Abstract: A driving apparatus for an object which can be moved to and fro such as a te wing, comprising a guide block movable along a guide rail (1), said guide block being coupled to the object and to a driving member (2,2') movable by a motor and, with the aim of easy assemblage from only a small number of easily manufacturable components, consisting of a guide block component (3), having slidably supported thereon an actuating member (7), and of a manually actuated coupling member (5) spring-loaded towards the coupled position with the driving member, the actuating member (7) being in operative connection with the coupling member (5) through a bolt (8) stationary with said one member (7) and engaging at a sliding edge construction (9) formed in said other member (5) so that, when the actuating member (7) is displaced, the coupling member is brought against the direction of force of the spring acting thereon from the coupled position in the uncoupled position and automatically held in an end portion of the sliding ed

Abstract: Transmission that converts a rotary into a translational motion and is preferably attached to a motorized drive assembly, with a rotary drive mechanism and a translationally channeled motion-transmitting component that is attached to the drive mechanism in the vicinity of a track and driven by the drive mechanism. A controller wheel is attached to the motion-transmitting component by way of a cogged gear that converts the translational motion of the motion-transmitting component into a rotary motion on the part of the activating wheel. At least one activating component on the controller wheel engages at least one switch in accordance with the angle of rotation of the controller wheel.

Abstract: Methods are known for producing a body from a material susceptible to thermal cracking, in particular from an alloy, by casting a melt of the material in a mold with thermally insulated side walls and a bottom of material with good thermal conducting properties and cooling the melt in the casting mold, where the solid-liquid interface forming as the border between the melt and the already solidified material essentially extends parallel to the bottom and, in the course of the solidification of the melt, moves from the bottom in the direction of the exposed surface of the melt.

Abstract: Catalytic gauzes which have an enlarged surface can be manufactured from a wire made of 90Pt/10Rh, for example, by coating the wire with a base metal, thermally treating the wire under partial conversion of the 90Pt/10Rh into solid solutions with the base metal, dissolving the base metal and weaving a wire gauze. They are used for the oxidation of ammonia and the ammoxidation of methane.

Abstract: A safety arrangement for a motor-driven door or gate used to close building ntrances or doorways, in which a vertically movable overhead door consists of one part or a multiple number of parts. An elastically deformable hollow rubber section is provided at the closing edge of the door, and this hollow rubber section has an interior hollow space with first and second ends. At the first end of this hollow space, there is an air pressure-wave receiver signal transformer, whereas an air pressure-wave transmitter is connected to the second end. This transmitter generates a continuous air pressure oscillation having a first pulse duration and a first pulse frequency when the closing edge is freely movable through a path of motion of the door. The continuous oscillation has a second pulse duration which differs from the first pulse duration, and a second pulse frequency differing from the first pulse frequency when the closing edge strikes against an object positioned in the path of motion of the door.

Abstract: Gate-panel element for a gate panel preferably made out of a number of such elements, a ceiling-component gate panel for example, with a space between outer layers, especially made of sheet metal, that enclose each other, and with a core, made of plastic, especially expanded plastic, that completely occupies the space. The element, in order to save weight, has a layer of plastic fibers against each surface of the outer layers that faces the core.

Abstract: Articulated overhead gate consisting of a series of adjacent and interarticulated panels with their sides facing one another, characterized in that the side of each panel that is uppermost in gate-closed state and faces a preceding panel has a curved surface that is convex in vertical section and the side that is lowermost and faces a subsequent panel has a curved surface that is concave in vertical section, with the result that the mutually facing convex and concave curved surfaces in each pair of adjacent panels demarcate a space that is dictated by the hinge between the panels and accordingly has curved edges, and in that the facing sides shift in relation to each other as they articulate around their associated axis of articulation during the transition from the gate-closed state into the gate-open state in such a way that the space remains but decreases along the direction of articulation during at least part of the transition into the state of maximum articulation.

Abstract: Variable electrically motorized drive mechanism for gates or similar structure close-off devices that can be installed for the purpose of an assembly operation that is as heavy-duty as possible and without fine adjustments, for which purpose the gate is provided with controls that essentially comprise a position detector, a memory, and a reference-point indicator, the last of which is positioned between the gate-panel limiting positions and outside of any stop positions or defines a corresponding gate-panel reference-point position and synchronizes the position detector at each stroke such that the path that the panel is to travel along from the reference-point position into a particular desired position is dicated or monitored in accordance with a memory output that corresponds to the adjusted position. The system is accordingly continuously self-monitoring and can synchronize itself when the motor is started up again after a power outage and possibly manual operation of the gate.

Abstract: Sectional overhead garage door for low lintel heights, with the door leaf members of which, except for the one that is uppermost in the closed position, being guided in guide rails having a vertical, an arcuate, and a horizontal section, and with rollers of the uppermost door leaf member being guided in two guide rails, extending with an approximately horizontal section above and in parallel to the approximately horizontal primary guide section provided on the same side, and each of these being connected to an intermediate guide member adapted to be lowered from the horizontal in the direction of the upper frame zone, so that the uppermost door leaf member, when the door leaf is transferred into the closed position, passes into the plane of the closed door leaf along a shorter path than the remaining door leaf members.

Abstract: A method for forming in a single step metal slugs of tantalum, niobium or a base alloy of one of these metals, by cold pressing. A lubricant film is either an oxide coating on the metal, into which a polytetrafluorethylene of low molecular weight is embedded, or it is a film of chlorotrifluorethylene. A metal slug is shaped by means of a hard-metal punch with a crowned bottom surface on its punch head and a rounded undercut in the area of the transition from the punch head to the punch shank.

