Abstract: An antenna detaching-proof rotation idling device having a metal connector with an electroplated inner bore to lock on an antenna-connecting seat of a mobile phone. The connector has its threaded section extended down from its main disk body. An insulating piece is mounted in the inner bore of the connector in a tight connecting mode. A central guiding needle is installed in a central bore in the insulating piece in a loose connecting mode. The top end of the needle gets above the disk body of the connector to mount an electric circuit board. The bottom of the needle is exposed a given length under the connector. The portion of the connector above the disk body is ejection shaped into a sleeve. The sleeve, the electric circuit board and the needle are connected and moved together. The connector being plated with a layer of white chrome, after the sleeve is mounted, it will be rotation idling when being rotated.

Abstract: A method of making an electrical connector includes the steps of: a. stamping and forming a contact strip (10) and a number of contacts (12) on the contact strip; b. defining a recess (16) in a tail (14) of each contact; c. applying a first finish of nickel material on portions of the contact having the recesses followed by a second finish of tin-lead alloy material; d. injection molding an insulative housing (20) to the contacts; e. bending the tails outwardly; f. severing the contact strip from the contacts at the recesses.

Abstract: An electronic component is obtained by forming a primer plating layer of a material which is poorly wettable to a weld brazing material 3 on a base member 11X of a contact 11 having a terminal section 111 for brazing and a contact section 112, and then forming a finish plating layer of a material which is highly wettable to the weld brazing material on the primer plating layer. An exposed region of the poorly wettable primer plating layer is formed thereafter by selectively removing a portion of the finish plating layer at the terminal section 111 and served as an arresting region for arresting the weld brazing material 3 from creeping up and migrating along the highly wettable plating layer in brazing the terminal section 111 to the brazing pad 22 of a wiring board 2.

Abstract: The invention relates, in general, to electrical connector assemblies, and more particularly to plastic electrical connectors that employ metal plated plastic contacts. According to an aspect of the invention, an electrical connector is provided comprising a plastic shell having an open cavity that defines an internal surface, and an electrical connector contact that comprises a metal coated area of the internal surface.

Abstract: An electric lampholder is provided with a cantilevered center contact. The contact is formed from a spring-like material. The portion of the contact that contacts the lamp eyelet is composed of a material having an electrical resistance less than that of the spring-like material.

Abstract: A method of making the electrical connector (100) includes the steps of: a. forming a housing (2) which defines a chamber (20) therethrough in a rear-to-front direction; b. making a contact module (3); c. stamping and forming a shield (1) having a body portion (12) and a pair of integral solder tails (13) on the body portion; d. applying a plating of nickel material on both the body portion and the integral solder tails of the shield; e. applying a plating of tin-lead alloy material on only the integral solder tails by selective plating; f. assembling the contact module, the housing and the shield together.

Abstract: A spring contact includes a free portion having a tip. The free portion includes a contact surface and side surfaces. In some embodiments, a wear resistant material is formed on only selected portions of the tip. In other embodiments, the wear resistant material is formed on the contact surface and on the side surfaces. The wear resistant material increases the wear resistance of the spring contact. The spring contacts can be used in probes.

Abstract: The invention relates to a cable lug including a receiving section (12) for a cable and an attachment nut (16), wherein a defined contact area having a defined contact force exists between the cable lug (10) and a counter surface to be contacted. To this end, a contact section (14) is provided which is equipped with a bead which by means of the attachment nut (16) can be forced against a counter surface to be contacted.

Abstract: Microelectronic contacts, such as flexible, tab-like, cantilever contacts, are provided with asperities disposed in a regular pattern. Each asperity has a sharp feature at its tip remote from the surface of the contact. As mating microelectronic elements are engaged with the contacts, a wiping action causes the sharp features of the asperities to scrape the mating element, so as to provide effective electrical interconnection and, optionally, effective metallurgical bonding between the contact and the mating element upon activation of a bonding material.

Abstract: A flexible printed circuit board has a copper foil serving as a conductive pattern, a nickel layer and a gold layer stacked in sequence on a base film made of polymide at an area to be electrically connected by wire bonding. The wire bonding is made by an aluminum wire and the nickel layer having a thickness of 10 &mgr;m to 20 &mgr;m. An ink jet recording head for discharging ink droplets from a discharge port onto a recording medium for recording thereon is electrically connected to an ink discharge unit by the flexible printed circuit board.

