Abstract: A pair of jumper cables for connecting between weak and strong batteries for transmitting power to jump-start a vehicle wherein the cables include a protective feature to isolate an electric spark from the general area of the batteries to prevent explosion. The cables comprise a first, continuous conductor cable adapted with clamps for attachment to the negative terminals or ground voltage of the respective batteries. A second, two-segment insulated conductor cable is provided having two medial and two distal ends, wherein each of the distal ends includes a conductive clamp for attachment to the positive terminals of the battery. The remaining medial ends of the positive cable are adapted for mutual, releasible attachment by an alligator clamp fixed at one of the medial ends. The remaining medial end is configured in size and shape to permit its firm grip within the opposing medial clamp.

Abstract: A shrouded electrical connector assembly with a male plug and a female socket, the male plug being contained within an insulating cup-shaped shroud and the female socket being contained within another insulating cup-shaped shroud. The male plug cup-shaped shroud is telescopable into the female socket cup-shaped shroud and a bayonet-type contact is provided between the male plug shroud and the female socket shroud. The male plug shroud partially telescopes into the female socket shroud before the male plug engages the female socket, and the male plug shroud and the female socket shroud each have aligned and opposed apertures to permit the shank of a T-shaped locking bar to be inserted therethrough, physically preventing the male plug from being brought into contact with the female socket. The locking bar is secured to the shrouded electrical connector assembly by a flexible cable and its shank is provided with one or more apertures to permit a lock to be attached therethrough.

Abstract: A water sealed electrical connector for assembly to a wire terminated by a conductive contact includes an insulative housing having a cavity extending in a front surface thereof and a hole communicating with the cavity and extending into a rear portion of the housing for receipt of the contact. A rubber bush is sealably received in the housing and has a hole in alignment with the housing hole for sealed receipt of the contact. A movable retention member is supported in the housing for latching engagement with the contact. An opening is provided in the housing to permit exterior access to the retention member by a tool, so as to enable the tool to move the retention member for insertion and withdrawal of the contact.

Abstract: The invention relates to an electric connector with a contact element of shape-memory material.The connector has at least one conducting male part and/or a female part intended to be inserted the one into the other for ensuring or breaking electric conduction. One at least of the male or female parts is of a shape-memory conductive material, at least at its active contact end. The male or female part is formed in a manner to enable its tight adaption to the complementary female or male part in a first shape-memory state and to enable ensurance of disengagement of the complementary female or male part in a second shape-memory state.Application to electric connectors used in electromechanics aeronautical or space electronic installations, information or telematic material.

Abstract: A socket for and a terminal with a wire guide means for straightening skewed filament wires from a wedge base bulb and with terminal means for making electrical contact with the filament wires.

Abstract: A protective cover for restricting access to the female sockets or connectors of an electrical outlet, thereby protecting infants and small children and others of limited understanding against electrical shock. The cover includes a base plate bearing an externally threaded boss which replaces the conventional outlet cover; a safety cap of the push-and-twist type threaded on the boss; protective members which are clamped by the safety cap against the boss overlying the socket being protected to deny access to the socket, both when the socket is in use and when it is not in service; and a platelike shield which normally overlies, and denies access to, a second female socket of the typical double socket wall outlet. This shield can be swung aside after backing off the safety cap to furnish unprotected, but controlled, and typically temporary, access to that second female socket.

Abstract: The invention relates to a connection element between an electric connector and a connector contact.The element comprises a shank intended to receive the electric cable and an active contact part intended to ensure electric connection and mechanical cohesion with the contact. The active part at least is of conductive shape-memory material and is shaped in a manner to be able to tightly adapt to the contact in a first shape-memory state, and to be able to ensure the disengagement and/or engagement of the element in a second shape-memory state.Application to hermetic connectors and other non-demountable contact connectors.

Abstract: The cardiac pacing system comprises a cardiac pacer, and a multiconductor pacing lead having a distal end and a proximal end having a plurality of spaced apart ring electrodes thereon. The pacer comprises a metal case mounting electronic/electrical circuitry, and a power supply therein and having a top side. A soft pliable elongate neck is mounted to the top side of the case. A connector assembly is located inside said neck for connecting the cardiac pacer with the proximal end of the pacing lead and comprises a plurality of spaced-apart U-shaped electrical contacts and insulated conductors extending through the top side for coupling the electrical contacts to electrical circuitry in the case. The neck has at least one elongate lumen therein into which extend the electrical contacts and has an open end for receiving the proximal end of the pacing lead.

Abstract: A separable electrical connector for a plurality of axially connectable cylindrical electrical terminals adapted for coupling to the threads of insulated wires and having an annular external recess on each of the terminals. The connector include an elongated, rigid, nonconductive, generally tubular member having a plurality of apertures extending axially therethrough and a plurality of outboard ramping retention abutments formed integrally with the tubular member upon at least one inner surface of a radially outboard portion of the tubular member. A plurality of axially extending terminal guide fingers is included upon a central land located within the tubular member. A spacer engages with the central land for displacing the terminal guide fingers in the direction of the ramping retention abutments so that the terminals will be retained securely within the connector assembly.

Abstract: A jack for a telephone set comprises a dust-proof closure unit having a first cover plate provided with a guide groove extended in a sliding direction and a second cover plate provided with a guiding projection engageable in the guide groove of the first plate, the first and second cover plates being arranged slidable relative to each other along a plug receiving aperture in a casing of the jack to close or open the aperture, whereby the first and second cover plates of the closure unit can be retracted as overlapped with each other to their aperture opening position so as to reduce their retractive dimension substantially to be half in the sliding direction, and the dust-proof closure unit can be provided for the plug receiving aperture without any increase in size of the casing.