Abstract: A method is described for the production of a ductile tantalum stock material for high-speed deformation use. A bar-shaped body is made from directly reduced tantalum powder of a given purity and is remelted repeatedly as a consumable electrode in an electron beam furnace. The obtained ingot is shaped into a slab which, after being machined to a smooth surface, is further worked to produce the stock material. At least one heat treatment under vacuum is included in the process of making the stock material.

Abstract: An arrangement for converting rotary motion into translational motion in which a motion-transmission device that is movable translationally, is divided into two strings that move longitudinally along their direction of motion. A driving motor provides rotational motion through a rotary drive. The strings are guided transversely and are positioned outside of a guide where they become separated. The strings, on the other hand, become united inside the guide, and this guide prevents the strings from being movable from each other laterally. The strings have teeth on sides facing each other in vicinity of the guide, and these strings have ends secured to an intermediate component in the guide, remote from the rotary drive. The intermediate component is common to both strings, and they become disengaged in vicinity of the intermediate component.

Abstract: A sectional overhead door which, in its longitudinal rims pointing in the direction of movement, is inwardly angled in a C-shape and stabilized at marginal zones, by reinforcing struts extending in the direction of movement of the door, with the reinforcing struts contacting the sheet-metal panel of the door leaf member extending in the plane of the door leaf member, and being in shape-mating connection in their two end zones at the front face C-shaped angled portions extending in parallel to the plane of the door leaf member.

Abstract: A length of section for framing the leaf of a gate or door or other structure that closes off a building and with a panel, preferably a wooden panel, especially for swinging doors with a sectional strut made out of a strip of sheet metal that is shaped in such a way that its two longitudinal borders are joined parallel into a web designed as a mount for the panel and having perforations for the screws that secure the panel extending through both longitudinal borders. To make sure that the screws will fit through all the perforations once the strip has been shaped into a length of section, the perforations in one longitudinal border are larger than the perforations in the other longitudinal border and in the cross-section of each smaller perforation in the web on the sectional strut is in the vicinity of the correspondingly positioned larger perforation.

Abstract: An actuator has a worm gear which drives a pair of flexible parts into a guide where they are united to form a rigid transmission member. The parts have interlocking teeth which cooperate with each other to transmit stresses in compression and tension along the transmission member. Because the parts are flexible in a direction transverse to the direction of the guide, they may be stored in a space-saving manner to the sides of the guide.

Abstract: A sectional strip 5 with an outward-facing outside 10 and an inside 11 for roll-up, fold-up, and similar gates exhibits at its top 6 and bottom 7 a point of articulation 8 that extends over the total width of the gate for pivoting the adjacent upper and lower, identically shaped sectional strip in relation to the plane of the gate, which consists of the sectional strips that are not rolled up, when rolled up onto the armor of rolled-up sectional strips. The point 8 of articulation at top 6 is in the form of at least one perpendicular cylindrical sector 12 with an outward-facing surface 13 and the point 8 of articulation at bottom 7 is in the form of at least one cylindrical sector 14 with an inward-facing surface 15. The surface at top 6 and the surface at bottom 7 have radii 16 and 17 of curvature that are practically equal in length.

Abstract: A door operated drive assembly comprising an electric drive motor mechanically connected to a door pulling device by a transmission in the form of a belt drive or the like, utilizes an extension of a plate that is swingable in response to deviations of application pressure of the drive belt on belt guide pulleys carried thereby to trigger a switching arrangement utilized to trigger stopping or reversal of the drive motor. In order to make actuation of the switching arrangement a function of the degree of pressure applied by the drive belt, the plate is elastically loaded toward a middle position of its range of swingable movement. The elastic loading of the plate in accordance with a first embodiment is by way of two-arm springs positioned at opposite sides thereof, and in a second embodiment is produced by helical springs which act via actuators, on opposite sides of the plate extension.

Abstract: A latch assembly for use in combination with slidable doors is disclosed. A rotatable disk is connected to the door so that the plane of the disk is perpendicular to the door and parallel to the direction of door movement. A lock bolt which projects from the door jam is adapted to engage a slot in the disk as the door closes, causing the disk to rotate. As the disk rotates, it slides with respect to a spring loaded latch bolt until the bolt slides through a second slot in the disk, when the door is fully closed. Efforts to effectuate a forced entry of the door cause the resulting forces to be passed primarily between the disk and the lock bolt, while the latch bolt's primary function is to prevent rotation of the disk. Thus, an attempted forced entry will not cause excessive forces to be placed on the latch bolt. The latch bolt is slidably connected to a conventional manually operated garage door handle assembly including a lock.

Abstract: A hand-held transmitter for the wireless transmitting of signals for operating remote-controlled garage door installations or the like is disclosed. The transmitter comprises a signal generating device, an energy source, and a hand-operable transmitter switch built into the transmitter housing. The transmitter is capable of selectively transmitting at least two different signals and includes a switch which is position-dependent with respect to the force of gravity for selecting one of said at least two different signals to be transmitted.

Abstract: Apparatus is provided for supporting and drivingly opening and closing an overhead single-panel door such as a garage door. The apparatus includes drive rollers protruding from the plane of the door at respective opposite upper corners thereof, which drive rollers are bearingly supported by a plate member attached to the door. These drive rollers are supported from underneath and in driving contact with fixed guide tracks arranged at the building accommodating the door. In order to insure continuous firm driving engagement of the drive rollers with the topside of the guide track, a bearing bracket is rotatably supported at the drive roller axles, which bearing bracket in turn supports a pair of counterpressure rollers engageable directly at the underside of the guide track.