Abstract: A pad for supporting a transformer upon the earth's surface having an improved safety feature, the pad being formed of rigid material configured to rest upon the earth's surface and support a transformer and transformer housing on the upper surface thereof, the pad having a cable opening communicating between the top and bottom surfaces, and a hollow sleeve of rigid material, the sleeve being received in the pad cable opening and arranged such that the upper end of the sleeve extends above the pad top surface, the sleeve preventing objects inserted between the housing and the pad from engaging cables passing through the cable opening.

Abstract: A terminal housing having integral coil supporting means for a toroidal coil comprises a coil support portion having a coil locating post extending therefrom which is received in the center opening of the coil. The housing is integral with a deformable housing support arm which is spaced from and extends parallel to the locating post. The housing has terminal-receiving cavities therein which receive the terminals that connect the coil wires to the insulated wires extending from a cable. After these connections are made, the housing is moved against one side of the coil and is latched to the upper end of the locating post by integral latching means so that it extends across the coil. The housing and the lower end of the locating post have additional latching means so that a coil having a support and housing thereon can be stacked against identical coils and housings, and latched to the adjacent coils.

Abstract: A transformer having a core and coil assembly which includes a pair of cores disposed side by side, the core members being of the squared "O" type formed of a plurality of nested, generally rectangular laminations. A space is provided between a pair of adjacent laminations in corresponding locations in each core, and a coil surrounds the adjacent sides of the respective cores through the central openings of the cores. Also included is a terminal board support having a pair of tabs to be inserted in the spaces between the adjacent laminations, the tabs being provided with holes having extruded edges for frictional engagement with the core laminations. The core and coil assembly is placed upon a flat base member and a U-shaped band is placed so as generally to encompass the top and two sides of the core and coil structure to make contact with a part of up-turned flanges of the base member.

Abstract: Electrical apparatus includes electrical coil means formed of multiple turns of enamel-covered electrical wire axially mounted on a core of magnetic material in electromagnetic energy coupling relationship therewith, and a relatively flat flexible electrical cable containing a plurality of spaced parallel conductors extending between the cable ends contains a loop shaped portion extending about an axis of said core over an arcuate distance greater than 180 degrees.

Abstract: A coil form or body for coils is disclosed particularly for use in printed circuits. The coil form has a flange provided with insertable perforations in order to accommodate one-piece soldering lugs having soldering lug legs aligned at a right angle relative to one another in order to solder the coil wires and particularly for soldering into the printed circuit. The soldering lugs are equipped with at least one clamping element which abuts against the surface of the coil member flange when the soldering lug is pushed in and secures the coil form from shifting. The perforations are designed at a right angle and at least one latch is arranged on at least one soldering lug leg. This latch abuts against the exterior side of the flange when the soldering lug is inserted into the perforation.

Abstract: An external core member is mounted on a dielectric substrate. The external core member is made of a magnetic material and is formed with a through bore. A coil member is disposed on the substrate and within the through bore. An elastic material casting is formed in the through bore and about the coil member, and having a core receiving bore formed therein. The core receiving bore is arranged coaxially with the longitudinal axis of the coil member so as to extend through the coil member at its center portion. A movable core of a magnetic material is movably retained in the core receiving bore.

Abstract: A transformer unit comprising a transformer, a ground level base pad having a vertical cable opening therethrough, and an open top, open bottom vertical cable vault situated in the earth, the upper end thereof being received in the pad opening to provide easy access to and training room for underground electrical cables connected to the transformer.

Abstract: The field shell of an electromagnet is formed with angularly spaced flanges which define a magnetic pole and which also serve as a mounting hub for a coil assembly consisting of a bobbin and a multiple turn winding. Resilient fingers on the bobbin snap into openings in the flanges to hold the bobbin and the shell in assembled relationship. Tabs are located between and project inwardly from the flanges and are used to mount the shell in a fixed position.

Abstract: A shield for protecting transformer wire has a cap which fits over and locates the shield relative to the transformer laminations, a side wall to protectively cover transformer wire wound on a bobbin and an integral flange to protectively cover transformer input and output wire. A deflectable locking piece integral with the side wall is locatable under a flange of the bobbin to lock the shield in place.

Abstract: An inductor such as a fluorescent lamp choke comprises a bobbin carrying a winding, a laminated core, and a sheet metal casing consisting of two parts which have interengaging flanges and grooves along four parallel edges which are slid together and subsequently bent over and pressed against end faces of the core to secure the parts of the casing together so that they exert pressure on the core from all sides.

Abstract: An electrical coil having a protective cap, a round ferrite core, an electrical winding and connective elements, which in assembly is suitable for installation in enveloped layer circuits, is comprised of a round core which is positioned, in one piece, on a ferrite base plate, a protective cap is secured onto the ferrite base plate and a winding is positioned about the core and has wire ends which are brought into contact, within the interior of the protective cap, with the connective elements which have a portion thereof arranged on the base plate surface facing away from the core and outside the interior of the protective cap.

