rail may comprise a unitarily formed rail having (i) a channel portion that extends at least partially along the fixed window panel and an opening and (ii) a cable guide formed at each end region of the channel portion. A carrier is at a lower portion of the movable window panel and is configured to move along the channel portion of the lower rail. The cable guides are configured to engage or receive a respective sheath of a cable assembly of a cable drive system, with a cable of the cable assembly being attached at the respective end of the carrier.

Abstract: In an aspect, the invention is directed to a backlite assembly for a vehicle such as a pickup truck. The backlite assembly incorporates a motor assembly and a motor driven belt engaged with a guide rail that can be mounted to a structural support that is bonded to the fixed windows of the backlite assembly. A motor driven belt is used to actuate a movable window between closed and open positions. The lower support can also integrate the rail directly therein. The lower support can additionally integrate a housing for the motor assembly.

Abstract: An elevator door system includes an elevator car having a front face defining a door opening. At least one elevator door is coupled to the front face of the elevator car for movement between an open position exposing the door opening and a closed position covering the door opening. At least one drive motor is mounted on the front face of the elevator car and is disposed between a lower edge and an upper edge of the elevator car. The drive motor is drivingly coupled to the elevator door for moving the elevator door between the open and the closed positions.

Abstract: Simultaneous displacement device for sliding doors, being a first sliding leaf (7) joined to a first cogged belt (9) established between a first set of cogged pulleys (11) and (12) which rotate freely on a first axis (13) and second axis (14) respectively, and a second sliding leaf (8) joined to a second cogged belt (10) established between a second set of cogged pulleys (15) and (16) which rotate freely on said first axis (13) and second axis (14) respectively, said device comprising clutching means (2) which enable to adopt a first position where the first cogged belt (9) and the second cogged belt (10) move independently, and a second position where the first cogged belt (9) and the second cogged belt (10) move integrally to enable the simultaneous displacement of the first sliding leaf (7) and of the second sliding leaf (8).

Abstract: A power sliding back window assembly for a motor vehicle is provided. The assembly can include a window casing with a first window pane and a second window pane fixedly attached thereto. Also included can be a generally U-shaped guide rail that has a first end and an oppositely disposed second end. A third window pane having a portion or edge fixedly attached to a glass carrier can also be included. A first cap can be attached to and located at least partially within the first end of the generally U-shaped guide rail and a second cap can be attached to and located at least partially within the second end of the generally U-shaped guide rail.

Abstract: A drive device for a sliding door system having a transom and at least one door leaf guided along the transom. The drive device includes: a housing which can be mounted on the transom; a pulley which can be driven in rotation by a drive, the pulley being mounted for rotation on the housing and having a flange with locking elements adjacent to the housing; an endless traction mechanism guided around the pulley for moving the at least one door leaf linked to the traction mechanism; complementary locking elements which can be moved relative to the housing to engage the locking elements on the flange and thereby prevent rotation of the pulley; and an electromechanical actuation device which moves the complementary locking elements in response to an impulse emitted by a locking control.

Abstract: A multi-level window shutter has a shutter frame movably supporting at least one first level external shutter panel via an external panel opening mechanism mounted on the shutter frame. The external panel movably supports at least one second level internal shutter panel via an internal panel opening mechanism mounted on the external panel and connected to the shutter frame and to the internal panel for simultaneous displacement of the internal panel upon displacement of the external panel relative to the shutter frame. The panels move between a closed position in which they are in a side-by-side configuration relative to one another in spaced apart parallel planes and an open position in which they are in an over-one-another configuration relative to each other in the spaced apart parallel planes.

Abstract: The present invention provides a control apparatus for automatic sliding doors that can be used with a plurality of door brands and models. The invention includes a control box and an idler pulley mounted to the door header. Both the control box and idler pulley can be mounted on a variety of door models by means of specific header brackets that are configured for each door model. The control box also provides a universal signal interface that can interpret sensor signals from a plurality of door models. A drive belt revolves on the idler pulley and is moved by a motorized pulley controlled by the control box. At least one belt bracket is fastened to the drive belt with a belt clamp, wherein the belt bracket is attached to a sliding door panel. Like the control box and idler pulley, the belt bracket can be used with a variety of door models and is attached to the sliding panel by means of a door bracket that is specific to the door model in question.

