Abstract: A circuit breaker system having load and line terminals interconnectable with load and line conductors by way of a solderless collar has a central opening which encloses an overlapping portion of the internal load or line terminals and the associated load or line conductors. The collar has a set screw in the top thereof which is turned down on the overlapping terminal and conductor until a secure connection is made. The collar has a joint, which may be affected by the setscrew action associated with securing the external conductor with the internal terminal. The joint is T-shaped and is provided with vertical tabs on one portion thereof to prevent the weakest portion of the joint from rotating outwardly under the affects of the securing action and thus jeopardizing the strength of the joint.

Abstract: A tube conductor, for example made in copper, is interconnected to a connector housing, for example made of aluminum alloy, by stuffing an insert, for example a steel ball, into the tube. The steel ball expands the tube and clamps it in the cavity of the housing. This construction enables elastic energy to be stored that increases the reliability and lifetime operation of the connector. It also enables a copper conductor to be reliably connected to aluminum connector, even though their thermal expansion coefficients differ, by suitable choice of material and dimensioning of the insert.

Abstract: An electrical terminal connector comprising a connector body and a set screw. The connector body has a block section with a conductor receiving passageway. The set screw is connected to the block section to intersect the conductor receiving passageway. The block section further defines a porthole extending therethrough. The porthole intersects the conductor receiving passageway forming a lower recess therein. When a conductor is inserted into the conductor receiving passageway, the recess receives a portion of the conductor which is clamped down upon by the set screw.

Abstract: An electric power connection system for a hermetically sealed electric motor having a plurality of electric power terminals substantially encapsulated in an electrically insulative block with the terminals protruding about 3/8 inch from a surface of the block. A generally cylindrical tube of electrically conductive metallic material has at least one end with an inner diameter sized to admit one of the terminals in general sliding engagement with the tube. The tube further has a threaded aperture extending through a sidewall adjacent the at least one end with a set screw threadedly inserted in the threaded aperture and adapted for compressive engagement with the terminal for establishing retention and electrical continuity between the terminal and the tube. An electrical lead is connected to an end of the tube opposite the at least one end for coupling power to the terminal. Preferably, the lead is attached to the tube by crimping of the tube onto the lead.

Abstract: A watthour meter socket adapter 310 includes a plurality of current jaw contacts 290 and potential jaw contacts 10 mounted between front and rear housings 314, 312, with each jaw contact 290, 10 surrounding by a receptacle 422, 70 in the front housing 314. An aperture in each receptacle 422, 70 allows insertion of a meter blade terminal into the jaw contact. An electrical conductor extends from each jaw contact 290, 10 to an individual terminal 102 mounted in a terminal portion of the front and rear housings 314, 312. Apertures in the front housing 314 allow insertion of a tool into engagement with a fastener 112 carried on each terminal 290, 10 for fixedly joining a terminal clip 116 mounted a conductor 132 extending from the jaw contacts to an external conductor 138 inserted through openings in the bottom of the front and rear housings.

Abstract: An electrical connector for establishing an electrical connection to an electrical conductor. The connector includes a connector body with a cylindrical hull or recess for receiving the electrical conductor with an insulating layer. A contact screw is positioned in the connector body and the contact screw includes an end portion for displacing or piercing the insulating layer of the insulated conductor.

Abstract: There is provided a spark plug connector for connection to a spark plug having an elongated terminal with a grooved portion, comprising: a body having a longitudinal axis and an internal bore extending along the axis; a means for fixedly positioning a wire within the body closely adjacent to the bore; a locking member reciprocably mounted to the body so as to be selectively movable between a first position and a second position, wherein in the first position the terminal can be inserted into the bore to contact the wire and in the second position the locking member engages the grooved portion of the terminal to lock the terminal in position with respect to the wire and body.

Abstract: An electrical box wiring termination lug to ease installation of thick wires into tight areas within these boxes. An elbow lug similar in appearance and function to a plumbing elbow.

Abstract: A conductor is formed from a single unitary sheet of metal and is bent so as to form a body portion and two overlapped flange sections. The flange section which is immediately adjacent the contact surface to which the conductor is connected may include at least one surface scratching projection which extends outwardly beyond the undersurface of that flange section to scratch and make electrical contact with the contact surface to permit electric flow between the conductor and the contact surface.

