Abstract: A high voltage switch for switching capacitor banks in and out of a circuit. The switch includes two sets of contacts to perform the switching function. An impedance element is connected in parallel with one set of contacts. Upon closing of the switch current is caused to flow through the impedance element and one set of contacts, thereby preventing the switch from functioning as a short circuit. Subsequently, the second set of contacts engages and the switch can function as a short circuit to completely switch a capacitor bank into the circuit.

Abstract: A clock voltage supply for electronic control circuits such as a computer system for generating four clock signals which are synchronous as to frequency and phase. When n=4, the clock signals are generated with the help of four PLL clocks. So that the four clock signals can continue to appear even if one of the four clocks is malfunctioning, the clock signals of the four clocks are supplied to four (3:4) voters from whose outputs the clock signals are then supplied. Since each voter circuit brings about a certain delay time, which significantly limits the frequency of the clock signals, a delay element is connected downstream to each of the voter outputs respectively. The delay time of the respective delay element, plus the delay time of the respective voter connected therewith, is an integral multiple of the period of the intended clock frequency. For PLL control, the output of each delay element gives the nominal phase position and the output of each clock gives the actual phase position.

Abstract: An insulating tie strap for supporting conductor bars in a load center including an insulating support member including a center body portion defining a center axis, and two end portions. Each end portion includes a mounting pad having an opening for accepting a fastener, an elevating member for elevating the center body portion above the mounting pad and an angle member for attaching the mounting pad and the elevating member to the center body portion. The openings are offset from the center axis of the center body portion, the mounting pads are attached to the elevated members, and the elevated members are attached to the angle members and the angle members are attached to the center body portion. The mounting pads are each adapted to mount to a conductor bar such as a neutral conductor bar or a ground conductor bar.

Abstract: A bus bar stab and insulator assembly for a motor controller has a two-piece housing and a three-piece stab finger clip. The housing base has a number of partitions which define pathways for the stab fingers. The housing cover is slidably mateable with the base and has a tab for receiving a self tapping screw. The stab fingers extend from the housing for making contact with bus bars. The stab finger clip has two fingers with interlocking tabs secured together with a screw which also connects one or more connector cables to the clip. The fingers are constructed of copper alloy and do not require the use of springs.

Abstract: This invention relates to a new use of a fused material of copper and chrome as a contact material for use in vacuum contactors. In addition, the invention relates also to the contact material itself and to the method of its fabrication, as well as for special contact arrangements in the vacuum contactors.The invention shows a whole new, unsuspected range of application for the above fused materials. Up to now, contactors normally used material based on tungsten and copper which were first sintered and then immersed. It has now been experimentally shown that fused materials of copper and chrome, particularly after being reshaped, are very well suited as a contact material for vacuum contactors. Furthermore, in contact pieces of said fused material, methods are provided for additional additives to be precisely inserted by localized alloying, diffusion, or related techniques.

Abstract: A compact valve choke that is simple to manufacture, which can, however, ensure the qualities required for all operating modes, namely the needed dielectric strength and freedom from partial discharges between components that are at different voltages. This valve-choke is achieved by having: the choke windings arranged in a supporting frame in a self-supporting manner, in relation to one leg of the choke core; the choke windings potted on all sides, and the potted block supported in the supporting frame by means of fittings; the choke core consists of two generally circular-shaped cores and is secured in the supporting frame; and the choke coil includes two primary windings wound in two layers, with an outer first winding portion and a concentric inner second winding portion as well as, a core-potential center tap roughly in the center of the windings between the first winding portion and the second winding portion.

Abstract: A telephone set housing (1) is disclosed having at least one cradle (2) arranged in a base component of the housing for receiving the handset. In the region of the cradle, a filler body (5) is provided which, for a desk application of the telephone set housing (1), flushes with the cradle (2), whereas, for the use of the telephone set (1) as a wall-mounted set, a projection (1) which is integrally connected to the filler body projects beyond the contours of the cradle (2). The filler body (5) is secured in such manner that the subscriber himself/herself can easily convert the telephone set housing (1) for desk or wall-mounted application. For this purpose, there is provided at least one freely accessible recess (3) in the region of the cradle (2) into which recess the filler body (5) can be inserted by means of a catch connection in two operating positions.

Abstract: Contact materials based on AgSnO.sub.2 and having Bi.sub.2 O.sub.3 and CuO as further metal oxide additives were previously disclosed. In these materials the total content of all metal oxides was supposed to be between 10 and 25% by volume with the SnO.sub.2 share equal to or greater than 70% by volume of the total amount of oxide.According to this invention the quantity of SnO.sub.2 is kept smaller than 70% by volume; specifically at about 65%, but in any case equal to or greater than 50%. The SnO.sub.2 weight content is to be in the 4% to 8% range and the weight percentage ratio of SnO.sub.2 to CuO is to be between 8:1 and 12:1.In the associated production process, either Bi.sub.2 O.sub.3 powder is purposely admixed to an internally oxidized alloy powder (IOAP) in an additional operation, a grain restructuring with locally different Bi.sub.2 O.sub.3 concentrations occurring in the structure after sintering and compacting.

