Abstract: A swinging-and-sliding door for vehicles which opens in two mutually perpendicular steps, a first step wherein it bends out of a doorway-closed position and into a ready-to-slide position and a second step wherein it slides aside horizontally into a doorway-open position. The door is mounted with a roller carriage and a horizontal track fastened to the inside of the door essentially halfway up. The roller carriage is mounted in a doorway immediately adjacent to a vertical edge of a doorframe opposite to the leading edge of the door in the closed position and on the same level as the track. The roller carriage travels back and forth in the track and in and out in the same direction as the first door-opening step on a carriage holder. The door is at least to some extent flexible in the direction it moves in during the first door-opening step and is subjected to tension such that the middle of the door will resiliently bend to a prescribed extent in a direction opposite that of the first door-opening step.

Abstract: A device for moving a swinging and sliding door in a mass-transit car, especially a car that travels along a track. Each panel of the door slides lengthwise along a guide element. The guide element moves as part of a four-point articulation across the plane of the panel. The lengthwise motion of the leaf is coordinated with its transverse motion by a rail. The rail is fastened to the doorframe. Guide means are fastened to the panel and engage the rail. A drive mechanism on the panel directs force toward the guide element. As the drive mechanism (20-22, 30 & 31, or 40 & 4n1) reacts it exerts torque on an expansion element (25, 35, or 45) between the guide element (3) and a supporting component (25.2, 35.2, or 45.2) attached to the doorframe (16). The torque produces a force substantially normal to the guide element. The force generates the transverse motion.

Abstract: A swinging and sliding door for a vehicle, especially a motor vehicle, with a door panel, with at least one pivoting arm secured to the wall of the vehicle, with a carriage articulated to the end of the arm and sliding back and forth on a carrier connected to the door panel, and with a drive mechanism secured to the wall of the vehicle and having one wheel that drives a flexible linear-transmission structure guided by rollers and attached to the door panel to generate the sliding motion and another wheel that generates the swinging motion. The axis of rotation of the first wheel and that of the second wheel are concentric with the axis of rotation of the pivoting arm and both wheels can be coupled to a common motor by way of automatic clutches.

Abstract: An exterior swing-out and sliding door for vehicles, especially motor vehicles, in which the door panel travels on a roller carriage along a track on the outer wall of the vehicle approximately between the horizontal midpoint and the lower longitudinal edge of the panel, in which additional guides are positioned in the vicinity of the upper and/or lower longitudinal edge of the door panel, and which has a drive mechanism with a motor that drives by way of a driving roller a continuous, flexible, linear transmission that extends around pulleys, that is fastened at one point along its circumference to the roller carriage, and that has its driving strand positioned along the track.

Abstract: A swinging and sliding door for rolling stock, especially a car that rides on a track, in mass transit. The panel of the door slides along a guide that pivots across the plane of the door on two cranks with vertical axes. The door has a system of articulations that will ensure a sufficient angle on the part of the door panel as the door begins to open even when the cranks are relatively short. The cranks, a rigid coupling that has the guide mounted on it and connects the cranks, and crank journals that are rigidly secured to the door frame form a four-member articulation, with the cranks rotating in opposite directions.

Abstract: A rotating drive mechanism for swinging doors, especially on vehicles, with a helical transmission consisting of a stator that is rigidly connected to the housing of the rotating drive mechanism, a rotor that can rotate but cannot move axially and that is rigidly connected to the driveshaft, a coupling component that moves axially to rotate the rotor in relation to the stator, and a pneumatic or hydraulic drive cylinder with a piston rod that is connected to the coupling component. The drive cylinder is an annular cylinder that has an outer and an inner jacket as well as an annular piston between the inner and the outer jacket. The coupling component is a nut that extends into the inner cylinder jacket and surrounds a rotor in the form of a threaded spindle. The rotor extends coaxially through the inside of the inner jacket and is, where it emerges from the housing, in one piece with the stub of the takeoff shaft.

Abstract: A rotating drive mechanism for operating the wing of a swinging door, especially of a vehicle. The wing is articulated by pivoting arms to a rotating post, which it rotates along with. When the door is closed, the wing can be raised by axial displacement of the post into a locked position, where locking components on the stationary door frame and on the wing of the door engage each other. The post is driven by a strictly linear mechanism that is controlled by pressure medium and its linear motion is converted into a rotation by a helical transmission.

Abstract: A device for activating a rotating post, especially one that moves a swinging-door panel in a motor vehicle and which need no additional space at each end of the rotating post. The post is rotatably mounted in a mount at each end. The post is a hollow cylinder that accommodates a worm gear driven by a bi-directional pneumatic piston-and-cylinder drive. The piston-and-cylinder drive is completely accommodated inside the post and consists of at least two piston-and-cylinder units pneumatically connected in parallel with a common piston rod. Each unit incorporates a piston and cylinder aligned within a sleeve that is rigidly fastened to and coaxial with one of the mounts. The pressure medium that drives the panel in one direction is supplied to each cylinder through a coaxial bore in the piston rod. The bore extends axially and connects all the pistons. The bore communicates with the insides of the cylinders in the vicinity of each piston face that faces the same direction.

Abstract: An electromechanical device for activating a rotating post that moves the leaf of a swinging door on a vehicle, especially a mass-transit vehicle. An electric motor activates the column by means of an intermediate worm gear. The motor outtake shaft is coupled to the worm-gear intake shaft. A worm wheel is coupled to the worm-gear outtake shaft, which activates the rotating post. The electromechanical activating device contains an emergency mechanism for uncoupling the worm-gear outtake shaft from the worm wheel in relation to their rotation. The mechanism incorporates a coupling that can be disengaged between the outtake shaft and the worm wheel, which is mounted over it coaxially. The mechanism also involves several balls situated such that they can be forced into recesses in the outtake shaft while simultaneously engaging axial grooves in the inner surface of the worm wheel.

