Showing papers on "Electrical connection published in 1977"

Printed circuit board

Abstract: An improved printed circuit board has an electrically insulating board which is made of a base containing synthetic resin, and has at least two conductors, one conductor being on one surface of said circuit board and the other conductor being on the opposite surface of the circuit board. At least one hole extends therethrough, and a conductive layer extends through the hole and covers at least part of the surface of the conductors for connecting the conductors on both surfaces of the circuit board through said hole. A filler composed of electrically insulating resin fills the hole and covers the surface of the layer for providing a highly reliable electrical connection between the two conductors on both surfaces of the circuit board.

Releasable electrical connecting means for the electrode terminal of an implantable artificial cardiac pacemaker

Abstract: An implantable, artifical cardiac pacemaker including a releasable electrical connection composed of a plug and a mating receptacle provided with conical sealing surfaces for the connection of an electrode, the sealing surfaces contacting one another, once connection is made, in a manner to hermetically seal the connection as well as of the interior of the pacemaker housing against external influences, a ceramic ring serving to insulate the conductive pacemaker housing from the connection.

Electrical switching device for thermal and overvoltage protection

Abstract: A normally open temperature sensitive electrical switching device includes a heat fusible electrically conductive pellet which melts and provides an electrically conductive path through the switching device at a predetermined temperature level and, further, includes arc contacts defining an air gap across which arcing will occur when a sufficient potential is supplied to the switching device. A first electrically conductive electrode and second electrically conductive electrode are electrically connected to first and second electrical leads provided for an electrical connection to the device. A nonconductive mounting arrangement holds the first and second electrodes in spaced relation. The heat fusible conductive pellet is positioned in contact with the second electrode and defines the air gap of predetermined dimension with the first electrode. Current will therefore flow between the first and second electrical leads when the voltage across the air gap is sufficient to cause arcing or when the fusible pellet is heated to its predetermined fusion temperature.

Solderless circuit board component

Abstract: A circuit board component, specifically a capacitor, which is configured to be machine-insertable into apertures of a circuit board to make a solderless electrical connection to electrical conductors positioned on and in the circuit board. The component is a cylindrical element which has portions of its outer surface affixed with an electrically conductive material which material is formed with a plurality of serrations. The serrations are designed to cut through and to make a force fit, gas tight, seal with the walled portions and the electrical conductors of a circuit board. The electrically conductive material also either forms a part of the component, such as capacitor plates and/or provides a contact surface for the connecting of an internally-mounted electrical component. An indexing means positioned on one end of the cylindrical element provides a mechanical indexing to insure the correct orientation of the component with regard to corresponding electrical contacts on the circuit board. A flange member extending from one end of the cylindrical element provides a stop in order to insure proper alignment of the component when the component is inserted into a circuit board by automatic means.

Cabinets for electrical or electronic equipment

Abstract: In a cabinet for electrical or electronic equipment, of the type in which the components of the equipment are mounted on vertically disposed printed circuit boards carried by supports movable on slides within a metal casing so that the supports can be easily withdrawn from the casing, the usual rigid drawer forming the support is replaced by a horizontally disposed printed circuit board movable in slides in the casing which also form connectors making electrical connection with conducting tracks on the horizontal printed circuit board. The horizontal board also carries a set of similar connectors to receive the vertically disposed printed circuit boards. The connectors are of the type whose contacts can be held open during insertion or extraction of a printed circuit board so that zero force is required for insertion or extraction.

Lamp-base assembly

Abstract: A baseless light bulb is locked into a one-piece molded base and the base provides mechanical and electrical connection of the light bulb to a circuit board.

Electrical connection device

Abstract: An electrical connection device provides an on-line extension of a multi-conductor electrical cable assembly permitting electrical entry of the cable circuits while they are operational, facilitates interconnection of plural multi-conductor electrical cable assemblies, enables hands-off probing of respective circuits of such assemblies, allows facile field modification of electrical equipment utilizing such assemblies, and the like.

Flexible conductor strips for miniaturized electrical systems

Abstract: A miniaturized electrical system comprises a number of electrical devices interconnected by conductive tape. The electrical devices and metal foil conductors are electrically connected in the system directly or indirectly to the metal foil conductors of the conductive tape and the entire system may be adhesively secured to the surfaces of a miniature device such as a doll house with the metal foil conductors fully covered and protected and adapted to be painted over so as not to be discernible. Brads are used to penetrate the conductive foils either to enhance the electrical connection between directly contacted foils or to establish electrical connection between foils separated by an adhesive strip. The kit of electrical devices and conductive tape features a miniaturized wall outlet which is physically secured to and electrically connected with the conductive tape by brads.