Abstract: A slip-fit electrical connector for a threaded transformer stud has a stepped or key type stud hole which includes an oversize unthreaded circular hole on top and a slightly smaller intersecting hole on the bottom. The bottom hole has threads matching those of the stud and a jam screw forces the threaded stud into intimate contact with the threads of the smaller hole, such contact extending over a substantial arc. The connection provides a tight and improved electrical connection having simplicity of installation.

Abstract: An electric power connection system for a hermetically sealed electric motor having a plurality of electric power terminals substantially encapsulated in an electrically insulative block with the terminals protruding about 3/8 inch from a surface of the block. A generally cylindrical tube of electrically conductive metallic material has at least one end with an inner diameter sized to admit one of the terminals in general sliding engagement with the tube. The tube further has a threaded aperture extending through a sidewall adjacent the at least one end with a set screw threadedly inserted in the threaded aperture and adapted for compressive engagement with the terminal for establishing retention and electrical continuity between the terminal and the tube. An electrical lead is connected to an end of the tube opposite the at least one and for coupling power to the terminal. Preferably, the lead is attached to the tube by crimping of the tube onto the lead.

Abstract: This invention relates to a junction connector for permanently connecting electric cables, wherein its sleeve comprises a bore passing longitudinally therethrough, a part of the wall of this bore, extending over an angle at the center greater than 180.degree., being provided with longitudinal ribs projecting radially towards the center; aligned tapped holes, made from the outside, open out in the bore opposite the central generatrix of its ribbed part; and locking bolts whose end is in the form of a spherical cap and incorporating a cleavable head, are screwed in the tapped holes to assemble the cables sleeve.

Abstract: The present invention provides a connector bar for making electrical connections to terminals having a lug body with an externally accessible interior cavity and a binding screw. The connector bar includes an elongated body having two ends and made of electrically conductive material. At least one of the ends having a solid cross-section with a configuration which creates less distortion in the sides of the lug body compared to a round cross-section configuration when the binding screw contacts the end with torque applied for making the pre-determined mechanical and electrical connection. Preferably, the cross-section configuration of the end is defined by a flat top surface larger in width than the contact area of the binding screw, two arcuate sides having an arc value approximately the same as the interior cavity of the lug body, and a flat bottom surface smaller in width than the top surface.

Abstract: Line power voltage is taken from a cable system tap module by a device having a housing, first and second electrical insulators coaxially positioned within first and second cavities in the housing, a contact tip member positioned in the first insulator and having a tip end portion extending through an opening in an end of the housing, and a hollow screw employed as a seizure screw in the tap module. The hollow screw has a hollow with a contact socket positioned therein for resiliently receiving the tip end portion of the contact tip member so as to provide a longitudinally sliding electrical connection between the contact tip member and the hollow screw. An inductance coil is positioned within an axial bore of the second insulator. The external dimensions of the first and second insulators correspond to the dimensions of the first and second cavities so that the inductance coil and the contact tip member are accurately positioned within the housing.

Abstract: A terminal connection for a flat stab of an electrical switch includes a spring clip which retains a nut in alignment with an aperture in the flat stab. The spring clip is fabricated from a strip of resilient electrically conductive material and has a top wall with a central aperture, side walls extending downward from the top wall and having slots therein, an end wall extending downward from the top wall and a bottom wall cantilevered forward from the bottom of the end wall under the top wall and between the side walls. A square nut is retained in the spring clip with its tapped hole aligned with the aperture in the top wall and with either an aperture or a depression in the bottom wall. The fastener assembly clips onto the end of the flat stab with the stab between the nut and the top wall of the spring clip. A screw passed through the apertures in the top wall and the flat stab engages the nut to secure a conductor to the stab.

Abstract: An electrical connector for connecting first and second conductors of a cable to first and second electrically conductive leads comprising first and second connector members with each of the connector members including a connector body and first and second conductive members carried by the connector body. Each of the conductive members has a terminal. The conductive members of the first connector member are coupled to the first and second leads, respectively and the conductive members of the second connector member can be coupled to the conductors of the cable, respectively. A flexible, elastic inner sleeve snugly receives a proximal region of the connector body of the second connector member and a distal region of the cable. A flexible outer sleeve, which is less flexible than the inner sleeve, snugly receives the inner sleeve. The connector bodies have a projection and recess so that they can be interconnected to place the terminals in electrical contact.