Abstract: The invention concerns an eddy-current retarder whose stator comprises a ring of electro-magnets mounted on a transverse common support 4, each electro-magnet comprising a core surrounded by a coil of wire 2. Each coil 2 is entirely enveloped in a case of hard insulating material moulded thereon and this case is wedged angularly on support 4 by cooperation of bosses 7 moulded therewith and notches 6 or other depressions hollowed out in support 4.

Abstract: Especially simple structure for an electrical transformer device provides cost effective fabrication thereof and offers improved operating performance particularly in a radio transmitter circuit for coupling high levels of radio frequency energy from the output of a radio frequency amplifier to an antenna system. One winding of the transformer is formed from a single, unitary, tubular member arranged into a U-shaped configuration which includes a pair of spaced sets of openings therein for the two-fold purpose of allowing efficient threading of a secondary winding therewithin and to improve air cooling characteristics of the device. A second winding comprises a wire passed through the interior of the tubular member, and a number of cylindrically shaped magnetic elements are sleeved over the tubular member to enhance the mutual inductive coupling between the windings.

Abstract: Disclosed is a device and method for attaching a lamp ballast to a mounting plate in a luminaire. The attachment device comprises an essentially closed eyelet at one end thereof and a straight shank at the other end thereof. The shank is insertable into a bore drilled transversely through the ballast by the ballast manufacturer for receiving conventional ballast mounting bolts. The eyelet end of the instant device receives a fastening member which is fixedly attachable to the mounting plate through mounting holes. In accordance with one aspect of this invention, pairs of such devices are mounted in opposition with their shanks inserted coaxially into opposite ends of the ballast bore to effect the attachment. The method of this invention involves forming a matrix of prelocated mounting holes for the devices to allow the attachment of different sized ballasts to the mounting plate.

Abstract: A transformer for coupling between relatively moving elements having a limited degree of motion without inducing torques or forces between the elements as the result of fluxes coupling transformer windings. The transformer includes a primary and secondary coil respectively secured to the relatively moving elements and housed within a core structure of high permeability material which provides a low reluctance flux path for the mutual or coupling flux between the transformer primary and secondary windings and a relatively high reluctance path for leakage flux.

Abstract: A ceramic substrate is provided with a plurality of planar conductors formed on a surface of the substrate; conductors extend substantially radially from an imaginary point on the surface of the substrate. A layer of dielectric material is formed over the major portion of each of the conductors to form a ring of dielectric material to which a ferrite toroidal core is adhesively secured. The core is precoated with an insulating material prior to adhesively being secured to the dielectric ring. A plurality of wire conductors are wire bonded at each end thereof to the exposed ends of the metal conductors on the substrate.

Abstract: A transformer mounting assembly is disclosed for mounting a plurality of current transformers on a wire. A pair of parallel mounting plates are positioned normal to one another with one of the mounting plates having first and second current transformers mounted on the same side of the mounting plate at the opposite end portions and the engaging mid portions of the mounting plates having a third current transformer mounted thereat with the third current transformer being at the other side of the mounting plate from that of the first and second current transformers. The opposite end portions of the other mounting plate have clamps mounted thereon with the clamps being contoured to releasably clamp the assembly to a neutral wire with the other mounting plate extending along the wire.

Abstract: A ballast can be mechanically and thermally isolated from the mounting plate which acts as a heat sink by securing a pair of L-shaped channels to the bottom of the ballast with the depending leg of each channel being disposed in intimate sliding engagement with the flat surface of a respective C-shaped channel member which is secured to the mounting plate. Vibration damping washers are disposed between the L-shaped channel member and the C-shaped channel member to prevent vibrations from being transmitted from the ballast to the base while still permitting heat dissipation through the superimposed sliding surfaces of the channels.

Abstract: A miniature inductor comprising a sheet metal frame having a slot that divides the frame into two separated halves, each half having a pair of upstanding tabs and a pair of inclined tapered flanges. A plate of insulating material extends across the slot and is held in position by the tabs, while a bobbin lies on the insulator and has its ends attached to the flanges. A mass of plastic encapsulates all of the components except for the bottom surfaces of the frame halves which serve as terminals.

Abstract: An electrical component such as a base loading coil assembly for a fixed length mobile radio antenna is disclosed featuring an electrical coil having a series of windings and an adjustable shorting screw disposed in line with the longitudinal axis of the coil and being rotatable on at least a portion of the windings so as to translate along the longitudinal axis of the coil to vary the inductance thereof.

Abstract: A lightweight plastic transformer pad having upper and lower load bearing walls which are separated by a structurally integrated matrix of transverse support walls extending upwardly from the periphery of an array of apertures in the lower load bearing wall.