Abstract: A device for the synchronized actuation of sliding doors, provided for two sliding doors moving indistinctly in the same plane or in two planes forming any angle, consisting of two pairs of cogwheels (8-8?) and (9-9?) between which there is arranged, inside of each pair, an also cog belt (10-10?), a connection part (13-13?) fixed to the corresponding suspension grip (6-6?) of the respective sliding door being joined to each one of these belts. Joined to the two neighboring cogwheels (9-9?) there are respective cogwheels (18-18?) of a larger diameter, directly meshing with one another, to synchronously transmit motion from one cog belt (10-10?) to the other, cogwheels (18-18?) which are kept joined by means of parts (20) bridging their shafts (19-19?) and maintaining the drive transmission both when the doors are coplanar and when they form any angle.

Abstract: A vehicle door assembly is provided. The door assembly is located on vehicle and includes at least first and second doors each movable between open and closed positions. A door slide assembly is coupled to the vehicle and comprises a traversing segments assembly. The traversing segments assembly includes first and second segments which are movable in first and second directions. The first door is coupled to the first segment and the second door is coupled to the second segment. Movement of the first door causes movement of the first segment in the first direction which causes movement of the second door in the second direction between open and closed positions.

Abstract: A hung window includes upper and lower sashes that may operate simultaneously. Two or more pulleys or rollers are mounted at each lateral side of the window frame. A cable interconnects each lateral side of the upper and lower sashes. The cables are routed over the pulleys thereby suspending the sashes and allowing simultaneous movement of the upper and lower sash when force is applied either to raise the lower sash or lower the upper sash. This arrangement allows the hung window to be self-balancing thereby eliminating special hardware typically needed to balance the window. Simultaneous movement of the upper and lower sashes also enables the upper and lower sashes to create openings for increased air circulation within an adjacent room.

Abstract: A vertically sliding freight elevator landing door with a safety brake that deploys when a chain suspending the door breaks. The safety brake is adapted for use on both panels that slide up to open or that slide down to open. The brake, which is simple in construction and installation, comprises, principally, a caliber block fixed to the door and a roller cam assembled in the block. A spring biases the roller cam towards a wedge lock position while a cable normally holds the roller cam in an inactive position. The cable and, therefore, the roller cam are released when the associated door suspension chain breaks. The roller cam, operating between a tilted internal surface in the caliper block and a door guide rail quickly frictionally brakes the door on the guard rail.

Abstract: In accordance with one embodiment of the present invention, a sliding, bi-parting, service window may be operated by pressing on a push operator. In response to such push operation, a pair of bi-parting windows may be caused to slide apart sufficiently to provide a service opening. In some embodiments the windows may automatically close when pressure is released, for example, in response to the action of a weight that moves to a position of higher potential energy in response to opening of the windows.

Abstract: A pulley apparatus (27) is disclosed which is adapted for use with a double hung wind. (10). The apparatus is used in pairs which are mounted in a recess (30) formed in the head (20) of the double hunt window. A pair of sash cords (25) are routed through the apparatuses and are attached to each sash so as to counterbalance one to the other, without the use of springs or extra weights.

Abstract: An external window shutter for use in front of an exterior window opening includes a frame surrounding the window opening and is attached to an exterior wall surface. The shutter has two panels that are movably mounted on the frame. The panels are mounted generally parallel to the wall surface and to the frame, and are actuatable along a path of travel between an open configuration and a closed configuration. The shutter includes a first guide member attached to respective upper and lower portions of a window facing surface of each panel and extending substantially along the entire length of each panel; and a second guide member attached to respective upper and lower portions of an outwardly disposed surface of the frame and extending substantially along the entire length of the upper and lower portions of said outwardly disposed surface of the frame.

Abstract: A vehicular sliding window assembly of the present invention includes first and second spaced apart fixed window panes and a polymeric member provided on perimeter portions of the fixed window panes. The polymeric member forms a gasket and includes at least one guide track molded in the polymeric member. At least one sliding window pane is positioned in the guide track and is positionable between a closed position and at least one open position. The window assembly further includes a support rail, which supports the sliding window pane above a lower surface of the lower guide track whereby the weight of the sliding window pane is borne by the support rail and not the lower guide track to reduce the friction between the guide track and the sliding window pane to provide a smooth sliding action when the sliding window pane is moved along the guide track between its closed and open positions.

Abstract: An external window shutter for use in front of an exterior window opening includes a frame surrounding the window opening and is attached to an exterior wall surface. The shutter has two panels that are movably mounted on the frame. The panels are mounted generally parallel to the wall surface and to the frame, and are actuatable along a path of travel between an open configuration and a closed configuration. The shutter includes a first guide member attached to respective upper and lower portions of a window facing surface of each panel and extending substantially along the entire length of each panel; and a second guide member attached to respective upper and lower portions of an outwardly disposed surface of the frame; and extending substantially along the entire length of the upper and lower portions of said outwardly disposed surface of the frame.

