Two Layers Patents (Class 200/268)
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Patent number: 11394146Abstract: A connection pin for an expansion socket can be treated to improve signal (e.g., reduce noise) for high speed applications. A connection pin can be treated to have a conductive plating covering a proximal region of the connection pin. Electrical signals between an expansion card in contact with the connection pin and the circuit board to which the connection pin is coupled can pass directly through the conductive plating of the proximal region. However, the distal region of the connection pin can be treated to be devoid of the conductive plating, such as by being covered with a high dielectric loss and/or high-resistance material or through removal of the conductive plating in that region. Thus, electrical signals passing through the connection pin will tend to pass through the conductive plating rather than along the distal region of the pin. Thus, signal reflections and other artifacts and noise can be avoided.Type: GrantFiled: April 7, 2020Date of Patent: July 19, 2022Assignee: QUANTA COMPUTER INC.Inventor: Cheng-Hsien Lee
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Patent number: 11385106Abstract: An assembly for detecting a temperature of an electrically conductive element comprises a temperature probe and a heat conductor separate from the temperature probe and made of an electrically insulating and heat-conductive material. The heat conductor surrounds the temperature probe at least in sections and has a bearing surface bearing against the electrically conductive element.Type: GrantFiled: March 20, 2019Date of Patent: July 12, 2022Assignee: TE Connectivity Germany GmbHInventors: Tobias Meissner, Frank Wittrock
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Patent number: 11264738Abstract: A conductive pin configured for a quick connection system. The conductive pin has a non-conductive head and a conducting shaft with a conductive shaft bottom contact point. Beneath the head are a plurality of conducting contact arms in a X-configuration, each arm at a right angle to the next and separate to an adjacent conducting contact arm. The conducting shaft has a partial non-conductive sheath below the head. Rotating the conducting contact arms to contact points by rotating the conductive pin completes the circuit in the quick connection system.Type: GrantFiled: July 17, 2020Date of Patent: March 1, 2022Assignee: Twisted Ideas, Inc.Inventor: Reed Kimmel
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Patent number: 10505312Abstract: Methods, systems, and apparatus for reducing electrical arcing in a connector. The connector includes a pin contact having a pin tip end and a pin base end, the pin contact at the pin base end being made of a first material having a first resistance and the plug contact at the tip end being made of a second material having a second resistance greater than the first resistance. The connector also includes a socket contact configured to receive the pin contact, and the socket contact configured to establish an electrical connection with the pin contact to transfer electrical power, the second material of the pin contact configured to prevent electrical arcing by suppressing electrical voltage when the pin contact is mated or unmated from the socket contact while electrical power is being transferred.Type: GrantFiled: February 7, 2018Date of Patent: December 10, 2019Assignee: Smiths Interconnect Americas, Inc.Inventors: Richard Johannes, John Anderson
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Patent number: 10436373Abstract: The present disclosure provides an assembly including a base structure, a pinhole patch and solder. The base structure includes a body that defines a pinhole. The pinhole patch extends at least partially into and at least partially fills the pinhole. An outer surface of the pinhole patch is disposed adjacent and is mechanically joined to a pinhole surface that defines the pinhole. The solder is disposed over at least a portion of the outer surface of the pinhole patch that bonds the pinhole patch at least to the pinhole surface that defines the pinhole. A subassembly is also disclosed. The subassembly includes a pinhole patch and flux.Type: GrantFiled: March 7, 2019Date of Patent: October 8, 2019Inventor: Frank Seth Gaunce
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Patent number: 10218103Abstract: A contact stud is disclosed. The contact stud has a protector, a connection section, and a base section. The connection section is insertable into a terminal along an insertion direction. The connection section has a contact region protected by the protector from an insulative coating applied to a remainder of the connection section. The base section is mounted on a grounding surface.Type: GrantFiled: February 23, 2017Date of Patent: February 26, 2019Assignees: TE Connectivity Germany GmbH, Tyco Electronics UK LtdInventors: Rudiger Ostermann, Hartmut Ripper, Mile Trajkov, John Marsh