Abstract: The invention is directed to connected metallic conductors which are flat and made from aluminum or aluminum-copper compounds. Oppositely-located contact surfaces (3) are provided with grooves (4), indentations or the like on the conductors. During assembly, the contact surfaces (3) are brought into direct contact, and the conductors are pressed together with such a strong force that a plastic deformation and, consequently, a metallic, electrically-conductive contact are effected at a plurality of locations at the contact surfaces. The plastic deformation effects a breaking open or splintering of oxide layers present at the contact surfaces, which exposes bare metal for producing the contact. The pressing force can be generated by tightening screws (in bores 2), which are led, for example, directly through the contact surfaces (3). A connection of line-bar segments with a plurality of parallel conductors is also described.

Abstract: An electrical connector includes an outer shell having grounding legs provided thereon. The outer shell and grounding legs are preferably made of stainless steel. The grounding legs are treated to form a coarse surface, and then a metal coating is applied thereon such that a coarse metal surface is provided. Alternatively, a metal coating is applied to the grounding legs, and then treated to form the coarse surface. The coarse surface enables easy soldering of the grounding legs with a printed circuit board. The coarse surface can be formed on the entire outer shell if desired.

Abstract: An electrical connector comprises connector contacts having a metal base and a surface finish layer over the base, the surface finish layer being a composite of an electroplated precious metal composition and wear resistant particles dispersed therein. In the preferred embodiment, the precious metal layer is a PdCo alloy and the wear resistant particles are sub-micron sized lubricating particles, e.g. polytetrafluoroethylene particles and a flash coat of gold is provided over the composite layer.

Abstract: Deposition of metal in a preferred shape, including coatings on parts, or stand-alone materials, and subsequent heat treatment to provide improved mechanical properties. In particular, the method gives products with relatively high yield strength. The products often have relatively high elastic modulus, and are thermally stable, maintaining the high yield strength at temperatures considerably above 25° C. This technique involves depositing a material in the presence of a selected additive, and then subjecting the deposited material to a moderate heat treatment. This moderate heat treatment differs from other commonly employed “stress relief” heat treatments in using lower temperatures and/or shorter times, preferably just enough to reorganize the material to the new, desired form. Coating and heat treating a spring-shaped substrate provides a resilient, conductive contact useful for electronic applications.

Abstract: A terminal material is composed of a base material and a plurality of plating layers provided on the base material and containing an Sn-plating layer as its outermost layer. When the plating layers include an Ni-plating layer, the plating layers are formed so that the Sn-plating layer does not come in contact with the Ni-plating layer. A crimp portion of a crimp terminal is formed of the terminal material.

Abstract: An electronic assembly comprising an electronic substrate and a plurality of conductive interconnection elements. The substrate has a first side having a plurality of terminals. Each interconnection element has a base secured to a respective one of the terminals, a contact region distant from the electronic substrate, and an elongate freestanding section which can bend when pressure is applied to the contact region.

Abstract: A contact strip includes a number of conductive contacts (4), a contact carrier (5) and a corresponding number of links (6) connecting corresponding contacts to the contact carrier. Each contact includes a contact portion (42) and a soldering portion (43) opposite the contact portion for attaching a solder ball for soldering to a printed circuit board. The contact portion is plated with gold using a molten gold plating liquid for enhancing electrical/mechanical characteristics of the contact portion. Each link defines a longitudinal slot (61) for obstructing a wicking path from the contact to the contact carrier. Furthermore, an elongate opening (52) is defined in the contact carrier above and perpendicular to a corresponding slot to further prevent the plating liquid from wicking up to the contact carrier, thereby preventing loss of the expensive plating liquid and reducing the cost of the contact.

Abstract: An electronic assembly. The electronic assembly includes a first substrate which has a first set of contact pads and a second substrate which has a second set of contact pads. A plurality of elongate, springable interconnection elements are located between the first substrate and the second substrate. Each of the plurality of elongate, springable interconnect elements is free standing and has a portion permanently attached to a respective contact pad of the first set of contact pads and has a second portion contacting a respective contact pad of the second set of contact pads. The first and the second substrates are brought into a fixed relationship relative to one another.