Abstract: A turn prevention electrical connection assembly to prevent cable or other conductor connection lugs from turning on an electrical bus includes a turn prevention member, usually of cross-like configuration and having at least as many arms as there are connection lugs on one side of the bus. The turn prevention member is mounted on the bus in nested alignment with the connection lugs so that each connection lug is aligned closely adjacent to at least one arm of the turn prevention member. The turn prevention member and the connection lugs interact with each other to preclude turning of the lugs from their preset alignment.

Abstract: A conductor terminal clamp using a screw to maintain in tight overlapping relation an electric cable and the flat conductor end. The clamp collar is constructed without the use of welds and is provided with a pair of opposing movable finger members. The terminal end is disposed within the collar between the movable finger members which apply a gripping force transversely upon the terminal end as the screw applies the clamping force perpendicularly upon the overlapping collar and conductor end.

Abstract: In an electrical transition a nonconductive base has at least one side rail and at least one interior rail spaced apart from a side rail and a wire connector fitted therebetween. The side rail and interior rail prevent the connector from moving across the base. A bus bar is placed on the base and has a tab extending into the opening of the connector.

Abstract: A compact molded case circuit breaker with increased ampere rating employs a latch assembly for maintaining the circuit breaker operating mechanism in a closed condition against a pair of powerful operating springs. To increase the mechanical advantage required to move the operating handle against the springs, a retractable handle extender is attached to the handle. For higher-rated circuit applications, a lug cover extension is added to the line end of the breaker to assist in extinguishing the intense arc that occurs during circuit interruption and to protect the line lugs from inter-phasal circuit faults. A visual access slot is arranged next to the circuit breaker handle to ascertain and verify the condition of the circuit breaker contacts. The line and load terminal straps are slotted to receive protrusions on the bottom of the line and load terminal lugs and provide anti-turn facility to the line and load terminal lugs under short circuit overcurrent conditions.

Abstract: An industrial-rated circuit breaker line and load terminal lug and connector for connection with the power distribution line and load cables also includes a receptacle that allows connection with an auxiliary device for load indication and voltage metering. The receptacle is in the form of an insulative sleeve arranged around a metal contact blade in electric circuit with the line and load lugs. Electrical connection with the line and load cables and the auxiliary device occurs when the combined terminal lug and connectors are connected with the power distribution line and load cables.

Abstract: A method of fabricating a lead terminal device having a body formed of an electrically conductive sheet material. One leg of a pair of legs on the body is deformed into a generally closed loop, and opposite end sections of the one leg are arranged in overlaying engagement with each other. A flange on one of the opposite end sections of the one leg is inserted into a slot in the one leg spaced adjacent the other of the opposite end sections thereof, and a pair of openings in the opposite end sections are aligned with each other, respectively, when the opposite end sections are arranged in overlaying engagement.

Abstract: A ground adapter is disclosed which comprises an electrically conductive metal body having a threaded cylindrical end portion of a size fitting a threaded opening in the wall of an object to be grounded. The metal body has a transversely extending hole at the end portion opposite the threaded end. A small longitudinally extending threaded hole is provided in the end wall of the metal body and intersects the transverse hole for the ground wire. A screw member is positioned in the threaded hole and movable into and out of the transverse hole for anchoring a ground wire in place. In a second embodiment, the transverse hole may be threaded and the longitudinal hole made smooth to receive a ground wire extending therein. Other embodiments include auxiliary connections for securing a metal bonding ribbon in place as well as a grounding wire. One such embodiment clamps a metal bonding ribbon around a pipe or conduit for grounding.

Abstract: An adapter arrangement for heart pacemakers includes an adapter member of an elastic, insulating material and a clamping bushing of a conductive material. The clamping bushing is surrounded by the adapter member and defines a longitudinal bore. The adapter member further defines a threaded bore which extends transversely of the longitudinal bore of the clamping bushing. A plug lead provided with a pacemaker plug is connected to the adapter member. A clamping screw can be screwed into the threaded bore. A stripping device includes a stripping holder with an lead guide shaft which is insertable in the adapter member. A stripping ring is slidingly mounted on the lead guide shaft.