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Patent number: 10020098Abstract: In a production method for permanent magnet, a magnetic powder is loaded into a cavity formed in a groove shape whose longitudinal direction horizontally extends. A loading step of loading the magnetic powder includes a first loading step of loading, of the magnetic powder, a first magnetic powder containing no heavy rare earth element or containing a heavy rare earth element, and a second loading step of loading, of the magnetic powder, a second magnetic powder having a higher content rate of heavy rare earth element than that of the first magnetic powder, at a predetermined position in the cavity.Type: GrantFiled: September 5, 2013Date of Patent: July 10, 2018Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Kimiyasu Furusawa, Yoshikazu Ugai, Hiroyuki Akita
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Patent number: 10008341Abstract: A circuit breaker having a monolithic structure and method of making is disclosed. The monolithic structure includes an arm portion having copper and a contact portion having a composite material. The composite material has a metallic matrix and a second phase disposed in the metallic matrix. The method of making the monolithic structure includes introducing a first powder into a first region of a mold, introducing a second powder into a second region of the mold, and consolidating the first powder and the second powder together. The first region of the mold corresponds to a contact portion, and the second region corresponds to an arm portion of the monolithic structure of the circuit breaker.Type: GrantFiled: December 16, 2014Date of Patent: June 26, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Mohandas Nayak, Nagaveni Karkada, Shalini Thimmegowda, Mallikarjuna Heggadadevanapura Thammaiah, Janakiraman Narayanan, Linda Yvonne Jacobs
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Patent number: 9966686Abstract: A connector is disclosed. The connector has an insulation body, a conductive terminal disposed on the insulation body, and a scratching terminal disposed on the insulation body. The scratching terminal is electrically isolated from the conductive terminal. An electrical contact of a mating conductive terminal of a mating connector comes into electrical contact with the scratching terminal before electrically contacting the conductive terminal during mating with the connector.Type: GrantFiled: February 24, 2017Date of Patent: May 8, 2018Assignee: Tyco Electronics (Shanghai) Co. Ltd.Inventor: Liang Huang
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Patent number: 9948201Abstract: A module of conversion circuit includes a High side IGBT, a Low side IGBT connected in series to the High side IGBT, a first terminal connected to the High side IGBT, a second terminal connected to the Low side IGBT, a capacitor connected to the first terminal and the second terminal, and a third terminal connected to a connection point between the High side IGBT and the Low side IGBT. A fourth terminal is engaged with the first terminal. A fifth terminal is engaged with the second terminal. A sixth terminal is engaged with the third terminal. The first and second terminals have at portions thereof between front edges and rear edges high-resistance parts having higher resistance than other portions.Type: GrantFiled: February 22, 2016Date of Patent: April 17, 2018Assignee: Hitachi, Ltd.Inventors: Shinji Shirakawa, Hiroshi Kamizuma, Daisuke Matsumoto, Akira Mima, Yukio Hattori
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Patent number: 9765438Abstract: Coated articles and methods for applying coatings are described. In some cases, the coating can exhibit desirable properties and characteristics such as durability, corrosion resistance, and high conductivity. The articles may be coated, for example, using an electrodeposition process.Type: GrantFiled: February 17, 2014Date of Patent: September 19, 2017Assignee: Xtalic CorporationInventors: John Cahalen, Alan C. Lund, Christopher A. Schuh
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Patent number: 9685728Abstract: An electrical connector includes: an insulative housing having a rear base portion and a front tongue portion, said tongue portion being formed with a platform connected with the base portion; a number of terminals arranged at the tongue portion, each terminal comprising a conductive portion formed with a contacting portion for contacting with a mating connector, and a soldering portion extending outwardly of the insulative housing; at least one waterproof film extending rearwardly up to the platform; and a shielding shell enclosing the insulative housing; wherein the conductive portions of the terminals are exposed on the tongue portion to form at least one conductive region on the tongue portion covered by the at least one waterproof film.Type: GrantFiled: August 18, 2016Date of Patent: June 20, 2017Assignee: FOXCONN INTERCONNECT TECHNOLOGY LIMITEDInventors: Tao Yao, Jing-Jie Guo
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Patent number: 9660362Abstract: A device connects an electrical conductor to an area for electrical connection of an electrical switching device, the switching device having an electrical switching module connected to the area for electrical connection. The connecting device has at least one primary unit for electrically connecting a primary conductor to the area for connection, and an insulating shell receiving each primary connecting unit. The connecting device additionally has at least one secondary unit for connecting a secondary electrical conductor, and, for each secondary unit, an electrically conductive link piece connected between the secondary unit and a respective primary unit.Type: GrantFiled: November 24, 2015Date of Patent: May 23, 2017Assignee: SCHNEIDER ELECTRIC INDUSTRIES SASInventor: Christophe Grumel