Abstract: A solderable metallized plastic contact includes an element made of a polymer where an electrically conductive material covers a surface of the element so as to form an electrically conductive region on the element. The electrically conductive material is electroplated to the surface of the element. The electrically conductive material in the electrically conductive region is solderable. The electrically conductive material in the electrically conductive region does not delaminate from the surface of the element. Additionally, a method of manufacturing a solderable metallized plastic contact is also disclosed.

Abstract: A method of coating a metal part that is to be soldered, in particular a part of an electrical connector for high frequency signals, in which method a layer of white bronze is applied to said part. The layer of white bronze is initially covered in a fine layer of palladium, and then in a fine layer of gold.

Abstract: A tin coated electrical or electronic component has enhanced resistance to oxidation and tarnishing as well a smaller increase in contact resistance when exposed to elevated temperatures. These benefits are achieved by depositing a relatively thin, on the order of 5-50 angstroms thick, layer of zinc on the tin coating prior to heating. A subsequent step of heating the sample to a temperature and time effective to convert all free tin to an intermetallic imparts the additional advantage of reducing the coefficient of friction.

Abstract: There is disclosed a fitting-type connection terminal in which an insertion force for a terminal can be reduced while maintaining a stable contact resistance. If the thickness of a tin film on one of male and female terminals is 0.1 &mgr;m to 0.3 &mgr;m while the thickness of a tin film on the other terminal is not less than 0.1 &mgr;m, the hardness of the terminal is increasingly influenced by the hardness of a base material (of copper or copper alloy) with the decrease of the thickness of the tin film, so that the apparent hardness of the terminal increases. As a result, the adhesion of the tin film is suppressed, and the terminal insertion force can be reduced at least by more than 10% as compared with a reference value (1.0 &mgr;m for each of the male and female terminals). Particularly if the thickness of the tin film on the male terminal 10 is 0.1 &mgr;m while the thickness of the tin film on the female terminal 20 is 0.3 &mgr;m to 1.0 &mgr;m, the insertion force can be reduced by more than 30%.

Abstract: A high-frequency connector includes a housing 1 serving as an external conductor and a central conductor 2. The housing and the central conductor are fabricated by applying electroless plating of nickel alloy containing phosphorus onto a nonmagnetic base material.

Abstract: Bar composed of an aluminum section with which copper contact jumpers are brought into intimate contact at the end or at regular intervals.The flanges of jumpers 20 have silver plated areas A on their internal surface, for example in the form of strips 24 transverse to the length of the bar and silver plated areas B on their external surface located between the areas A and the web of the jumper. The internal silver plated areas contribute to welding the jumper to the section and the external areas are used for making contact with junction devices or fish plates.

Abstract: The invention relates to a strip composite material with a base material of a metal or a metal alloy and a tin coating on the surface, whereby an intermetallic phase (IMP) is formed between the base material and the coating. In particular for achieving good wear and corrosion resistance of the composite material with a simultaneously oxide-free surface, 1 to 50 At.-%, preferably 6 to 30 At.-%, carbon (C) are embedded in an outer surface region of the tin coating up to a thickness D of approximately 2 .mu.m. A method (oil treatment) and apparatus for the manufacture of the composite material of the invention are also disclosed.

Abstract: An electrical connector is disclosed for enhancing the thermal emissivity of an electrical connection. An electrical connector, such as a typical C-member and wedge style connector, is provided that is constructed of electrically conductive material and has a surface treatment on the exterior surfaces of the connector that increases emissivity of the connector. Contact surfaces are provided on the connector that are electrically conductive for ensuring electrical continuity within the connector. The surface treatment operates to increase the thermal transfer efficiency within the connector and thereby lower the operating temperature of the connector.

Abstract: A terminal assembling structure includes a terminal metal fitting having a tinning layer on a surface thereof, a connecting portion overlapped with the terminal metal fitting, and a fastening member fastening the terminal metal fitting and the connecting portion. An adhesion phenomenon of metal is generated between the terminal metal fitting and the connecting portion by the fastening of the terminal member.