Abstract: In accordance with one embodiment of the present invention, a sliding, bi-parting, service window may be operated by pressing on a push operator. In response to such push operation, a pair of bi-parting windows may be caused to slide apart sufficiently to provide a service opening. In some embodiments the windows may automatically close when pressure is released, for example, in response to the action of a weight that moves to a position of higher potential energy in response to opening of the windows.

Abstract: A sliding door arrangement with at least one door leaf mounted in a door frame includes a drive for moving the at least one door leaf. The at least one door leaf has a lateral closing edge and a running surface at the lateral closing edge. The door frame has a counter-support surface, wherein, in a closed position of the at least one door leaf, the running surface is located essentially immediately below the counter-support surface and the counter-support surface rests on the running surface for preventing lifting of the door leaf.

Abstract: A window regulator for moving a pair of slidable window panes toward and away from one another utilizes three flexible, inextensible members such as cables to achieve a pull open/pull closed mode of operation of the slidable panes. First and second of the flexible members are attached to respective first and second pane carriers and to a drive drum, and the third flexible member connects the first and second pane carriers. The first and third flexible members are routed around pulleys located at outboard ends of a guide rail along which the pane carriers travel such that rotation of the drive drum in one direction pulls the panes toward an open position, and rotation of the drum in the opposite direction pulls the panes toward a closed position.

Abstract: A powered drive assembly for positioning various slidable components within a vehicle interior. The powered drive assembly includes a motor assembly operably coupled to a flexible flocked drive cable which is supported for rotation within a housing. The flocked drive cable provides a helical surface. Specific coupling members are adapted to engage the helical surface and operably couple the drive cable with the slidable component. For example, in one preferred embodiment a coupling bracket operably couples the flocked drive cable to a slidable window assembly of the type used in the rear opening of a pick-up cab for opening and closing the window. In a second preferred embodiment, the coupling member operably couples the drive cable to a curtain assembly located within the interior of an over-the-road truck cab for opening and closing the curtain.

Abstract: A pull-pull power sliding window assembly is disclosed, comprising a frame, a sliding pane slidable within the frame, and a pull-pull cable assembly for moving the sliding pane between a open and a closed position. The pull-pull cable assembly comprises a drive motor, a drive drum, and drive cable comprising a cable and a semi-rigid conduit wrapped around the cable, connecting the drive drum to the sliding pane for pulling the sliding pane back and forth. A retainer is mounted on the drive motor, a plunger is slidably received into an opening of the retainer, and the drive cable is routed through the plunger and into the retainer opening. A spring is positioned between the retainer and the plunger and is movable from an expanded condition where the plunger is biased away from the retainer and the drive cable is biased away from the sliding pane, and a compressed condition where the plunger is closer to the retainer and the drive cable extends further out of the conduit.

Abstract: A power window assembly in a vehicle includes a slidable window pane mounted to the vehicle for movement in a first lateral direction to an open position and in a second lateral direction to a closed position. The assembly includes at least one mounting bracket securely attached to the window pane and having a pocket therein and a power drive mechanism for selectively moving the window pane between the closed position and the open position. Preferably, at least one connector arm is laterally coupled to the mounting bracket. The connector arm includes a locking plate and a body portion having a longitudinally extending body slot. The locking plate is longitudinally inserted into the longitudinal body slot to adjustably connect the window pane to the power drive mechanism.

Abstract: A door closure system for one or more swinging doors includes, in its most basic form, a door closure assembly for a door pivotally mounted on a hinge axis in a door frame. The assembly includes a closure mechanism mounted on the door frame adjacent the door with a rotatable member extending therefrom, an elongated arm having a secured end fixed for rotation with a rotatable member and a free end extending alongside the door, and a roller wheel rotatably mounted on the free end of the arm and extending therefrom so as to overlap the door for engaging it and rolling about a wheel axis substantially parallel to the hinge axis when the door swings about the hinge axis from a first pivotal position to a second pivotal position. This door closure assembly can also be applied to a double swinging door by adding more closure mechanisms and interconnecting them for the desired synchronization. A stop for holding the door open to a set position can also be provided.

Abstract: A pretensioning system for a relating cable synchronizing movement of elevator car doors includes a compression spring and a spacer disposed on one end of the relating cable. The compression spring is compressed to the length of the spacer disposed internally to the spring to calibrate tension in the relating cable so than a no-slip condition is ensured.