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Patent number: 9638655Abstract: The invention concerns a test element analytical system for the analytical examination of a sample, especially a body fluid, comprising at least one test element with one or more measuring zones and contact areas located on the test element, in particular electrodes or conductor paths, the sample to be examined being brought into the measuring zone to carry out an analysis in order to determine a characteristic measured quantity for the analysis, and an evaluation instrument with a test element holder for positioning the test element in a measuring position and a measuring device for measuring the characteristic change, the test element holder containing contact elements with contact areas which enable an electrical contact between the contact areas of the test element and the contact areas of the test element holder, characterized in that one of these contact areas is provided with an electrically conductive hard material surface.Type: GrantFiled: January 29, 2014Date of Patent: May 2, 2017Assignee: Roche Diagnostics Operations, Inc.Inventors: Manfred Augstein, Joerg Dreibholz, Stefan Riebel
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Patent number: 9522409Abstract: An aperture plate is formed from a palladium nickel alloy comprising about 89% palladium and about 11% nickel. There is a generally fine substantially equiaxed grain microstructure throughout the thickness of the aperture plate. The average grain width (W) is in the range of from 0.2 ?m to 5.0 ?m, in some cases from 0.2 ?m to 2.0 ?m. Because the grain structure is equiaxed (L/W=1) the grain length (L) is the same as the grain width. The improved aperture plate extends the life of nebulizers, eliminates the risk of premature and unpredictable failure of a nebulizer in service, eliminates the risk of product returns from hospitals and patients, and eliminates the possible risk of fragments of the aperture plate breaking free from the nebulizer.Type: GrantFiled: December 19, 2012Date of Patent: December 20, 2016Assignee: Stamford Devices LimitedInventors: Brendan Hogan, Daniela Butan, Seamus Clifford, Michael Pomeroy, Mark Southern, David Sheil
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Publication number: 20150101920Abstract: The present disclosure provides a conductive film of a touch panel. The conductive film has a film and a plurality of a plurality of hydrophobic units. The film is used for sensing touch signals, and the hydrophobic units are disposed in the film with intervals. Conductive material of the conductive film of the touch panel is distributed outside the region of the hydrophobic units, and as the hydrophobic units have good light transmittance, the touch panel of the present disclosure has a characteristic of high light transmittance.Type: ApplicationFiled: December 17, 2014Publication date: April 16, 2015Inventors: Yuh-Wen Lee, Xianbin Xu, Keming Ruan, Fengming Lin
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Patent number: 8697247Abstract: The invention discloses a semi-finished product for making plug-in contacts in plug-in connectors for electric DC power systems in motor vehicles which are operated at a nominal voltage at which electric arcing may occur, having an electrically conductive main body made of a non-precious metallic material that carries, at least in part, a contact-making coating of a material more precious than the material of the main body. It is provided according to the invention that the coating has thickness of at least 0.3 ?m and consists of silver or of a silver-based alloy with an addition that will not form an alloy with silver or with the silver-based alloy, or will at best form a precipitation alloy, and which has a higher melting point than silver.Type: GrantFiled: April 17, 2004Date of Patent: April 15, 2014Assignee: Doduco GmbHInventors: Franz Kaspar, Joachim Ganz, Isabell Buresch
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Patent number: 8664553Abstract: A switch device includes first and second contacting portions including first and second fixed contacting portions and first and second movable contacting portions, respectively, the first fixed contacting portion and the second fixed contacting portion being configured to be electrically connected to one of a power source and an electronic device while the first movable contacting portion and the second movable contacting portion are configured to be electrically connected to the other of the power source and the electronic device; a first electric arc runner provided near at least one of the first fixed contacting portion and the first movable contacting portion; and a second electric arc runner provided near at least one of the second fixed contacting portion and the second movable contacting portion.Type: GrantFiled: July 5, 2012Date of Patent: March 4, 2014Assignee: Fujitsu Component LimitedInventors: Takashi Yuba, Daiei Iwamoto, SeungSeok Beak, Koichi Kiryu, Akio Nakamura