Abstract: A helical ball gearing for converting axial or linear motion into rotary motion and vice versa. In a helical ball gearing including a rotor having at least one helical groove, a non-rotatable but axial displaceable shaft having at least one helical groove and being disposed at least partly within the rotor, a plurality of balls disposed in the helical grooves between the rotor and shaft, and a guide for the balls serving as a bearing for the balls, the guide being elastically resilient in the axial direction. The guide thereby allowing the balls to shift axially within the grooves so as to reduce wear on the grooves. The guide may be a helical spring.

Abstract: A swing-and-slide door for vehicles, especially railroad passenger vehicles. The leaf is suspended at the top on a positioning bushing on a supporting rail that extends over the total width of the door. At the bottom of the door a horizontal positioning rail is secured to the leaf. A positioning section slides back and forth mechanically secured in the positioning rail. The securing rail and positioning section are secured to the studs of two cranks. The cranks are fastened vertically separated to the vehicle superstructure by means of horizontal shaft studs and cranks studs that extend parallel to the direction of displacement, are connected by a connecting section, and are driven by a pneumatic cylinder. The door is opened in a sequence of two stages. The leaf is first displaced out of the closed position into a ready-to-slide position and then slid horizontally to the side in that position. The bottom and top of the leaf are mechanically secured during both stages.

Abstract: Driving device for the wing of a swing-out type sliding door, in particular, a swing-out type outer sliding door for vehicles, including two or more spaced apart reversing rollers, one of which is located adjacent to the doorway. A belt is guided around the rollers and is pivotably attached to the wing of the door. The belt is reversibly driven, exerting a force on the wing coincident to its direction of movement.

Abstract: A swingable sliding door for a motor vehicle comprising a door panel movable between open and closed positions for a door opening in a body. A swing arm is pivotably connected to the body and a carriage is pivotably connected to the swing arm. An elongated support is mounted on the door panel and the carriage is slidably mounted on the support for undergoing slidable movement thereon as the door panel travels between its open and closed positions. The carriage is preferably in the form of a sleeve and the elongated support is preferably in the form of a bar which slidably supports the sleeve. The swing arm is pivotably supported at the bottom of a vertical pivot shaft secured to the body.

Abstract: A swingable sliding door for a vehicle, comprising a guide assembly on the top of the door traveling in a guide rail arranged above the door, the guide assembly comprising a swing arm pivotally attached to the door and including an arcuate, reversely bent portion connected rigidly to a roller assembly which travels in the guide rail. The bent portion of the swing arm straddles an end post of the door opening when the door is in open position to maximize the access opening when the door is fully opened.

Abstract: A device for securing the locked position of a motor-vehicle door activated by a rotating post and that is locked or unlocked by raising and lowering the post has a disk attached to the post and a rotating support in the form of a double-armed lever mounted below the disk on a stationary section of the frame so that the support can be displaced into a position in which the disk rests on the top of one of the lever arms. The axis of rotation of the support is positioned on the frame section and lies in a plane that is perpendicular to the direction in which the rotating post is raised and lowered. The bottom of the second lever arm of the support rests on and is forced by a compression spring against a stop on the frame section and the bottom of the first arm of the support has a recess. A rotating locking element, which is also a double-armed lever with two support surfaces on one arm, engages the recess.

Abstract: A suspension device for a door leaf of a swing out sliding door of a vehicle comprising a horizontal, fixed suspending member, a frame movable along the fixed suspending member and a swing arm connected to the frame for movement therewith. The swing arm is pivotably connected to the frame by a first hinge and the door leaf is connected by a second hinge to the swing arm. A roller is connected to the swing arm and is rollably supported in a fixed rail and a guide arm pivotably connected to the door leaf carries a third hinge pivotably connecting the guide arm to the frame. The fixed rail includes a curved end portion which controls movement of the roller to cause the door leaf to displace radially as the roller travels to and from the curved end portion.

Abstract: A pivotable sliding door with a main track is suspended in a door frame with a running track by a suspension means having two staggerly jointed partial carriages, the rollers of one of the partial carriages rolling in the main track and the rollers of the other partial carriage rolling in the running track.

Abstract: An anti-clamping device for a vehicle door driven in opening and closing movements by a turnable shaft in turn driven by a transmission rod. The anti-clamping device comprises a telescopic element interposed in the transmission rod and including first and second telescopically engaged parts having retracted and extended positions. A control member is mounted on one of the parts and can be in the form of a projecting pin while spaced switches are mounted on the other of the parts. The pin projects between the switches to operate a selected one thereof depending on whether the parts are telescopically retracted or extended to reverse the direction of door movement. Thereby when an obstacle is present in the path of travel of the door, stress in the transmission rod will be accompanied by telescopic retraction or extension of the parts depending upon whether the door is in its opening or closing movement which produces closure of one of the switches to reverse the direction of door movement.

Abstract: Obstacle sensing apparatus for a pivotal door has a drive for operating the door between open and closed positions. Linkage is provided between the pivotal column which supports the door for swinging movement and a platform pivotally mounted on a fixed adjacent structure. When an obstacle is encountered the reactive force pivots the platform through the linkage and activates switches which reverse the drive. Elastic blocks keep the platform centered except when an obstacle is encountered.