Abstract: A motor-driven window regulator for use with a horizontally sliding window installed in the rear window opening of a pickup truck cab. The sliding window is moved between a closed position wherein it fills a gap between two fixed, outboard mounted windows and an open position wherein it slides to overlap one of the fixed leaving the gap open. The sliding window is actuated by a pair of linear actuation cables, each of which is attached to the sliding window at a first end and to a motor-driven cable drive drum at a second end. The linear actuation cables extend away from the sliding window in opposite directions parallel with the direction of sliding movement and wrap around the cable drive drum in opposite directions so that rotation of the cable drive drum in one direction places a first cable in tension to pull the sliding window toward the open position and rotation of the cable drive drum in the opposite direction tensions the second cable to pull the sliding window toward the closed position.

Abstract: An automatic sliding door operator includes a top door operator and a bottom door operator, each operator having a motor driven sprocket driving a tooth belt to which the sliding doors are attached, the motors being separately driven in a position-synchronized fashion in response to related encoders connected with each motor to provide positional information.

Abstract: Disclosed is a door operator mounted in a space between a cab fascia and a sill edge plane. A feature of the door operator is a drive unit having a drive shaft, the drive unit being mounted in a central portion of the door operator, wherein drive pulleys are fastened to the drive shaft, thereby providing a drive force to linear transmission elements disposed about each of the drive pulleys. Another feature of the door operator is a modular mounting plate, wherein the door operator is mounted to the mounting plate, and in turn, the mounting plate is mounted in the space between the cab fascia and the sill edge plane.

Abstract: A power window assembly in a vehicle includes a slidable window pane mounted to the vehicle for movement in a first lateral direction to an open position and in a second lateral direction to a closed position. The power window assembly further includes first and second mounting brackets securely attached to the window pane and each having a pocket therein. The power window assembly also includes a power drive mechanism for selectively moving the window pane between the closed position and the open position. The power drive mechanism includes first and second connector arms each laterally coupled to the first and second mounting brackets, respectively. The connector arms each have an upper portion seated in the pockets of the respective mounting brackets by slip-fitted insertion therein and are vertically slidable relative the pockets to adjustably connect the window pane to the power drive mechanism.

Abstract: An automatically actuated door arrangement is provided. The arrangement includes a plurality of slidable doors which are opened and closed by an electric motor/cable arrangement. Open and close switches control the opening and closing of the doors. A sensor device provides the open doors/close doors signals to the controller, and eventually to the motor. The motor is connected to the cable drive by a clutch arrangement which allows slippage should the movement of the doors become obstructed. The door travel path may be arranged in a slight V-shape, to allow for more efficient sealing of the door bottoms. A controller is provided to receive, process, and distribute electronic signals for controlling the extent of the door opening, the speed of opening and closing, and other operating parameters. The controller includes a series of indicators for monitoring the status of the door arrangement, and also includes inputs for altering the operating parameters of the door arrangement.

Abstract: A junction for neighboring car bodies of a track-bound vehicle has a first door guided within a first end wall of a first car body for closing a doorway of the first car body and a second door guided with an adjacent second end wall of the neighboring car body for closing a doorway in the neighboring car body. The first and the second end walls are spaced apart and delimit a space therebetween. The first and the second doors are guided at the first and the second end walls so as to be movable in opposite directions. At least one coupling element for coupling the first and the second doors extends through the first and the second end walls and the space therebetween. The first and the second doors have a substantially identical construction and substantially identical moving characteristics. The coupling element is preferably a cable and a sleeve enclosing the cable.

Abstract: An automatic door operator which works in conjunction with a sliding door(s) and existing track on which the door(s) moves, to open and close the door(s) without manual pushing and pulling. The invention is useful on single-sliding door installations, biparting single-track installations, and biparting overlapping door installations.

Abstract: An automatic sliding door in which a main drive moves at least one door panel to open and closed positions. An electromagnetic clutch is located between the main drive and the door panel for the purpose of disconnecting the panel from the drive and to open the door in event of a power failure. An auxiliary drive is connected to the door panel and stores energy received when the door panel is in a closed position, so as to drive the door to the open position when the clutch disconnects the main drive from the door panel in event of power failure. The auxiliary drive has a rubber cable actuated always with the door so that the auxiliary drive can be tested with every movement of the door panel.

Abstract: A power mine door system including a door frame to be installed in a mine passageway to define a generally rectangular doorway. A mine door is defined by a pair of generally rectangular door leafs which are hinged on the door frame at opposite sides of the doorway for swinging between an open position to permit passage through the doorway and a closed position in which the door leafs are generally coplanar and close the doorway. The door leafs are so dimensioned that there is a substantial vertical gap between the door leafs when they are closed to accommodate convergence of side walls of the passageway. A relatively wide vertical sealing flap is secured to one of the door leafs for overlapping a face of the other door leaf when the door is closed for covering the gap between the door leafs.