Multi-layer inductive electronic component - is made of stacks of flat ceramic dielectric blocks enclosing flat horizontal and vertical conductors

Abstract: The electronic component is of the type in which a block (50) of ceramic dielectric insulating material incorporates several stages of flat horizontal conductors. The flat conductors (120-150) in at least two of the stages each have a linear non closed part. An electrical connection (123-143) is mad between the conductors in each stage. The conductors and their connection are arranged so that when a current passes through the two conductors, the magnetic fields produced by the current in the conductors add in the vertical sense. The ceramic dielectric enclosing the conductors supports in additions at least two superficial electrodes. The electrical connection between the flat conductor of the different stages are internal connections. The flat conductor of two of the internal stages terminate respectively onto the two superficial electrodes.

Manually programmable storage device

Abstract: A program storage device which can be variably programmed manually. The device comprises for this purpose at least one printed circuit board having primary electrical contact surfaces and at least one secondary contact surface; a transverse board with a row of slits for each circuit board; and slide contacts which are designed for insertion into any of the slits in the transverse board for electrical connection, according to a desired program, with the primary and secondary contact surfaces.

Electrical connection between aluminum conductors

Abstract: An electrical conductor connection between at least two aluminum conductors which includes a weld nugget having a substantially cylindrical cross-sectional configuration perpendicular to the major surfaces of the aluminum conductors. The ends of the weld nugget are convexly cupped and extend outwardly past the major surfaces of the aluminum conductors to provide visual verification of joint integrity. The electrical conductor connection is formed by a method which includes providing an aperture in one of the conductors to be joined and providing a recessed backup against the other conductor, aligned with the aperture. Timed, multiple sequence MIG arc spot welding provides a weld nugget having the desired shape and diameter at the interface or throat between the two conductors. The method also enables the welding operation to be performed out of position, without sag or run of the molten pool of aluminum.

Electrical test connector apparatus

Abstract: A tester for backplanes, printed wiring boards and like electrical assemblies has contacts that mate without interference with contacts of the assembly under test, and has a displacement mechanism that shifts the assembly laterally. The lateral displacement brings the mated contacts into interfering engagement with each other for effecting electrical connection between them.

Automatic orientation circuit indicator device for portable power tools and the like

Abstract: A gravity-activated, electric switch rigidly mountable on any type of tool which is to be used in a precisely accurate position respective to a horizontal or vertical plane includes a sealed cylindrical case having an electric contact at each end, a spherical steel ball activated by gravity to freely roll inside the case for making electrical connection between the contacts, the contacts being located so that the gravity-activated ball makes connection therebetween only when the tool is in a precisely accurate position respective to a horizontal or vertical plane.

Terminal connection for aluminum conductor and method of making

Abstract: A method for bonding a copper terminal member to an aluminum electrical conductor wire. The copper member, having a point at one end, is driven with its pointed end into the terminal end of the aluminum wire, so that a cold weld is produced between the aluminum and copper which forms a good electrical connection.

Reliable sheath bonding connector and method of making

Abstract: The subject invention relates to a new connector assembly design for making a low resistance, stable electrical connection to a plastic coated aluminum shield adhering to and underlying polyethylene jacket of telephone cables. When the connector in accordance with the invention is applied across the composite sheath, it eliminates the creep strain exhibited by the polyethylene jacket and aluminum shield and results in a stable low resistance electrical connection, which is essential for noise-free operation of the cable and good lightning protection of enclosed telephone circuits.

Connection between a device in a metallic sheath and a transformer

Abstract: This electrical connection relates to an electrical link between a device in a metallic sheath insulated by a gas under pressure and a transformer insulated by a dielectric liquid. The connection comprises a jacket separating the interior volume of the transformer from that of the device and having a frustoconical insulating wall shielding the capacitor bushing and penetrating into the sheath. The insulating wall comprises on the outside of its base a flange having two concentric annular surfaces, one coming into contact with the sheath of the device and defining a junction plane between the interior volume of the device under gas pressure and the atmosphere, the other defining with another part a junction plane between the interior volume of the jacket filled with dielectric liquid and the atmosphere.

Electrical resistor testing fixture

Abstract: A modular test tray is comprised of individual modules solidly detachably secured together and shorting straps for rapid and easy electrical connection between modules. Each module is comprised of two tuning fork shaped connector pins embedded in the module and capable of detachable mechanical and electrical engagement with the shorting straps. Two posts capable of receiving electrical components to be tested are also embedded in the module and electrically connected to the connector pins. The posts protrude from the top of the module while the connector pins are recessed in grooves on the bottom of the module. Shorting straps consisting of intermittent strips of electrical conducting material, the strips being of sufficient length to electrically connect only two connector pins of adjoining modules and spaced apart so as to electrically connect consecutive pairs of connector pins, allows a series electrical connection of the components to be tested. Shorting straps consisting of continuous electrical conducting material allow a parallel electrical connection of the components to be tested. The individual modules are selectively detachably mounted together to provide easy replacement of worn out modules and to allow variance of the test tray size to accommodate multiple lots, sizes and value splits of components.