Abstract: A cable termination for a high-voltage cable (1) with a solid insulating material (3) in an open connection to a circuit comprises a male part (A) and a female part (B) which are assembled into an electrically conducting mechanical joint. The male part comprises the cable (1) with a contact plug (6) attached to its stripped conductor (2), and a surrounding insulating body (23). The female part comprises an elongated electrode (9) provided with a contact sleeve (10) and embedded into a field-controlling body (8) with a sleeve-shaped shield termination (11), connected to ground, which has a funnel-shaped end portion (30). The contact plug (6) is adapted to be inserted into the contact sleeve (10) such that a connection with good mechanical strength and conductivity is achieved. The electrode (9) extends through the major part of the field-controlling body (8) and the connection point between the conductor and the electrode is arranged inside the end portion of the shield termination.

Abstract: An electrical terminal is disclosed where the terminal is formed of an electrically-conductive metal substrate such as copper alloys, aluminum alloys or stainless steel with the substrate having a codeposited composite coating of titanium nitride and gold or silver on the surface. The coating provides wear resistance in high temperature and vibration environments while retaining and demonstrating low friction and low contact resistance properties.

Abstract: An improved electrical terminal having a tri-beam construction is adapted to be received in an electrical connector housing and includes two retention beams which provide high normal retention forces to a conventional male pin contact slidably disposed therebetween. A third beam is disposed substantially parallel to the two retention beams and constitutes a contact beam which provides a standard normal force and a contact surface which is selectively gold plated on a contact interface region defined thereon. The contact interface region defines an area in which the male pin contact and the electrical terminal establish an electrical connection. The connector beam is offset from the retention beams so as to define a space in which the male pin contact is retained.

Abstract: Nesting electrical connectors comprising a substrate and a silver-nickel-carbon electrodeposit atop the substrate. The electrodeposit is at least about 0.5 micrometers thick, and comprises about 10 to about 25 atomic percent nickel which is dispersed as a discontinuous phase throughout a continuous phase of the silver and has a Scherrer grain size less than about 5 nanometers. The carbon comprises about 5 to about 15 atomic percent of the deposit and has a non-crystalline graphite structure.

Abstract: An electronic part, particularly a microstructure contact having an overall length of the order of 5 mm for an electrical connector or the like is provided with a nickel oxide layer portion having a nickel oxide layer of the order of 50 to 5000 .ANG. in thickness formed by anode oxidizing process using a solution mainly consisting of an alkaline solution. The nickel oxide layer portion is located between a terminal portion of the electronic part to be soldered as in a surface mounting process and a contact portion continuous to and extending from the terminal portion. The nickel oxide layer has a width of the order of 0.2 to 1 mm in the longitudinal direction of the contact and has a performance preventing the flowing of molten solder, thereby effectively preventing the flowing and wicking due to wetting of solder of the solder-plated portion toward the other portions as in the surface mounting process.

Abstract: An electrical conductor has a copper base substrate coated with a tin base coating layer. To inhibit the diffusion of copper from the substrate into the coating layer and the consequential formation of a brittle tin/copper intermetallic, a barrier layer is interposed between the substrate and the coating layer. This barrier layer contains from 20% to 40%, by weight, of nickel and is preferably predominantly comprised of copper. In one embodiment, an intermetallic layer selected from the group (Cu--Ni).sub.3 Sn, (Cu--Ni).sub.6 Sn.sub.5, Cu.sub.3 Sn, Cu.sub.6 Sn.sub.5 is disposed between the barrier layer and the tin base coating layer.

Abstract: A coated Cu alloy having a high hardness surface which contains intermetallic compounds consisting essentially of Cu and Sn is produced by coating the surface of a Cu alloy with Sn and heat treating the coated Cu alloy to form on the surface thereof a high hardness coating containing Cu--Sn intermetallic compound(s). The coated Cu alloy has improved resistance to abrasion and corrosion and good workability, which permits producing terminal connectors therefrom. The Cu alloy which is coated with Sn consists essentially of 0.01-15 wt % Ni, 0.1-10 wt % Sn, 0.005-0.5 wt % P, and optionally 0.01-40 wt % in total of one or two or more elements selected from the group consisting of Fe, Co, Zn, Ti, Mg, Zr, Ca, Si, Mn, Cd, Al, Pb, Be, Te, In, Ag, B, Y, La, Cr, Ce and Au, with the balance being Cu and incidental impurities.

