Abstract: A base body with a grip portion at an angle to a contact carrier can be molded in one piece and contacts in the contact passages can be provided in an inactive position until the leads of a conductor are inserted into channels intersecting the contact passages. Then the contacts are pressed into their active positions in which pointed ends of the contacts pierce the insulation of the leads and make electrical contact with the core thereof. The potting mass is filled into the space around the conductor within the sleeve segment of the gripping portion and can extend onto the conductor to form a buckling preventer. The connection is particularly suitable for connection to sensors and the like.

Abstract: A connector has a plastic base part forming a transversely elongated slot open in a longitudinal insertion direction and formed with a plurality of seats spaced along and opening into the slot. Respective contact elements fixed in the seats each have a deflectable contact arm with a contact point exposed in the slot at the respective seat to one side of the slot and a rigid pivot arm to an opposite side of the slot having an outer end spaced longitudinally outward from the respective contact point. A pivotal clamp part having a pusher bar extending along the slot inward of the arm outer ends is pivoted on the arm outer ends between an open position extending upward away from the base part and with the pusher bar spaced widely from the contact points and a closed position closely juxtaposed down on the base part and pressing a cable down on the points for contact of cable conductors therewith.

Abstract: A connector for electrically connecting a wire to a conductive strip on a face of a printed-circuit board has a dielectric housing formed with a cavity, with a slot extending from the cavity and adapted to receive an edge of the circuit board, and with a hole opening outward from the cavity and adapted to receive the wire. A conductive one-piece spring element in the cavity has a front arm extending at an angle at least partially across the slot and a rear arm extending across the hole, formed with an aperture alignable with the hole, and deflectable between a tensioned position with the aperture aligned with the hole and a rest position with the aperture offset from the hole. The wire is engageable through the aperture and hole in the tensioned position. Alternately the rear arm presses the wire directly against the conductive strip of the circuit board engaged in the slot.

Abstract: A low reverberating room for the entire auditory range. In particular, for ow frequency ranges below 100 Hz, in which the walls and ceiling are covered with sound absorbers. The sound absorbers on a surface of about 70-90% of a room, not including the floor, have a depth of <0.5 m preferably <0.3. The sound absorber also has a closed, plane but acoustically permeable surface, are built up of multiple layers. The sound absorbers are about 20-70% in similarity to composite-plate resonators. They are also provided with inside plates, made of metal or heavy foil, which are designed of varying thickness for absorption in various frequency ranges.

Abstract: A connector has a housing formed with a cavity, with a slot extending from the cavity, adapted to receive an edge of a circuit board, and having a width substantially greater than the circuit-board width, and with a hole opening outward from the cavity and adapted to receive the wire. A conductive rocker in the cavity has a front arm extending out of the cavity through the slot, a rear arm in the cavity adjacent the hole, and a central pivot bump between the ends of the rocker. A spring in the cavity engaging the pivot pin presses the rocker laterally across the slot with the rocker front arm bearing on the strip of the board received in the slot and presses the wire received in the hole against the rocker rear arm.

Abstract: There is described an apparatus for bundling a drafted roving (4), comprising a rotating conveying surface (3) provided with air through-holes (6) succeeding each other in direction of rotation (9), and comprising a suction means connected to the conveying surface (3) on the side facing away from the roving (4) in the vicinity of the air through-holes (6), which suction means forms a slot-like suction zone (5) for the roving (4) extending in direction of rotation (9) of the conveying surface (3). To create advantageous constructional conditions, it is proposed that the suction zone (5) should have at least one suction slot tapering in direction of rotation (9) of the conveying surface (3) from at least two rows of holes to one row of holes.

Abstract: The invention concerns a plate resonator for absorbing sound and including a thin front plate with high elasticity and low internal friction, e.g., made of metal; a back plate which likewise has high elasticity but which has high internal friction; an all-over solid connection between the front and back plates in the form of a bonded connection (e.g. double-sided adhesive tape); and a border which is closed all around by the back plate but does not prevent sound entering the back plate from the side.

Abstract: An electrical connector assembly has a rigid body having an outwardly directed face and formed with a plurality of pockets opening at the face, respective electrical contacts fixed in the pockets of the body, and a cover formed of a flexible elastomeric plastic completely surrounding the body except at the pockets. This cover is formed unitarily with an annular skirt projecting outward past the face and with a web bridging the skirt except at the pockets and lying against the face of the body.

Abstract: A foil sound absorber consists of at least two smooth, flat and air-tight foils separated from each other and from a reverberant rear wall R by different distances D.

Abstract: A false ceiling for buildings designed to absorb acoustic waves has perfoed plates. One or several suspended plates (1, 6) are provided which are so hard that they cannot vibrate. The plates have a plurality of regularly or irregularly arranged holes (4, 7) with 0.2-3 mm diameter, the surface of the holes being less than 4% of the total surface. The air in the holes (4, 7) forms with the overlying cavities (11) a dampening active mass system of the foil absorber type.