Combination insulating sleeve and electrical contact member for electro-plating rack

Abstract: A pressure sensitive electrical contact member which surrounds a first electrical conductor and completes an electrical connection between the first conductor and a second electrical conductor in response to relative pressure exerted thereon by the two conductors. As an example, the pressure sensitive electrical contact member may be used as an insulating sleeve which surrounds that portion of an electro-plating rack upon which the articles to be plated are supported. The sleeve includes a pressure sensitive electrical contact portion which is normally nonconductive but becomes conductive when the article to be plated is placed on the rack so as to complete an electrical connection between the article and the rack. Because only substantially that portion of the pressure sensitive electrical contact that the article contacts is electrically conductive, the effects of parasitic plating on the rack are greatly minimized.

Electrical connecting means

Abstract: An electrical contact to be made between an electrically insulated first conductive strip and a socket member having an electrical contact element therein in which a crimpable, electrically conducting, second strip is caused to pierce the first strip at two separate points after which the passed-through ends of the second strip are folded over into a region of the first strip between the two pierced points to pierce again the insulation of the first strip to effect a second electrical connection with the first strip, and the resultant crimped joint is then inserted into the socket member until at least two electrical connecting points are established between the crimped second strip and the contact element in the socket member.

Connecting means for making connections to fine wires

Abstract: Electrical connector means for establishing an electrical connection with a fine wire (AWG 32 and finer) comprises an insulating body having a cavity extending into one surface thereof and an electrical terminal which is dimensioned to have a force fit in the cavity. The terminal comprises a contact arm and a wedge arm which is beside the contact arm and slidably held in assembled relationship therewith. The electrical connection to the fine wire is established by positioning a portion of the wire in the cavity, inserting the terminal in the cavity with the contact arm extending beside the wire, and sliding the wedge arm along the contact arm so that the wedge arm bends the contact arm towards the wire and clamps the wire between the contact arm and a wall of the cavity.

Construction of electronic watch

Abstract: PURPOSE:To make possible the simplification in electrical connection processes among each element, and the improvement in reliability of the device, by forming an optical circuit using photo sensitive materials.

Oxygen concentration measuring instrument

Abstract: PURPOSE:An oxygen concentration measuring instrument which insures electrical connection and is difficult to cause failure of an elementary body by heat cycle.

Electrical insulator and method of making same

Abstract: Electrical insulator comprising an ouer tube of dielectric material filled with blocks of dielectric foam and sealed at its ends. The filling is manufactured independently of the tube in a material of substantially compatible coefficient of thermal expansion. The filling is connected to the inner surface of the tube by an adhesive interface material which provides good mechanical and electrical connection between the tube and its filling. Application to electrical insulators which are of large diameter and/or great length.

Electrical connections for extremely fine wires

Abstract: An electrical connection of a terminal to a fine wire comprises a terminal post having a free end and a fixed end. The wire extends along the post and is wrapped therearound intermediate the ends of the post. The terminal has a generally U-shaped cross secton and is crimped onto the post with the web portion of the terminal against the windings. The surface of the web has serrations which penetrate the varnish type insulation of the wire and establish the electrical contact. The terminal and the terminal post have features which ensure the achievement of the electrical contact without damage to the extremely fine wire.

Electrical connector for sequential connection and disconnection of circuits

Abstract: A connector assembly including a plurality of male connector members each disposed for mating with a female connector member. Each female connector member is disposed on a support so that as the male and female connector members are urged together, electrical connection between all said pairs of male and female connector members does not occur simultaneously. Likewise as the connector members are urged apart, electrical connection is broken for some pairs of male and female connector members before others.

Storage matrix with single transistor memory elements - has FET with U-shaped drain electrode and connections to storage capacitor and bit line

Abstract: The single transistor memory element has a drain (30) source (20) and gate (40) electrodes. The bit line conductor (10) is connected to gate electrode, and the source (20) is a doped region mounted on a silicon substrate of p-type conductivity. The drain electrode has a U-shaped profile and its dimensions are such that in normal operation no electrical connection can be made with the doped source region. Meander-shaped connections are used to form a matrix array out of the single unit elements. An insulating film is provided between gate electrode (40) of the FET and the gate electrode (50) of a storage capacitor. A number of parallel word-lines are provided, each alterante line have a connection to the FET associated with one bit line and the intermediate word-lines associated with the others.

Printed circuit board capable for live line connection and removal

Abstract: PURPOSE: To enable for the live line to be connected and removed, by releasing the electrical connection between the printed circuit board and the bus line, when the exchange of information is not made via the bus line of the like under request of live line connection and removal COPYRIGHT: (C)1978,JPO&Japio

Connector for the printing board

Abstract: PURPOSE:A connector capable of electrical connection in the state of the printing board parallel layered and capable of maintaining the certain electrical connection and does not need the special strict precision and the enhancement of cost even the number of connectors is increased.