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Patent number: 8242394Abstract: A circuit interrupter includes a movable contact assembly having a movable contact, a stationary contact assembly, and an operating mechanism. The stationary contact assembly includes a conductor, a first stationary contact disposed on the conductor, and a second stationary contact disposed on the same such conductor proximate the first stationary contact. The first stationary contact has a first contact surface disposed a first distance from the conductor. The second stationary contact has a second contact surface disposed a second distance from the conductor. The second distance is smaller than the first distance. The operating mechanism is structured to move the movable contact assembly and cause the movable contact to engage or disengage from at least the first contact surface of the first stationary contact.Type: GrantFiled: February 12, 2010Date of Patent: August 14, 2012Assignee: Eaton CorporationInventors: Robert W. Mueller, James W. Krieger, Paul A. Merck, Amelia M. Stay, Cathleen M. Clausen, Joshua D. Myers
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Publication number: 20110083947Abstract: In an electrical switch, in particular an electrical microswitch, has at least one electrical contact designed as a hollow-shape section of a component of an electrically conducting material. In this electrical switch, the occurrence of vibrations with the introduction onto an opposing contact is prevented.Type: ApplicationFiled: December 15, 2010Publication date: April 14, 2011Inventors: Rolf Bertram, Martin Koepsell, Bruno Stenzel
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Patent number: 7589290Abstract: An electrical contact, especially an electrical contact of a plug connector, includes a metallic substrate on which a contact layer is applied in the form of a gradient layer. The gradient layer is formed by at least two elements of which one is silver and forms a matrix for the second element or forms an alloy therewith, or of which one is tin and the other is phosphorus or of which one is indium and the other is tin.Type: GrantFiled: October 2, 2003Date of Patent: September 15, 2009Assignee: Robert Bosch GmbHInventors: Peter Rehbein, Volker Haas
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Publication number: 20080308395Abstract: A switch has a case, a fixed contact, and a movable contact. The fixed contact is planted on an inner wall of the case and has a first metal layer on its surface. The movable contact is housed in the case in a movable manner, is in elastic contact with the fixed contact, and has a second metal layer on its surface. The first metal layer and the second metal layer have luster.Type: ApplicationFiled: June 17, 2008Publication date: December 18, 2008Inventor: Motoyoshi MURAKAMI
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Patent number: 7339127Abstract: A contact piece is formed by a tungsten overlay soldered onto a support, wherein at least portions of the solder layer and optionally of the support are covered by a layer of a less noble metal than tungsten. The corrosion resistance of the tungsten overlay is considerably improved.Type: GrantFiled: April 19, 2004Date of Patent: March 4, 2008Assignees: Louis Renner GmbH, Fer Fahrzeugelektrik GmbHInventors: Gerhard Renner, Udo Siefken, Martin Müller
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Patent number: 7160632Abstract: The invention provides a material for sliding contacts that is suitable for a small-sized DC motor used in recent downsized CD players and is excellent in durability. A material for sliding contacts used in a commutator of a small-sized DC motor that consists essentially of 0.01 to 3.0% Ni by weight, 0.01 to 6.0% ZnO by weight and/or 0.01 to 3.0% MgO by weight, furthermore, in some cases, 0.01 to 5.0% Cu by weight, and the balance Ag, in which Ni metal particles, ZnO particles or MgO particles are dispersed in the matrix of Ag.Type: GrantFiled: November 17, 2004Date of Patent: January 9, 2007Assignees: Mabuchi Motor Co., Ltd., Tanaka Kikinzoku kogyo K.K.Inventors: Keiji Nakamura, Yasuhiro Hashimoto, Masahiro Takahashi, Shuichi Kubota, Takao Asada, Toshiya Yamamoto
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Patent number: 6974923Abstract: A high quality electrical contact that is made of a Cd free Ag alloy and can be applied to a breaker is provided. The electrical contact is made of an Ag alloy containing Sn and In each 1 to 9% by weight, and has a first layer as the surface layer and a second layer as an internal portion. The hardness of the first layer and the hardness of the second layer are equal to or more than 190 and equal to or less than 130, respectively, based on micro Vickers standard defined by JIS. The thickness of the first layer is within the range from 10 to 360 ?m. In particular, the electrical contact has a high quality temperature characteristic as well as a high quality welding resistance characteristic.Type: GrantFiled: January 15, 2003Date of Patent: December 13, 2005Assignee: Sumitomo Electric Industries, Ltd.Inventors: Noboru Uenishi, Norihito Goma
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Patent number: 6861961Abstract: The present invention relates to a foldable alpha numeric keyboard device (2301) configured to input data items into a computer or similar processing device (2307). The keyboard device comprises a first electrically conductive fabric sheet, a second electrically conductive fabric sheet and an interface circuit configured to supply voltages to and receive outputs from said keyboard. In addition; the keyboard is configured to produce an output in response to a mechanical interaction and the interface circuit is arranged to respond to the mechanical interaction and to provide a data item to a computer or similar processing device.Type: GrantFiled: March 30, 2001Date of Patent: March 1, 2005Assignee: Electrotextiles Company LimitedInventors: David Lee Sandbach, Christopher Chapman