Abstract: A unitary power distribution block particularly suitable for high amperage application is disclosed. This new power distribution block features an electrical contact member in the form of a copper bus bar having distinct conductor engagement surfaces disposed in different horizontal planes. The bus bar is held within a steel skeleton to form an internal assembly and a shell of nonconductive material is molded around the internal assembly. The shell has a number of distinct conductor receiving cavities disposed on different horizontal planes of the distribution block.

Abstract: A clamp is provided for mounting a telephone interface box to an electric utility box. The telephone interface box is mounted to a plate which is in turn connected to a clamp secured to the utility box. A moveable slide plate can be used to secure the clamp by moving the slide plate to abut the lid of the utility box. A conduit for protecting a portion of an underground telephone feed is also provided.

Abstract: A lead-to-pacemaker adapter allows the use of a smaller diameter lead connector than that for which the pacemaker was designed. The pacemaker is shipped with the adapter installed. If the adapter is not to be used, provision is made for its easy removal. The adapter is shown and described for use in a unipolar lead system. The adapter permits direct electrical connection from the terminal pin electrode to the pacemaker connector block and its terminal set screw without the interposition of any intermediate connecting elements.

Abstract: A clip-connected terminal conductor uses a terminal lug for tightening together with a screw the line cable and the conductor end. A channel is provided in the lug for inserting therein, and guided by lateral wall of the channel, a spring-like member having centrally a boss which engages the aperture of the conductor end. The spring-like member has opposite ledges for clipping with the front and the rear edge of the base of the lug and channel.

Abstract: A clamping device having a U-shape provides a mechanical and electrical connection between two flat ribbons or strips of electrically conductive material. The strips of material may, for example, be thin copper bars for grounding purposes in an underground telephone vault. A mounting means allows the clamp to be secured to a structure wall. A pair of threaded bolts are offset from each other and are mounted in opposite legs of the U-shaped clamp. The bolts are formed with slotted heads for securing another conductor, such as a ground wire or ground ribbon, therein.

Abstract: A bracket provides a mechanical and electrical connection between a ground wire and a shielded cable. In one embodiment, a portion of the conductive sheath of the shielded cable is placed into an enlarged portion of a keyhole-shaped bore in a lug. The ground wire is placed into a reduced portion of the keyhole-shaped bore. A securing bolt threaded in an intersecting bore in the lug is then tightened to create a mechanical and electrical bond between the conductive sheath and the ground wire. In another embodiment, a pressure plate is placed into an oval shaped bore between the conductive sheath and the securing bolt. When the securing bolt is tightened, a mechanical and electrical connection between the conductive sheath and the bracket is accomplished through the pressure plate. In another embodiment, multiple first bores are fashioned through a lug to accept the ground wire in any of the bores without having to shape the ground wire into a hook-like connector. The securing bolt then engages the ground wire.

Abstract: A removable electrical ground clamp is provided that is easily installed on an outside electrical meter or breaker box by establishing pressure contact with the box. An attachment lug is provided on the grounding clamp for connecting a ground wire for use when electrical power is to be brought to a residence or some other outside electrical work or installation. The grounding clamp is designed to eliminate the need for access into an area of a residence or other building to establish a ground connection, provides instant visual inspection; and two grasping arms can be moved along an elongated member, which can be cylindrical, hexagonal, or U-shaped, in order to securely grip the outer surface of the meter or breaker box.

Abstract: A terminal box assembly for use in a dynamoelectric machine adapted to be energized from an electrical power source and including a plurality of windings and each winding terminating in a corresponding lead wire. The lead wires are connectable to each other and to an electrical power source in at least two different configurations for operating the motor from two different voltages. The terminal box assembly includes a plurality of terminations for connection to each of the lead wires and a terminal block having a plurality of apertures for receiving the terminations. A plug device is provided for coupling with the terminal block in at least two different orientations for interconnecting the lead wires of the motor windings. A base member is releasably coupled to the terminal block and includes a latch integral with the base for releasably coupling the terminal block and base member to the dynamoelectric machine.

