Abstract: A Bulk Current Injection (BCI) transformer is provided herein with a magnetic core and a plurality of windings. The magnetic core is configured for encircling one or more electrical conductors under test. Each of the plurality of windings are wrapped, at least in part, around a longitudinal dimension of the magnetic core and spaced apart around an azimuthal dimension of the magnetic core. During injection tests, a power source may be coupled for supplying current to each of the windings at a respective “feed point.” Arranging multiple feed points around the magnetic core enables current flow through the windings to generate an azimuthally-uniform magnetic flux density in the magnetic core. The uniform magnetic flux density enables the BCI transformer to excite only common mode currents in the electrical conductors under test. BCI test methods, including injection tests and current sensing tests are also provided herein, along with a test setup for characterizing BCI transformers.

Abstract: A Bulk Current Injection (BCI) transformer is provided herein with a magnetic core and a plurality of windings. The magnetic core is configured for encircling one or more electrical conductors under test. Each of the plurality of windings are wrapped, at least in part, around a longitudinal dimension of the magnetic core and spaced apart around an azimuthal dimension of the magnetic core. During injection tests, a power source may be coupled for supplying current to each of the windings at a respective “feed point.” Arranging multiple feed points around the magnetic core enables current flow through the windings to generate an azimuthally-uniform magnetic flux density in the magnetic core. The uniform magnetic flux density enables the BCI transformer to excite only common mode currents in the electrical conductors under test. BCI test methods, including injection tests and current sensing tests are also provided herein, along with a test setup for characterizing BCI transformers.

Abstract: Copolymers containing residues of at least one olefinic monomer and a method of making such copolymers including the steps of: (a) providing a pressurized stirred tank; (b) feeding monomer compositions to one or more stirred tank reactors, where at least one monomer composition includes one or more monomers according to structure (I): where R1 is linear or branched C1 to C4 alkyl and R2 is selected from methyl, linear, cyclic or branched C1 to C20 alkyl, alkenyl, aryl, alkaryl and aralkyl; (c) feeding an initiator composition to the STR; (d) maintaining in the STR hydraulically full; (e) maintaining the monomer compositions in (b) and the initiator compositions in (c) in the STR for a residence time sufficient to effect conversion of the monomers to a copolymer composition; and (f) discharging the copolymer composition.

Abstract: As provided herein, a dual- or quad-ridged broadband horn antenna may include a pair of conductive antenna elements arranged opposite one another for guiding an electromagnetic wave in a longitudinal direction through the horn antenna. In some cases, the pair of conductive antenna elements may include substantially convex inner surfaces and appropriately shaped outer surfaces. The convex inner surfaces may generally function to direct or guide the radiated energy without disturbing the intended radiation pattern. To maintain the intended radiation pattern, the broadband horn antenna may also include a pair of tapered extension elements, each coupled to an outer surface of a different one of the antenna elements at one end thereof. In some cases, a magnetic material may be arranged upon at least a portion of the antenna elements to restrict surface currents to flowing along the inner surfaces only.

Abstract: An end office of a telephone system in which the end office is operated based on a zero loss plan which requires that the line side equipment be exclusive of any means for introducing loss into the receive paths established in the line side equipment for the subscriber locations served by the end office switch.

Abstract: A support assembly, for an equalizer bar, integrally welded to a main frame of a track-type front loader vehicle. The assembly includes a first central U-shaped plate having a base and first and second legs extending forwardly from the base, a second L-shaped plate having a third leg welded to one side of the base and a fourth leg extending forwardly from the third leg, a third L-shaped plate having a fifth leg welded to the other side of the base and a sixth leg extending forwardly from the fifth leg, a fourth plate welded to the front of the first, the second, the fourth and the sixth legs, a fifth L-shaped plate having a seventh leg welded to the top of the first, the second, the third and the fourth plates, and an eighth leg extending downwardly from the seventh leg and spaced from the base, and a pivot pin coupled to the first, fourth and fifth plates through bosses for holding the equalizer bar in the space between the eighth leg and the base.

Abstract: an integral welded main frame for a loader vehicle having a hydrostatic drive system, including a front frame section for supporting a load forwardly thereof, a pair of rails extending rearwardly from the front frame section, each of the rails including an upper plate and a lower plate joined by an outer plate and an inner plate to form a box section, the inner plate having an opening for receiving a hydraulic motor of the system, a first casing for a final drive of the system, including a first curved plate surrounding the final drive and the opening and extending from the inner plate to outside the outer plate, whereby each rail is reinforced in the area of the opening, a second casing for a pivot bar extendable through one of the rails, including a second curved plate welded to the outer plate and extending outside thereof, whereby each of the rails is reinforced in the area of the pivot bar, and a plurality of cross-members connecting the pair of side rails.