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Patent number: 6777631Abstract: A panel-type peripheral device including first and second conductive panel members, each panel member being provided with an insulating substrate and a conductive film applied on the insulating substrate, is produced. First, a panel assembly, including the first and second conductive panel members fixed to each other with the respective conductive films thereof oppositely facing to each other through a gap defined therebetween, is securely held between first and second support members of a panel support unit. The panel assembly held by the panel support unit is placed, together with a receptacle accommodating a liquid material, in a common environment. Next, the pressure of the common environment is reduced while a passage formed in the panel assembly to communicate with the gap is exposed to the environment, so as to evacuate the gap in the panel assembly. Then, the passage of the panel assembly is immersed in the liquid material.Type: GrantFiled: July 27, 2001Date of Patent: August 17, 2004Assignee: Fujitsu Takamisawa Component LimitedInventors: Tooru Muraoka, Sayoko Fushimi
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Patent number: 6770828Abstract: A switch assembly for use in an electrical apparatus includes a first contact having a first substrate and a first contact pad. The first contact pad is of copper or of a copper alloy. A second contact has a second substrate and a second contact pad. The second contact pad is of silver or of a silver alloy. The first contact is movably mounting relative to the second contact so that in a make position the first and second contact pads are in electrical contact with one another and in a break position the first and second contact pads are spaced from one another.Type: GrantFiled: September 24, 2001Date of Patent: August 3, 2004Assignee: Siemens Energy & Automation, Inc.Inventor: Richard G. Smith
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Patent number: 6686547Abstract: A relay is provided for a transfer mechanism which transfers power between a utility source and a stand-by electrical generator. The relay incorporates contacts formed from two distinct materials. A backing portion of each contact is formed from copper and a contacting portion is deposited on the backing portion. The contacting portion is formed from tungsten. The arrangement of the contact minimizes the potential for failure of the transfer mechanism when the transfer mechanism is exposed to significant current and/or heating during operation thereof.Type: GrantFiled: January 29, 2001Date of Patent: February 3, 2004Assignee: Generac Power Systems, Inc.Inventors: Robert D. Kern, Gerald C. Ruehlow, Francis X. Wedel, Jeffrey J. Jonas
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Patent number: 6590177Abstract: A pressure sensitive sensor is composed of a pair of upper and lower electrodes sheets 1 and 2 disposed oppositely, a spacer 3 interposed between both of the sheets 1 and 2, and adhesives 4 and 5 between these electrode sheets 1 and 2 and spacer 3. In the spacer 3, a hole 31 is formed in a position of a contact portion 6. A diameter of this hole 31, convex portions 13 and a pressure sensitive electrode 22 are set in such a positional relationship that a peripheral portion of the hole 31 is overlapped between the convex portions 13 and the pressure sensitive electrode 22. Then, the adhesives 4 and 5 open more largely than the diameter of the hole 31 of the spacer 3 so as to be removed from the peripheral portion of the hole 31 on both surfaces of the spacer 3.Type: GrantFiled: June 3, 2002Date of Patent: July 8, 2003Assignees: Fujikura Ltd., Aisin Seiki Kabushiki KaishaInventors: Katsuhiko Takahashi, Takayuki Imai, Toshio Ochiai, Toshifumi Nakajima, Koji Ito, Kazuya Tanaka
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Patent number: 6281780Abstract: An electric apparatus (10) according to the present invention comprises electrically separated first and second terminals (14, 13), a first contact (16) that is connected electrically to the first terminal (14) within a casing (11), a second contact (15) that is connected electrically to the second terminal (13) within the casing and an operating member (20) for moving the first and second contacts relative to one another. In the present invention, at least the first contact (16) comprises a first conductive layer (41) with a given thickness including a face that is engageable with the second contact, a second conductive layer (42) that is connected to the first terminal (14), and insulating fiber (43) that is interposed between the first and second layers so that the above-mentioned second contact is engaged in the closing contacts movement by the insulating fiber when it is exposed by wear of the first layer (41) due to opening and closing movements of above mentioned contacts.Type: GrantFiled: April 26, 2000Date of Patent: August 28, 2001Assignee: Texas Instruments IncorporatedInventors: Akitsugu Sugiyama, Kouzoh Nagano, Harumi Kitada