Abstract: A releasable connector for electrically connecting a cable to a generally cylindric battery post comprises a body portion adapted for substantially surrounding and clamping the connector to a generally cylindric battery post and a cable attachment portion connected to the body portion for conducting electricity between the body portion and a cable. The structure of the body portion being comprised solely of a strip of sheet metal configured to create opposed partially cylindrical section shapes with juxtaposed free ends normally inwardly biassed in compression towards one another for clamping about a substantially cylindric battery post.

Abstract: A battery pack utilizes a battery pack contact assembly to ensure a good connection between the battery pack and the device being powered by the battery pack. The contact assembly includes a carrier, a first contact integral with the carrier, and a second contact integral with the carrier stamped from a conducting weldable material. A score line is provided between the carrier and the contacts. A selected portion of the contacts is plated with gold, defining an exposed weldable surface and a selectively plated surface. During assembly, the exposed weldable surface is welded to positive and negative terminal poles of the battery pack, and the carrier is fatigued along the score lines and removed. The resulting contacts are securely attached to the terminal poles of the battery pack and provide a gold-plated surface for contact with the battery pack powered device.

Abstract: An interconnection device is disclosed for providing electrical connection between two conducting elements that requires less applied force than a standard ohmic connection device of the same connection area. A surface of at least a first conducting element includes a plurality of atomically sharp projections for creating a strong electric field near the tip of each projection, each projection being disposed within a locally depressed portion of an insulating layer that serves to maintain a space between each tip and a second conducting element that contacts the insulating layer. The strong electric field at each tip induces a variety of conduction modes each contributing to an aggregate current flow from the first conducting element to the second. In an alternate embodiment, a plurality of projections are disposed on the peaks and valleys of a rough surface without an insulating layer, the projections providing a variety of conduction modes.

Abstract: An electrical contact has a general flat sheet metal support with a pad portion that is twisted (e.g., by about 90 degrees) out of the plane of the metal support, and a contact body attached to the pad portion. The contact may be made by welding a contact body on a pad portion of the contact support while the contact support is essentially in its original flat state; and using one progressive stamping die to isolate the pad portion, form a twist, and stamp out the contact, so that the pad portion is in a plane that is generally perpendicular to the plane of the contact support.

Abstract: Assembly and method of installing an electrode of a predetermined size and configuration in an electric heater envelope having an electrode opening at a preselected position. The assembly and associated method consist of affixing a hollow compression fitting about or within the electrode opening and providing a sleeve of a refractory deformable dielectric material within the fitting through which the electrode passes into the envelope. Dielectric spacing means are positioned between the electrode and electrically conductive portions of the fitting or envelope to prevent electrical conduction therebetween. Compression fastening means are then provided, securable to the fitting, to impart sufficient compressive force to the assembly to deform the sleeve about the electrode, thereby effectively sealing and securing the electrode within the fitting without the electrode grounding against the fitting or the envelope.

Abstract: A terminal, and methods for manufacturing the terminal, in which the opening defined by the electric contact portion is filled with a material. As a result, plating solutions will not become entrapped in the opening so that corrosion of the terminal will be prevented. The terminal includes an electrically conductive plate including a wire connecting portion for clamping a wire thereto and an electric contact portion for mating with another terminal, the contact portion including a cavity therein; and a filler material disposed in the cavity. As a result, when the terminal is subjected to metal plating, solutions associated with the metal plating are substantially prevented from entering into the cavity. According to one method, the filler material is first adhered to the conductive plate before the plate is bent into the shape of the terminal. According to a second method, the filler material is injected into the cavity of the contact portion after the terminal has been bent.

Abstract: An electrical connector for connection to multiple cables comprises, multiple conductor elements (36), and multiple insulating separator elements (38) separating the conductor elements (36) from each other, body portions (40) of the conductor elements (36) and the separator elements (38) are fabricated from sheets of material laminated together, an array of spaced apart spring contact portions (22) project from the body portions (40), and an array of spaced apart termination portions (56) project from the body portions (40) for connection to respective conductors of multiple cables, and a transverse shield (48) extending across edges on the conductor elements (36) and edges on the separator elements (38).