Abstract: An electrical power receptacle having a tubular plastic housing with a transverse end wall at one end, and a tubular metal well which is snap fitted in the housing by means of an apertured end wall adjacent the housing end wall, cooperating with hooks in the housing. Two terminals mounted on the housing end wall project for connection to a source of power. One of the terminals engages the shell and the other terminates in an internal contact member. The housing has integral spaced-apart stand-off mounting legs, and a pivotally mounted cover plate which, when closed, seals the housing and interior contacts thereof.

Abstract: A terminal retaining structure for a connector, having a terminal locking tongue formed integrally with the connector housing so as to extend at an angle to the upper surface of the connector housing and to be bent flat over the upper surface of the connector housing for retaining a terminal inserted in the terminal chamber of the connector housing, and provided with a hook or hooks corresponding to the terminal chamber or terminal chambers, respectively. When the locking tongue is bent flat over and locked to the upper suface of the connector housing with a catch, the hook engages the shoulder of the terminal inserted in the terminal chamber and pushes the latter inward to the correct position and retains the terminal firmly at the correct position. The terminal retaining structure is applicable to both a single connector or a multiple connector.

Abstract: A wall cover plate assembly having a face plate defining electrical plug receiving openings. A guide on the rear side of the face plate slidably confines independent closures each of which is biased to a closed portion by a tensioned member. The guide also defines openings through which the electrical plugs may be inserted. A modified form of cover plate assembly provides for securement of the guide by means of a mortise and tenon joint. A barrier overlying the rear side of the cover plate blocks air and sound from entering a room via an electrical outlet. Recessed closures also inhibit air and sound passage.

Abstract: An electrical connector comprises a connector body having two rows of terminal cavities which extend axially through the connector body. The connector body has a nose portion which comprises a plurality of ribs which define channels at the forward portions of the terminal cavities. An elastomeric seal ring is mounted on the connector body and extends across the channels to bias the terminals against the bottoms of the channels and into interference positions with respect to lock shoulders which retain the terminals in the rearward direction. A cap member mounted on the nose portion of the connector body retains the terminals in the forward direction, holds the terminals in their interference positions in the terminal cavities and fastens the elastomeric seal ring in the axial direction.

Abstract: This invention comprises a connection between a plurality of electrical conductors such as a mainline conductor and a tap or branch line conductor. The connection utilizes a connector comprising a pair of members which clampingly engage one conductor. One of the clamping members includes means for engagement with another conductor. The clamping members are smoothly contoured and free of sharp edges and all other parts are completely recessed within the clamping members when the connector is installed to prevent interference with or damage to insulation applied to the connection.

Abstract: Methods and means are provided for detachably interconnecting electrical components in an electrical system located and used in a disadvantageous environment. An improved connector device is provided which is composed of spaced-apart metallic terminals embedded in a substantially rectangular body member and adapted to be electrically joined with leads in a cable or the like. One pin-end portion of each terminal is located in a sidewall recess in the body member, and the other socket-like end portion of the terminal projects into and through a plug-like extension from the body member opposite the sidewall recess containing the pin-like end portion.

Abstract: Electrical socket apparatus, for example, for safety supporting and supplying electricity to an electrical appliance, which are provided with at least live and neutral terminal pins. The apparatus includes locating means which are engageable by the electrical appliance to locate the appliance in a predetermined position, live and neutral sockets to receive the live and neutral terminal pins, electrical conductors in the sockets, switch means which are actuable by the electrical appliance being placed in a predetermined position to make an electrical connection to at least one of the electrical conductors, and a displaceable member which projects into the sockets and is movable against a bias to actuate the switch means, to prevent risks, e.g. electric shocks and overheating of contacts, and to hinder misuse of the apparatus.

Abstract: A message bearing cover for attachment to electrical wall switches comprises a cavitated cover adapted to be releasably attached to an existing electrical wall switch installation and movable from a closed position enclosing the wall switch lever to an open position allowing access to the wall switch lever. The front surface of the cover is adapted to receive and visually display selective messages printed on message tabs. The message tabs are visible when the cover is in the closed position. In one embodiment, the attachment portion of the cover is captured between the wall switch cover plate and the wall surface, and in another embodiment the attachment portion serves as a cover plate which may is mounted to the underlying switch.

Abstract: One end of an electrical connector first contact is a metallic cylinder which is hollow to receive a cable wire for soldered or crimping securement. A second contact has a body portion constructed substantially the same as the first contact except that its pin end is faced off to a flat surface. A hollow cylindrical metal shell with one closed end and a flanged open end is slidingy received on the body portion other cylindrical end. Mating engagement of the connector parts brings the radiused pin end of the first contact into pressurizing connection with the second contact metal shell establishing the desired connection. Unmating may be accomplished by either axial or transverse relative movement of the connector parts. In a further embodiment the hollow cylindrical metal shell has one or more inwardly formed spring fingers that slide over the enlarged head during assembly and prevent inadvertent removal of the shell from the rest of the contact.

Abstract: The connector is formed by at least two supports (1,2) of insulating material of which at least one is of an elastic plastics material and which are assembled together with one interior face against the other interior face. The profiles of these two supports (1,2) are such that, when thus assembled, they delimit therebetween a series of cavities (4) which open onto at least one of the transverse faces of the assembly (7) of the two supports. The interior face of at least one of these supports is coated with at least one metallized track at the place of each cavity (4).