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Patent number: 6248964Abstract: A switching element, specifically an encoder element, is fabricated by forming a conductive track on an insulative substrate, and then screen printing an insulative layer on the track in a predetermined pattern that forms a contact array that comprises a plurality of conductive contacts separated by nonconductive areas. The substrate may be a polymeric resin, and the track comprises (a) a copper base layer formed on a surface of the substrate in the configuration of the track, (b) a first metal-plated layer, preferably of nickel, on the base layer, and (c) a second metal-plated layer, preferably of gold, on the first metal-plated layer. The insulative layer is formed of a thick film dielectric material comprising a difunctional monomer (e.g., diallyl isophthalate), a glycol ether ester (e.g., ethylene glycol monobutyl ether acetate), an inorganic filler (e.g., BaSO4), and an acetate surface modifier (e.g., an ethyl acrylate/ethylhexylacrylate copolymer).Type: GrantFiled: April 7, 1999Date of Patent: June 19, 2001Assignee: Bourns, Inc.Inventors: Craig R. Bailey, Richard E. Riley, Geary Green, Stephen J. Waszak
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Patent number: 6156982Abstract: A low ampere mechanical switch has a contact design creating a line of contact between the moveable and stationary contacts. The stationary contacts are stainless steel and the moveable contact is Inconel.TM.. Both contacts have a thin plating of gold alloy to provide for good mechanical strength at high temperature with a natural lubricating ability. The contact physical design provides good wiping action and mechanical contact while preventing troughing.Type: GrantFiled: September 24, 1999Date of Patent: December 5, 2000Assignee: Honeywell Inc.Inventor: Arthur Wayne Dawson
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Patent number: 6133537Abstract: The present invention provides an electric contact structure comprising a first contact surface and a second contact surface, wherein at least one of the first and second contact surfaces comprises an AuAgPd alloy including 7-16% by weight of Ag and 1-10% by weight of Pd, whereby a high anti-adhesion property and a highly stable contact resistance can be obtained particularly when the electric contacts are in non-operating state.Type: GrantFiled: March 23, 2000Date of Patent: October 17, 2000Assignee: NEC CorporationInventors: Tokiichi Onodera, Matsujirou Ikeda
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Patent number: 6054664Abstract: A membrane switch that suppresses the growth, or migration, of metallic ion crystals caused by condensation. First and second metallic conductive layers are provided on an inside of the first and second resin film, respectively. First and second non-metallic conductive layers cover the first and second metallic conductive layers, respectively. A spacer separates the first and second metallic conductive layers and includes an inner wall that, together with the first and second metallic conductive layers, defines a spacer cavity. At least one of the first and second metallic conductive layers is located a prescribed distance from the spacer inner wall, as the spacer inner wall provides a pathway for the metallic ion crystal migration.Type: GrantFiled: February 8, 1999Date of Patent: April 25, 2000Assignee: Denso CorporationInventors: Katsuhiko Ariga, Takaaki Yamamoto
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Patent number: 6034335Abstract: Analog resistance touch switches and matrix type touch switches have contacts coated with a very thin film, which in use does not form an appreciable amount of an insulating oxide, to inhibit changes in contact resistance and extend operating life.Type: GrantFiled: July 1, 1994Date of Patent: March 7, 2000Assignee: Dynapro Thin Films ProductsInventors: Brian E. Aufderheide, Michael J. Robrecht
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Patent number: 5973283Abstract: A membrane switch having a pair of flexible printed boards and a pair of contacts respectively disposed on said printed boards. The contacts are formed of powdered alloy of silver and palladium bounded by resinous material, and a conductive layer of silver powder is disposed between the flexible printed board and the contact. Preferably, the powdered alloy contains 50-97 weight percent silver and palladium in the remainder of weight percent.Type: GrantFiled: May 27, 1998Date of Patent: October 26, 1999Assignees: Denso Corporation, Hokuriku Electric Industry Co., Ltd.Inventors: Katsuhiko Ariga, Masayasu Teraoka, Yoshimitsu Motoki, Tetsushi Yokoe, Ichirou Ishiyama
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Patent number: 5860513Abstract: A material for forming contact members of a control switch, which has a structure including a primary layer made of Ni, Co, a Ni alloy or a Co alloy formed on a conductive base, and a surface layer made of Pd or a Pd alloy having a thickness of 0.001 to 0.4 .mu.m which is formed on the primary layer. Such material exhibits good resistance to corrosion and adhesive wear. A control switch which is made using such material has a high operational reliability and a long service life.Type: GrantFiled: June 2, 1997Date of Patent: January 19, 1999Assignee: The Furukawa Electric Co., Ltd.Inventor: Satoshi Suzuki
