Abstract: The invention relates to a guide skid for a gate drive which is accommodated sliding in a C-profile, with two lateral openings extending over its length to accommodate a drive cord, a locking element for the coupling and disconnecting from the drive cord and a connecting element for the gate to be moved. The guide skid has a symmetrical outline and when installed has no parts projecting beyond the C-profile, and with the guide skid being provided one face thereof with a continuous slot which is bridged by a bolt forming the connecting element.

Abstract: The invention concerns a drive for closing devices, for example gates or shurrers, with variable speed output drive and a device for detecting a given position of the closing device. According to the invention, the drive speed output depends on the position of the gate and can be controlled depending on the given mechanical closing characteristic of the closing device.

Abstract: A connecting element for holding at least one profiled belt end comprises at least two parts which can be connected to one another and in the installed state, enclose the belt end. One or more of the parts have sections with a negative profile corresponding to the belt end. The belt end is inserted into one or more of the parts in manner such that connection is formed-locking in all directions that deviate from the direction of the joint.

Abstract: A drive, preferably a gate drive with a belt transmission encompassing a drive pulley and an output pulley. According to the invention the drive pulley consists of at least one cylinder with inwardly tapering flanges at its ends. A round belt, rope or similar serves as a drive agent, which is wound a number of times around the cylinder. The return strand of the round belt, rope or similar can be held continuously under tension.

Abstract: The invention refers to a door or gate leaf having a plurality of plates hingedly connected to each other via hinge connections, said plates being pivotable with respect to each other when they are moved from the open position to the closing position or viceversa, wherein the plates each have a front wall and a rear wall as well as at least one plate edge resting against a respective plate edge of an adjacent plate, wherein a first plate edge has a profile with a profile section having a substantially concave design, wherein a second plate edge lying opposite thereto has a convex-shaped profile section being complementary to the concave-shaped profile section, wherein the curvatures of the concave-shaped or convex-shaped profile sections partially extend in a curved manner, in particular in a circular manner, or extend in a polygonal form approximately tracing the course of the curve, and, with its or their center(s) of the circle, lie approximately in or near the adjacent hinge axis or, with its or their pol

Abstract: The invention concerns contact components for a limit switch for gate dri, namely at least one first contact component and at least one second contact component, wherein one of the contact components is arranged to move when the gate is opened or closed. At least the first contact component has a preferably arc-shaped side extending in the direction of contact with the second contact component; the second contact component is flexible in this direction.

Abstract: Fine-mesh warp-knit fabrics of noble metal-containing wires with high specific surface areas, having good mechanical stability, are produced by warp-knitting noble metal-containing wires to form closed stitches, such that the warp-knit fabric has at least 14 stitches per inch, and such that in at least one of the knit weaves forming the warp-knit fabric, the noble metal-containing wires are laid down over at least three stitch spacings.

Abstract: This invention concerns a specially designed rail for mounting a tensioning device in which a mount for its guide component can be positioned at vaus areas of the rail. Pursuant to the invention, the rail has a row of cut-outs in the area of the mount and rows of projections in the direction of the mount.

Abstract: A remote control for the wireless transmission of control commands from a ansmitter to at least one receiver, with an encoding device provided in the transmitter which effects an encoding of the control commands to be transmitted. In a first transmitter different codes are stored for each receiver. Via a data link between the first transmitter and a second transmitter, which data link can be made temporarily, at least one code is transferred from the encoding device of the first transmitter to the encoding device of the second transmitter.

Abstract: A method for monitoring motion of a drive-operable door body between open d closed positions. To monitor movement as sensitively as possible, an actually occurring course of movement is compared with a previously fixed nominal course. A signal for interrupting movement is generated when the nominal course and the actual course, and/or one of the derivations of these, differ from one another by a previously fixed amount.

Abstract: A control system for an electrical motor drive for moving a door between end positions. The two end positions are detected by the control system, and an increment detector associated with the motor drive reproduces the movement cycle of the door. A stop associated with the motor drive marks an end position of the door that corresponds to the open position thereof. This open position is treated as a reference point. A pulse storage device is set to a specific value at this reference point and initiates the beginning of a pulse sequence to reproduce movement of the object between the end positions. The pulse sequence is compared for coincidence with pulses produced by the increment detector upon movement of the door into the opposite end position that corresponds to its closed position.

Abstract: The present invention relates to an electronic circuit and a method for the monitoring of the driving force of a drive mechanism. To reduce the costs for such a circuit by simple technical circuit measures it is provided that the comparator unit used for monitoring is designed as an analog component, while the set-point adjuster is still integrated into the digital control unit of the drive mechanism. The set points stored in the set-point adjuster are fed to a digital-analog converter in such a manner that an analog reference signal can be generated which can be compared with the analog measuring signal of a power pick-up via the comparator unit.

Abstract: A connection device is provided for the receiving of at least one end of a drive device possessing profile, preferably of a toothed belt or a roller chain with the connection device possessing a negative form of the surface profile of the drive device with which the drive device meshes. In order to create a connection device for the connection by closure with a drive device possessing a profile which is simple to manufacture and easy to assemble, the end of the drive device can be joined with the connection device in accordance with the invention by a joining movement in the plane of the running surface of the drive means and in the longitudinal direction of the drive device profile.

Abstract: Drive mechanism for a drive carrier (17) which is drivable for back and fh movement along a guide rail (10), which is connectable to a correspondingly drivable object, having a drive system (1) with a reducing gear (3) and output head (4) and having a drive web (11) driven by same and connectable to the drive carrier which is looped over a turn-around device intended to be located at the end of guide rail (10) facing away from drive system (1), which drive mechanism is so constructed for the purpose of space-saving storage and/or transportation and also orderly final assembly after connection of the guide rails without the risk of a faulty drive web run, in such manner that the drive system (1) or its output head (4) has a storage section (8) in which the drive web (11), looped over the output head and dimensioned for the total guide rail length, shortened in its lengthwise direction by wavelike folds (13,14) is contained in a small space, together with the turn-around device (12), to which storage section (8

Abstract: The invention relates to apparatus for driving a door or the like guided in t least two guides using a drive (1) located in a channel formed as a guide track (2) and which consists of at least one turn-around pinion (5), a chain extending over drive pinion (4) and turn-around pinion (5) and at least one carrier element for a door panel or the like attached to the chain. A structurally simple apparatus which is installable in simple manner is achieved by forming the drive pinion (4), the turn-around pinion (5) and the chain together with the guide track (2) as completely preassembled unit (1).(FIG.

Abstract: A component made of sintered oxides of indium and tin and a method of manufacturing such a component. The mean size of the oxide particles is larger than 2 .mu.m. The empirical density of the component is more than 95% of theoretical. The component is characterized in that at least 97 weight % of the oxide particles are solid solution crystals with a crystalline matrix of indium oxide. The method comprises molding a green body of a powder of indium-oxide and tin-oxide solid solution and sintering the green body at a temperature less than 1100.degree. C. and preferably between 800.degree. and 1050.degree. C.

Abstract: A sliding door which is moveable back and forth by a stationary drive motor nit, which has a drive pinion meshing with a gear rack attached to the door or the door's bottom rail, the gear rack being made of a series of adjacent rack segments extending in the sliding direction of the door and inserted in a retaining channel affixed to the door, the segments being manufactured as finished molded pieces and attached to each other with uniform tooth pitch along the rack, whereby the rack is low in cost, adaptable to various door displacement distances, and parts which are subject to heavy wear are readily replaceable.