Abstract: The combination of a plurality of tubular transducer sections, and a flexible supporting member extending through the tubular transducer sections forms a flexible elongated probe of a design suitable for monitoring the level of an element, such as a nuclear magnetically permeable control rod or liquid.

Abstract: A transformer pad having a fiberglass reinforced plastic exterior surface and an expanded foam core.

Abstract: An improved mounting is provided for a residential transformer in which structural support for the load created by the weight of the transformer is provided by a wood and foam core enclosed within a plastic shell. Structural rigidity is provided by lateral and transverse cross braces connected to form a wooden framework. An aperture is formed through the structure and support blocks are provided at the interior boundary of the aperture and fasteners extend through the shell and through the support blocks of the framework to secure the shell to the framework. Reinforcing blocks are provided at the corners of the underside of the structure to prevent damage to the mounting whenever it is necessary to re-align or manipulate the mounting.

Abstract: A rectangular loading coil case has front, back, side and end panels, with cable entry and exit provided in one end panel, and with a support structure attached to, for example, the front panel and comprising rods extending across the case with a series of beams extending in opposed pairs and supported on the rods by spacer members positioned on the rods. Assembled magazines of loading coils are supported on the beams, each magazine supported at one end by one of a pair of beams and supported at the other end by the other of the pair of beams. A plurality of magazines are carried by each pair of beams, to form a layer. The number of layers can vary.

Abstract: Loading coils for communications cables are preloaded into magazines and prewired to terminal strips carried on the magazines. A magazine comprises a length of material, typically extruded or molded plastic material, of a channel shaped cross-section to accommodate the coils flat and side-by-side. End caps fit on each end of the magazine to retain the coils in position and also serve as mounting means in a casing. The terminal strips are mounted on an extension of one wall of the channel shaped cross-section. The preassembled magazines are then assembled in the casing a higher packing density is obtained, and the prewiring of the coils to the terminal strips provides effective orientation of the coils relative to each other to give good electrical and electronic separation and reduced cross-talk.

Abstract: For use in the deflection circuitry of a cathode ray tube, such as with a television receiver picture tube, a single pincushion correction transformer providing both vertical and horizontal correction. The transformer includes an E core having a control winding provided around the central leg, a horizontal correction winding provided on one outer leg and a pair of phase opposed windings on the other leg to minimize cross modulation and sensitivity to stray magnetic fields.

Abstract: A load coil assembly housing for use with multiconductor cable containing a plurality of associated pairs of electrical conductors has connector terminals located along the periphery of the region in which load coils are located. That makes the otherwise conventional housing suitable for use with mass application tooling. Cable wires and load coil or component leads may be respectively attached by solderless and solder techniques to one terminal.

Abstract: A magnetic locator in which flux-gate sensors are mounted in longitudinal notches or grooves at the ends of a tubular support to form an assembly which is inserted into a tubular housing, the sensors being press-fitted into the notches and the tubular support being provided with spaced bushings of material which are compressed when inserted into the housing. A stiff hairpin excitation conductor extends through the sensors and through the tubular support, being preassembled with one of the sensors. A simplified electrical circuit is employed which produces a beat frequency signal when a magnetic object is located and which avoids the need for a voltage to frequency converter.

Abstract: A cable end connection to a loading coil case has a lead sleeve crimped over the cable end, with a layer of sealing compound between the lead sleeve and the outer protective sheathing of the cable. The metal sheath of the cable is exposed at the cable end by removal of the protective sheathing for a short distance and the end of the lead sleeve is soldered to the metal sheathing. A tube extending from the end of the loading coil case is a close fit over the lead sheath, the outer end of the tube soldered to the lead sheath.

Abstract: A loading coil assembly comprises a casing having discs at each end. At the inlet end a support disc is mounted on and spaced from the end disc and a plurality of assembled magazines holding loading coils is attached at one end of each magazine to the periphery of the support disc. A similar support disc interconnects the other ends of the magazines, the magazines extending in a circle about the casing axis. Further circles of magazines can be added by providing one or more annular rings attached to the end disc carrying the support disc, for attachment of the magazines at one end, and also interconnecting the other ends of the additional circles of magazines by annular rings. The conductors can be fed along spaces between adjacent magazines. The casings vary in size according to the number of circles of magazines.

Abstract: A ground level transformer unit including a transformer and a pallet-pad, the pad being formed from a lightweight material and having on one side supporting surfaces of sufficient strength to form a pad mount base for the transformer and a surface for transporting the transformer unit by a fork lift truck and on the other side a number of latching points for accommodating a number of different size transformers, and a tamper proof ridge positioned to correspond to the dimensions of the various size transformers. The pad is permanently attached to the transformer for installation on site. The transformer units can be stacked for storage and shipped as a unit.