Abstract: A mine door system including a door frame to be installed in a mine passageway to define a generally rectangular doorway. A mine door is defined by a pair of generally rectangular door leafs which are hinged on the door frame at opposite sides of the doorway for swinging between an open position to permit passage through the doorway and a closed position in which the door leafs are generally coplanar and close the doorway. The door leafs are so dimensioned that there is a substantial vertical gap between the door leafs when they are closed to accommodate convergence of side walls of the passageway. A relatively wide vertical sealing flap is secured to one of the door leafs for overlapping a face of the other door leaf when the door is closed for covering the gap between the door leafs.

Abstract: A double door swing control apparatus for facilitating the simultaneous opening of a pair of conventional, separately hinged double swing doors having hinges attached externally to the door such that the pivot axis of the door is external to the door. The invention includes a pair of spools and a pair of brackets secured to the top or bottom surface of the respective doors. A shaft connects each spool to a respective bracket, whereby movement of the associated door causes rotation of that spool. Cables connect and extend between the spools such that rotation of one spool causes an equal and opposite rotation of the other spool causing the doors to open and close in unison. The invention may be mounted either above or below the door.

Abstract: A power window assembly for a rear window opening of a truck cab has a pair of stationary window panes spaced apart and securely mounted in the rear window opening and defining therebetween a center window opening. First and second movable window panes are slidably located in the rear window opening and adapted for sliding movement toward each other to a closed position where the panes abut each other closing the center window opening and away from each other to an opened position overlying at least a portion of the stationary window panes thereby opening the center window opening. A reversible electric motor has a primary drive gear for generating rotary motion of the primary drive gear. A tape having a plurality of slots engaging and driven by the primary drive gear is connected to the first movable window so that the first movable window pane moves between the closed position and the opened position.

Abstract: A swinging-sliding door for vehicles, particularly for passenger vehicles, includes two door leaves positioned outside and within the wall of the vehicle in a closed state.

Abstract: An opening/closing mechanism for use in a circular-arc shaped sliding door including a transverse frame having a circular-arc horizontal sectional shape and mounted on the upper parts of a pair of left and right door bodies; a drive pulley and a driven pulley mounted on the circumferentially one end of the transverse frame and on the other end thereof, respectively; and an endless belt wound between and around the drive pulley and a driven pulley, the pair of door bodies being connected in place to the endless belt so that they may be slidably moved in opposite directions to each other along a pair of left and right guide rails, respectively, each of which is bent in a circular-arc shape concentric with the center of the circular-arc of the transverse door frame.

Abstract: A magnetic door opener device adapted to be positioned below a countertop made of non-magnetic materials, the device having a pair of magnets which attractively interact with a pair of magnets attached to the bottoms of a pair of windows which are suspended on a trolley for movement to or fro to determine closed and opened positions of the window. The device underneath the countertop comprises a pair of spaced toothed sprockets supporting an endless belt having inner and outer runs, the outer run supporting a magnet adapted to magnetically cooperate with a magnet in the bottom of one of the windows, and the other run of the belt supporting a different magnet adapted to attractively cooperate with a magnet in the bottom of the other window. A motor control and limit switches are provided for controlling the opening and closing positions of the windows when a control switch is operated by an operator.

Abstract: Sliding doors, particularly for railway and tramway vehicles, comprise two opposing doors which are movable relative to a doorway between an emplaced closed position and a withdrawn open position by guide means and motorized drive means. The drive means include a motorized chain transmission connected to the two doors to effect their opening and closing sliding movements, and rotatable cam means defining, for each door, an arcuate track with which feeler means connected to the two doors cooperate to effect, in the initial phase of the opening sliding movement and in the final phase of the closing sliding movement of these doors respectively, the withdrawal and the emplacement of the doors relative to the doorway.

Abstract: There is disclosed a door motion control apparatus for the passenger entry and exit doors of a mass transit vehicle, which passenger entry and exit doors are opened by a drive motor when the vehicle is stopped at a desired location for passenger entry and exit within a station.

Abstract: A system consisting of a door closure and door hanger which are integrated to achieve improved operation and simple construction and particularly characterized by a single action pneumatic cylinder and an internal return spring coiled around the piston rod to achieve pneumatic opening of the sliding doors and spring closing of the latter respectively in combination with novel track units featuring removing the load on the balls when the doors are in closed position and shorter track units less subject to longitudinal deflection of the passenger vehicle. The return spring is taken advantage of to produce unhurting impact and closure force at the end of the closing course and to eliminate the sealing requirements around the piston rod at the corresponding end of the pneumatic cylinder.