Abstract: A heat dissipating housing (1, 4, 5, 6) with a tub (1, 4) and an outer cover (5, 6) seated on the tub (1, 4)--preferably hermetically tight--for an electronic circuit component (11, 17) which in operation gives off heat to be dissipated such as a light emitting diode (17) and/or a semiconductor driver chip (11) is disclosed. The circuit component (11, 17) is fastened on the bottom (1) of the tub (1, 4). In operation, the heat to be dissipated is to be transferred at least in considerable part via a heat removal body (5, 6) of the housing (1, 4, 5, 6) to an outer surface of the housing, preferably via a heat conducting outer cover (5, 6) serving as the heat removal body (5, 6) to the outer surface air, sweeping the housing.

Abstract: A method and arrangement for the positioning and bonding of a solid body (2), in which one part of the solid body (2) together with the bonding agent (6) is to be attached to a further element (7) and bonded to a base (4) is to be capable of positioning the solid body (2), at the point attained from positioning, with both high precision and high long term stability. The solid body (2) is immersed in the bonding agent (6) and this bonding agent is in turn located in a groove of a further electrically conducting body (7). The further body (7) is heated by current flow to a temperature at which the solid body (2) is movable within the bonding agent. Upon attaining the desired positioning of the solid body (2), the bonding agent is allowed to cool through controlled reduction of the heating current until solidification occurs.

Abstract: An extruded three-phase base pan for a load center has a central rail with a cross-sectional configuration in the form of a modified cross. The upper surface of each arm of the cross curves upward and away from the body of the cross. The bottom surface and top surface of each arm are joined by a U-shaped surface. The bottom of the base pan has ribs with integrally formed grooves.

Abstract: A mechanical interlock is provided for a vacuum contactor assembly to insure that the second contactor cannot close after the first contactor closes. The interlock includes a support bracket, a cover plate and an interlock block which was first and second openings and is positioned between the support bracket and the cover plate. First and second ball bearings are positioned in the openings. The cover plate and interlock block are connected to the support bracket. First and second slide members each have an operating arm and a blocking arm with appropriate openings for cooperating with the ball bearings and interlock block openings. The operating arm of one slide is paired with the blocking arm of the other slide so when one operating arm moves the ball bearing it blocks the other slide from moving thereby preventing one of the vacuum contactors from operating.

Abstract: A three-phase load center which has a base pan including a first and a second bus bar for a first and a second phase. The bus bars are positioned on the top surface of the base pan. A third bar for a third phase is positioned beneath the base pan such that the bus bar is in contact with the bottom surface of the base pan. An insulator is connected to the base pan such that the third bus bar lies between the base pan and the insulator. The base pan and the third bus bar are each provided with ribs and grooves. These ribs and grooves cooperate to form ventilation passageways.

Abstract: For use with overhead axes of a machine tool or the axes which ride astride one another of a robot, the gravitational effect can be eliminated for controlled drives if a control variable which opposes the gravitational effect is inserted into the control loop of the controller. By this arrangement, a wide control range can be achieved for the overall machine tool or system.

Abstract: A load break switch and interlock assembly is housed in a cabinet with a door. The switch assembly is oriented 90.degree. from a normal position along the backwall of the cabinet and is located on a sidewall. The switch handle protrudes through the front of the cabinet. The handle is horizontally oriented to interfere with the door when the switch is closed thereby preventing the door from being opened. When the switch is open, the handle is vertically oriented and does not interfere with the door.

Abstract: A hinge-mounted labeling panel having two final positions for use on plug-in modules in subassemblies of a mechanically modular system. According to the invention, a panel portion of the labeling panel is hinge-mounted on one end to a guide crossbar of the subassembly, such as a card cage, and on the other end is fitted with a lock. The labeling panel thus has a simple design, and also has two flat sides both of which can be used to attach the desired labeling.

Abstract: The overhead contact conductor of an electric railway has sections where one conductor ends and another begins. The ends of two contact conductors are fastened to a section insulator having two insulation strips between which are arranged two arc horns. The insulation strips are constructed of fiber-reinforced plastic. In order to provide increased creep resistance, the lower sides of the insulation strips are positioned above the contact conductor plane and each of the insulation strips is connected with an upright contact bar, the length of which essentially spans the gap between the arc horns. By using spacers, the contact bars are arranged on the insulation strip in such a way that the lower side of the contact bars forms a contact surface for the electric railway current collector, and not the lower side of the insulating strips.