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Patent number: 5799771Abstract: A contact includes a silver contact base, an intermediate silver layer and a solder in the form of a platelet being provisionally fastened or tacked to the intermediate silver layer prior to an actual soldering operation. The silver contact base is soldered onto a contact carrier by the intermediate silver layer and the solder platelet. A method for making a contact includes pressing an intermediate silver layer onto a silver contact base, then provisionally fastening or tacking a solder in the form of a platelet to the intermediate silver layer and subsequently placing a contact carrier on the solder platelet and soldering the contact carrier to the solder platelet.Type: GrantFiled: November 12, 1996Date of Patent: September 1, 1998Assignee: Siemens AktiengesellschaftInventors: Manfred Schneider, Dietmar Clauss
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Patent number: 5598629Abstract: A contact includes a silver contact base, an intermediate silver layer and a solder in the form of a platelet being provisionally fastened or tacked to the intermediate silver layer prior to an actual soldering operation. The silver contact base is soldered onto a contact carrier by the intermediate silver layer and the solder platelet. A method for making a contact includes pressing an intermediate silver layer onto a silver contact base, then provisionally fastening or tacking a solder in the form of a platelet to the intermediate silver layer and subsequently placing a contact carrier on the solder platelet and soldering the contact carrier to the solder platelet.Type: GrantFiled: June 6, 1994Date of Patent: February 4, 1997Assignee: Siemens AktiengesellschaftInventors: Manfred Schneider, Dietmar Clauss
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Patent number: 5597064Abstract: The present invention provides inexpensive electric contact materials having higher hardness and higher melting point and being more excellent in the points of wear resistance and environmental resistance over the electric contact materials of Ag type, Au type, platinum group type, etc. having been used so far, production methods thereof and electric contacts used said contact materials.In the electric contact materials of the invention, basically, a covering layer having at least one selected from transition metals of groups IVa (Ti, Zr, Hf, etc.), Va (V, Nb, Ta, etc.) and VIa (Cr, Mo, W, etc.) as a major ingredient is formed on the substrate as an electric contact in a thickness of 0.03 to 100 .mu.m, and, if need be, a fixed intermediate layer is formed between said covering layer of electric contact and substrate or a fixed surface layer is formed on the outside of covering layer of electric contact, thus aiming at further improvement in the characteristics of contact.Type: GrantFiled: December 21, 1990Date of Patent: January 28, 1997Assignee: The Furukawa Electric Co., Ltd.Inventors: Masanori Ozaki, Keiji Mashimo
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Patent number: 5520323Abstract: Contacts such as contact points, contact strips, or contact sections are usually provided with hard solder on a copper-silver basis in the form of a flat solder layer. The contact is then connected over this solder layer with a contact carrier. The solder layer is melted, whereupon the free surface of the solder layer (13, 130) is covered during melting with a material (1, 5, 15) that has no solubility with silver or copper. The material can, during melting of the solder, form a covering (1, 15) beneath the contact (10, 12, 100) provided on its solder side with the solder layer (13, 130) or can also form a covering over the contact (10, 12, 100) provided on its solder side with the solder layer (13, 130). As materials for covering the solder layer (13, 130), high-melting metals, preferably tantalum, or a ceramic are used.Type: GrantFiled: June 20, 1994Date of Patent: May 28, 1996Assignee: Siemens AktiengesellschaftInventors: Franz Hauner, Manfred Schneider
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Patent number: 5442929Abstract: The useful life of electrical contacts is extended by a cryogenic treatment. An electrical contact is exposed to a low temperature, such as below 172 K for a selected period of time. The low temperature may be obtained via a controlled rate of cooling. After the contact has been exposed to the low temperature, the contact may be returned to ambient temperature at a controlled rate. The cryogenic treatment results in extended useful life of contacts made of materials such as copper and of composite contacts incorporating silver, refractory metals, and metal oxides such as cadmium oxide and tin oxide.Type: GrantFiled: July 22, 1993Date of Patent: August 22, 1995Assignee: Repco Inc.Inventor: James P. Gillin
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Patent number: 5409762Abstract: The present invention provides inexpensive electric contact materials having higher hardness and higher melting point and being more excellent in the points of wear resistance and environmental resistance over the electric contact materials of Ag type, Au type, platinum group type, etc. having been used so far, production methods thereof and electric contacts used said contact materials.In the electric contact materials of the invention, basically, a covering layer having at least one selected from transition metals of groups IVa (Ti, Zr, Hf, etc.), Va (V, Nb, Ta, etc.) and VIa (Cr, Mo, W, etc.) as a major ingredient is formed on the substrate as an electric contact in a thickness of 0.03 to 100 .mu.m, and, if need be, a fixed intermediate layer is formed between said covering layer of electric contact and substrate or a fixed surface layer is formed on the outside of covering layer of electric contact, thus aiming at further improvement in the characteristics of contact.Type: GrantFiled: March 29, 1993Date of Patent: April 25, 1995Assignee: The Furukawa Electric Company, Ltd.Inventors: Masanori Ozaki, Keiji Mashimo