Abstract: A method for manufacturing filler materials for minerally bonded structural elements with thermal treatment of the starting materials to be used as filler materials involves subjecting comminuted high-polymer materials comprised of natural or synthetic origin materials to a shock-like heat radiation treatment by passing the materials under an irradiation unit to provide a temperature gradient of at least 20K per mm of travel distance of the materials beneath the irradiation unit in which an iron temperature of more than 600.degree. C. can be measured whereby the materials are inertized and are activated by heat in the range of a molar energy of 60 to 170 kJ*mol.sup.-1 and then placing the resulting activated materials in a crystal-forming solution of inorganic substances that enter into a permanently adhesive bond with a basic matrix of a composite material to be formed therefrom.

Abstract: A sound absorbing glass building component or transparent synthetic glass building component is provided with holes penetrating through it and is disposed at a distance from a surface, such as a wall, ceiling, window or door. The glass building component is formed as a panel having microperforated holes having a diameter of 0.1-2.0 mm, the holes being spaced 2-20 mm apart and the panel having a thickness of 0.2-30 mm.

Abstract: An electrical connector assembly has a threaded part having a conductor, an unthreaded part having a conductor, fittable along an axis with the threaded part for engagement of the conductors with each other, and formed with front and back axially spaced stops, and an internally threaded nut axially displaceable on the unthreaded part between the stops through a predetermined axial distance, rotatable about the axis on the unthreaded part, and threadedly engageable with the threaded part to lock the parts axially together with the nut engaging the front stop. The nut is formed with at least one axially extending and radially projecting tooth, the unthreaded part is formed with at least one axially extending and radially projecting tooth, and the teeth are so positioned that they come into engagement with each other only during a small fraction of the displacement of the nut on the unthreaded part immediately prior to engagement with the front stop.

Abstract: An axial fan has an impeller provided with vanes and mounted in a flow duct. In or on the wall of the duct at least one port is arranged adjacent to the vane tips. The duct side the port is provided with a covering means having passages therethrough.

Abstract: A plug-in proximity switch has a tubular housing having a hollow interior and an open end, a circuit board in the housing interior having an edge adjacent the end and a face provided adjacent the edge with a plurality of circuit paths, a socket fittable with the open housing end, a socket body in the socket adjacent the board edge, and a plurality of connector elements fixed in and projecting inward from the body and directly engaging the circuit paths of the board. The board is rigidly held in the housing by a mass of hard potting compound filling the housing interior around the board at least at the edge thereof.

Abstract: A plug member for a connector of the type in which the plug member is inserted into a coupler at an angle and then swung into its end position, has a sleeve portion guiding the cable as it is inserted so that the conductors of the cable pass into channels of a portion of the plug formed with windows through which the conductors are exposed and can be engaged by contacts of the coupler passing into these windows.

Abstract: Apparatus for making a yarn comprises two juxtaposed, closely spaced apart twisting drums (1), which are adapted to be driven in the same sense, and an inclined fiber-guiding duct (4), which succeeds fiber-opening means (3) and protrudes into the generally triangular twisting space (2) between the two twisting drums (1) and serves to supply singled fibers in an entraining air stream to the generally triangular twisting space (2).In order to ensure a supply of properly oriented and uniformly distributed fibers into the generally triangular twisting space (2), the length (L) of the shortest boundary wall (5) of the fiber-guiding duct (4), which wall faces the generally triangular twisting space (2), is at least as large as the average length of the longest fibers to be processed in the apparatus, the ratio of the length (1) to the width (b) of the flow area is between 10:1 and 2:1, and the entraining air stream has a mean velocity of flow corresponding to a Reynolds number of 5,000 to 50,000.

Abstract: Apparatus for making a yarn comprises two juxtaposed, closely spaced apart twisting drums, which rotate in the same sense about parallel axes and at least one of which has a suction zone, which faces the generally triangular twisting space defined by said twisting drums between them. A fiber-guiding passage extends into said generally triangular twisting space at an oblique angle to the axes of said twisting drums and has an outlet opening, which extends along said axes and serves to supply fibers which are to be twisted together to form a yarn. In order to increase the strength of the yarn, each suction zone is enlarged in width adjacent to one end of the outlet opening of the fiber-guiding passage.

Abstract: An electrical terminal strip comprises an insulating body having a plurality of connector compartments, a corresponding number of clamp members constructed as compartment liners each having a clamp passage in which an electrical conductor is insertable and a threaded hole for receiving a clamp screw. Each of the clamp members is provided with a clamp bracket having both a conductor engaging element and at least one solder connector pin. The clamp member is insertable through its solder connector end into the connector compartments of the insulating body where it is held undetachably, while the clamp bracket is subsequently inserted through a lateral opening in the insulating body in a direction opposite to the direction the conductor is inserted so that the conductor engaging element is in the clamp space. No other components or assembly steps are required to unite the conductor clamp member and clamp bracket in the insulating body, but a base plate may or may not be a part of the electrical strip.

Abstract: Apparatus for making a yarn comprises two juxtaposed, closely spaced apart suction drums, which rotate in the same sense, and a fiber-guiding duct, which protrudes into the triangular space between the suction drums and serves to supply single fibers. In order to ensure a uniform tying of the single fibers into the yarn as it is formed, the length of the outlet opening of the fiber-guiding duct exceeds the average length of the longest fibers to be processed. Besides, the distance from the outlet opening of the fiber-guiding duct to the common diametral plane of the suction drums is such that the arc length of the periphery of each suction drum from the point which is nearest to said outlet opening to said common diametral plane is not in excess of 0.5 radians.