Abstract: A feedthrough (34) is formed of a feedthrough plate (44) having at least one bore (46) therethrough and a feedthrough pin (48) hermetically sealed into the bore (46). The feedthrough pin (48) includes an elongated pin (50) having an axis of elongation (52), a recess (54) in at least one end of the pin (50), the recess (54) extending parallel to the axis of elongation (52), and a gold coating (56) within the recess (54). There are preferably a plurality of bores (46) in the feedthrough plate (48) and a corresponding plurality of the feedthrough pins (48). The gold coatings (56) at the ends of the feedthrough pins (48) are desirably lapped to ensure coplanarity and a smooth surface finish especially suited for wire bonding or tab bonding.

Abstract: A method for producing groups of contact elements for 90.degree.-angle plug connectors by the press-in technique, includes forming the contact elements with a stamping device into a contact region on a plug side having a plugging direction, a terminal region on a terminal side, the terminal region having a press-in segment extending at right angles to the plugging direction, and connecting struts joining the press-in segment to the contact region. Different cutting tools are inserted into the stamping device to produce groups with a different number of contact elements. Different connections are stamped between the contact regions and the terminal regions of certain contact elements with the cutting tools.

Abstract: A contact element has a mating portion (20, FIG. 4B) that lies slightly above a card-engaging surface (48) to engage a terminal on a data card, with the mating portion constructed to avoid damage from small objects improperly pressed sidewardly against the mating portion. The middle (23) of the mating portion which lies above the horizontal card-engaging surface, is curved about both laterally-extending and longitudinally-extending axes, to form a dome with a convex upper surface, or a "spoon" shape.

Abstract: A contact assembly formed from an array of insulated resilient solid wires arranged in spaced apart side-by-side relation to each other and retained in assembly by an ultrasonically assembled two-part carrier strip which extends transversely of the wire array. Notches formed in the wires by grinding define exposed conductive surfaces at selected locations. The conductive surfaces are plated with precious metal to define contact surfaces on the wires which are formed to contact configurations.

Abstract: An improved connector for an electronic module or the like includes a housing having a socket opening that is sized and configured to accept an electronic module, and a plurality of terminals mounted to the housing. Each of the terminals has a foot portion having a layer of non-solderable material coated on one side of the foot portion to prevent solder from adhering to that side. A capillary nest is formed by a channel surface on the underside of the foot portion when the terminal is mounted on a conductor pad such that solder flows through the capillary nest under the influence of capillary forces from the side of the terminal having a non-solderable coating thereon to the other side for forming a solder joint on that other side. A ring of non-solderable material is coated around a middle portion of the terminal to prevent solder from flowing to the electrical contact surfaces located above the ring.

Abstract: A communications jack includes a spring block having a plurality of conductors. A jack housing has an opening. A comb is separate from the spring block and the jack housing, and is attachable to the spring block. The comb holds ends of the plurality of conductors in spaced relation to one another. The spring block and comb, when attached, are insertable as a unitary piece into the opening in the jack housing.

Abstract: A cordless electrical appliance includes a male pin connector which engages vertically with a female socket connector mounted in a base for the appliance. The contacts are arranged such that one of the line or neutral connections makes last and breaks first. This connection includes a silver, copper backed contact mounted on a leaf spring with a corresponding male pin being made of copper and having a thin silver plating at least in a region of contact with the copper backed contact.

Abstract: A connector contact mounting hardware includes an elongated strip of contact holder frame having pairs of notched upright wings on two opposite sides, and a plurality of contacts respectively made of a round wire rod and retained in respective retaining notches on either pair of upright wings, each contact having a front contact body extended out of either upright wing on one side for plating with gold, a notched tail extended out of a corresponding upright wing on an opposite side for plating with tin and for mounting a conductor, and a dovetial-like lower portion between the front contact body and the notched tail.

Abstract: A cordless electrical appliance includes a male pin connector which engages vertically with a female socket connector mounted in a base for the appliance. The contacts are arranged such that one of the line or neutral connections makes last and breaks first. This connection includes a silver, copper backed contact mounted on a leaf spring with a corresponding male pin being made of copper and having a thin silver plating at least in a region of contact with the copper backed contact.