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Patent number: 5330088Abstract: A layer selected from a group comprising: molybdenum, tantalum, tungsten, osmium, rhenium, ruthenium and an alloy of two or more thereof on the under surface of an electrical contact acts as a barrier to copper diffusion from the braze material into the contact structure. A thin nickel layer on the barrier facilitates the brazing of the barrier coated contact surface to the copper electrodes.Type: GrantFiled: April 30, 1993Date of Patent: July 19, 1994Assignee: Eaton CorporationInventors: Graham A. Whitlow, Carl B. Freidhoff, Philip E. Carpentier, Paul O. Wayland
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Patent number: 5272295Abstract: An electric contact is provided on at least one of a pair of conductors and includes a surface which is coated with a ceramic layer comprising at least one material selected from the group consisting of nitrides, carbides and borides of high melting point metals, this electric contact having a low contact resistance and good reliability.Type: GrantFiled: January 23, 1992Date of Patent: December 21, 1993Assignees: Sumitomo Electric Industries, Ltd., Sumitomo Wiring Systems, Ltd.Inventors: Kazuo Sawada, Atsushi Nakamura, Isao Okugawa
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Patent number: 5258591Abstract: An apparatus is disclosed for providing an electrostatically actuated mechanical switch utilizing a cantilever beam element fabricated by solid-state microfabrication techniques. The apparatus reduces the required pull down voltage and lowers the switch inductance by separating the pull down electrode and contact pad. The pull down electrode is placed further away from the fulcrum of the cantilever beam then the contact pad to optimize the mechanical advantages which allow for a reduced pull down voltage. The contact pad is placed closer to the cantilever fulcrum to reduce the associated switch inductance. The gap between the contact pad and the cantilever beam is less then the gap between the pull down electrode and the cantilever beam to insure that the cantilever makes first contact with the contact pad.Type: GrantFiled: October 18, 1991Date of Patent: November 2, 1993Assignee: Westinghouse Electric Corp.Inventor: Daniel C. Buck
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Patent number: 5179460Abstract: An input structure for a display device having opposed substrates an electrodes disposed on the inner surfaces of the substrates and a seal about the periphery thereof with a relay electrode crossing the seal to connect the electrodes on the opposed substrate to external circuitry. The electrical connection between the electrodes on the first substrate to the relay electrode is provided by a conductive adhesive electrode and a conductive synthetic resin thin film layer contacting the conductive adhesive electrode, the thin film layer formed of conductive material which is shorter than the conductive material of the conductive adhesive electrode to absorb shock and avoid separation of the electrodes from the opposed substrate.Type: GrantFiled: May 31, 1990Date of Patent: January 12, 1993Assignee: Seiko Epson CorporationInventors: Shoji Hinata, Yohichi Ono, Satoshi Wakabayashi
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Patent number: 5140114Abstract: An electric contact with a base metal used as a switch wherein the non-welded peripheral portion of the contact is prevented from bow-like bending and from peeling off. The electric contact with a base metal having a contact promoting shape is formed by die forging of a contact material joined to the base metal by resistance welding. The composite contact material is prepared by coating the core material of Ag-oxide contact material with non-oxide contact material. The side of the material in contact with the base metal is of non-oxide contact material. The contact material may be pressed to fill a groove preformed in the base metal, welded to protrusions preformed in the base metal, welded to the bottom of a cut preformed in the base metal, or welded to bottoms of recesses preformed in the base metal.Type: GrantFiled: April 2, 1991Date of Patent: August 18, 1992Assignees: Fuji Electric Co., Ltd., Tokuriki Honten Co., Ltd.Inventors: Mitsuo Sunaga, Kiyoshi Sekiguchi, Hisaji Shinohara, Akihiro Takahashi, Hiroshi Hikita, Takashi Nara, Sadao Sato
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Patent number: RE34484Abstract: Gold-plated electronic components are disclosed, as well as a process for producing the same, wherein an alloy of nickel and cobalt or an alloy containing these elements as essential ingredients is used as an undercoat for the gold-plated layer.Type: GrantFiled: November 29, 1991Date of Patent: December 21, 1993Assignee: NGK Spark Plug Co., Ltd.Inventors: Teruyoshi Nagashima, Akio Takami, Akiyo Kasugai