Abstract: A screw connection device for electric conductors, is provided having at least one screw-clamping piece assembly. A structure integral with the insulating body of the terminal, partially surrounds the screw head and has at least one heel. This heel is applicable against an inclined face of the clamp and is adapted so as to hold the screw-clamp assembly in position against removal along the axis of the screw and against tipping towards the conductor insertion side.

Abstract: Line and load lugs are fixedly attached to each pole of a multi-pole molded case circuit breaker without requiring screws. The lugs are positioned within the line and load lug compartments at opposing ends of the breaker by grooves formed along the sides of the lugs and rails formed within the internal surfaces of the compartments. A lug support cap fitted to the bottom of each line and load lug interacts with detents formed on the inner surfaces of the compartments to securely retain the line and load lugs within the compartments.

Abstract: A grounding bushing and ground conductor attaching lug assembly comprises an annular bushing with a plurality of ears or bosses rasied from the outer surface of the bushing, and each of the ears or lugs has a planar top surface that defines a plane inclined with respect to the central axis of the bushing. Thus when the bushing is tightened in place on a conduit in an electrical panel or box, the outer surface of at least one of these ears or bosses is accessible from the opening of the panel. The grounding lug is adapted to mate with the surface of each boss or ear. Each of the bosses has a tapped opening so that the grounding lug can easily be connected with a screw to its respective boss. The grounding lug has a conductor receiving slot which is readily accessible from the exterior of the box. The grounding conductor is easily inserted and held securely in place.

Abstract: A ground contactor couples to the space between the pipe fitting used in the electrical supply conduit. The contactor consists of a knife-edge contacting surface having a screw thread adjustment located at the surface. The screw thread is a pointed screw thread which is adjustable without removing the contact surface for the space. The contact surface is clamped by a U-shaped clamp and tightened securely in the pipe fitting space. Angular contact surfaces are provided at the points of threaded adjustment between the clamp and the contactor so that forces are created for adjusting the clamp relative to the contact surfaces to permit the device to be used on conduits of different diameters. The contactor thus shaped and configured permits permanent electrical ground contact to be achieved and also permits serviceability of the electrical conductivity of the conduit connection arrangement without the necessity to move or otherwise disturb the ground contactor installation.

Abstract: A ground adapter is disclosed which comprises an electrically conductive metal body having a threaded cylindrical end portion of a size fitting a threaded opening in the wall of an object to be grounded. The metal body has a transversely extending hole at the end portion opposite the threaded end. A small longitudinally extending threaded hole is provided in the end wall of the metal body and intersects the transverse hole for the ground wire. A screw member is positioned in the threaded hole and movable into and out of the transverse hole for anchoring a ground wire in place. In a second embodiment, the transverse hole may be threaded and the longitudinal hole made smooth to receive an a ground wire extending therein. Other embodiments include auxiliary connections for securing a metal bonding ribbon in place as well as a grounding wire. One such embodiment clamps a metal bonding ribbon around a pipe or conduit for grounding.

Abstract: An improved terminal assembly for a panel board is disclosed which is simple in construction, easy to assemble and low in manufacturing costs. The panel board terminal assembly includes a bus bar mounted on support members formed of an electrically insulating material and a plurality of terminal frames each in the form of a substantially U-shaped cross section having a pair of opposed side walls and an intermediate wall interconnecting the side walls. The side walls have a pair of aligned openings formed therethrough into which the bus bar is inserted. A plurality of terminal screws are each threaded in the intermediate wall of each terminal frame for clamping an external conductor between the shank of each screw and the bus bar.

Abstract: To provide for electrical connection of electrical components through a rotating shaft in a manner facilitating assembly and disassembly of the connection for replacement of the components, a connector assembly is provided. The connector assembly includes an insert disposed within an insulator both of which are fixed within the rotating shaft in proximity to an opening therein, electrical terminals or contacts associated with each of the electrical components in spaced relation thereto, and a conductive bushing extending through the opening in the rotating shaft in electrically isolated relation thereto. Additionally, the connector assembly includes an externally threaded fastener for releaseably securing the electrical terminals or contacts and the conductive bushing to the insert in the insulator to electrically interconnect the electrical components in a manner accessible externally of the rotating shaft.