Contact Making Surface (e.g., Grooved) Patents (Class 200/279)
  • Patent number: 10269508
    Abstract: Electrical contact system with a first and a second contact (1, 5), each having a contact surface (4, 8). The first electric contact (1) has a mesostructured electric contact portion (14) with a plurality of slots (15) and ridges (16) formed between neighboring slots (16) of the plurality of slots (16). These slots (15) and ridges (16) extend in a direction running transversely to said switching plane (X-Z) form a plurality of current paths (16). The current paths (16) are inclined to the first contact surface (4) at a first angle (17) measuring less than 60 degrees such that an interruption current (12) flowing through the mesostructured electric contact portion (14) and through an electric arc (11) extending in between the first contact surface (4) after lifting the first contact surface (4) off the second contact surface (8) pushes said electric arc (11) in the direction of the apex of said first angle (17) from a first position (18) to a second position (19).
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: April 23, 2019
    Assignee: ABB Schweiz AG
    Inventors: Reinhard Simon, Erik Johansson, Göran Eriksson, Moritz Boehm, Gunnar Johansson
  • Patent number: 10096434
    Abstract: An electrical contact component and a method for the production thereof. The contact component has a sintered contact element and a contact carrier cast onto the contact element. The grains of the contact element are oriented in a preferential direction.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: October 9, 2018
    Assignee: Plansee Powertech AG
    Inventor: Claudia Kowanda
  • Patent number: 10026570
    Abstract: A vacuum valve according to embodiments of the present disclosure, comprising: an electrode having a first surface which a hollow part is formed on, which electrode spiral electrode slits which slantingly cross an axial direction are formed on outer circumference of, a conductor fixed on a second surface of the electrode, which second surface is opposite side of the first surface, a contact point having a first concavity which opens to the conductor side, which contact point is fixed on the first surface of the electrode, and a connecting plate whose resistivity is lower than one of the contact point, which connecting plate is disposed inside the first concavity, and connecting plate slits which extend inward from circumference as a starting point are formed on, wherein central axes of the connecting plate slits incline in a rotatory direction of the spiral of the electrode slits.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: July 17, 2018
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshimitsu Niwa, Wataru Sakaguchi, Yuki Sekimori
  • Patent number: 9905377
    Abstract: The invention relates to a circuit breaker comprising a first and a second contact assembly, wherein one of the contact assemblies comprises contact fingers arranged in a finger cage configuration and the other contact assembly comprises a tube or rod contact. The contact fingers comprise an impact point where the tube or rod impacts the contact fingers for the first time during electrical connection establishment, and a contact zone which contacts the tube or rod when the electrical connection is established. The contact zone comprises two contact points separated from one another and arranged on a line which is perpendicular to the longitudinal axis.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: February 27, 2018
    Assignee: ABB Schweiz AG
    Inventors: Francesco Pisu, Fredrik Lundqvist, Jakub Korbel, Johan Costyson, Kansara Krunal, Mattias Runnberg, Sami Kotilainen, Raphael Rijo-Rude
  • Patent number: 9859624
    Abstract: An electrical connector assembly includes a first electrically conductive contact member and a second electrically conductive contact member. Both contact members have non-planar interface surfaces. The second interface surface is complimentary to the first interface surface. The first interface surface may include a plurality of elongated first ridges and a plurality of elongated first valleys, and the second interface surface may include a plurality of elongated second ridges and a plurality of elongated second valleys. A first ridge is received by a second valley and a second ridge is received by a first valley.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: January 2, 2018
    Assignee: DEERE & COMPANY
    Inventors: Thomas Roan, Brij N. Singh, Andrew D. Wieland
  • Patent number: 9679723
    Abstract: A contact assembly for a vacuum switching apparatus includes a contact member and a reinforcing member adapted to structurally reinforce the contact member. The contact member includes first and second opposing sides, and a contact thickness. The reinforcing member has a reinforcement thickness, which is less than the contact thickness. The contact member is made from a first material having a first coefficient of thermal expansion, and the reinforcing member is made from a second different material having a second coefficient of thermal expansion. The first coefficient of thermal expansion is substantially the same as the second coefficient of thermal expansion.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: June 13, 2017
    Assignee: EATON CORPORATION
    Inventors: Louis G. Campbell, Benjamin A. Rosenkrans, Stephen D. Mayo
  • Patent number: 9613769
    Abstract: An exemplary vacuum interrupter for a circuit breaker arrangement including a cylindrically shaped insulating part, within which a pair of electrical contact parts are coaxially arranged and surrounded concentrically by the insulating part. The electrical contact parts can be configured to initiate a disconnection arc only between corresponding inner contact elements after starting a disconnection process, and corresponding outer contact elements can be configured to commutate the arc from the inner contact elements to the outer contact elements until the disconnection process is completed, wherein each inner electrical contact element is designed as a TMF-like contact element for generating mainly a transverse magnetic field, and each outer electrical contact element is designed as an AMF-like contact element for generating mainly an axial magnetic field.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: April 4, 2017
    Assignee: ABB Schweiz AG
    Inventors: Dietmar Gentsch, Thierry Delachaux, Tarek Lamara
  • Patent number: 9478371
    Abstract: An electrical switch and a flashlight employing the switch may comprise a base having three electrical conductors thereon and an electrically conductive flexible dome adjacent the base. The flexible dome has plural longer legs extending from its dome and in electrical contact with a first conductor, has a shorter leg extending from its dome and overlying a second conductor, and has its dome overlying a third conductor. A spring may extend from the base of the switch. A pushbutton may be moved to apply sufficient force to cause the shorter leg to contact the second conductor and the dome to contact the third conductor. A spring may be between the pushbutton and the flexible dome to couple force to the flexible dome.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: October 25, 2016
    Assignee: STREAMLIGHT, INC.
    Inventors: Raymond L Sharrah, Peter J Ziegenfuss, Mark W Snyder
  • Patent number: 9099262
    Abstract: In a vehicle push button switch, movement of a push button is guided by multiple guide portions and backlash of the push button during a push operation thereof is thereby prevented, and operations of the push button are not hindered even when water attached to an outer surface of a bar-shaped portion of the push button freezes. The case is provided with a plurality of guide portions spaced away from each other in a peripheral direction of the bar-shaped portion to guide a plurality of sections of the bar-shaped portion that are located in the peripheral direction, and an ice scraping rib protrudes from an outer surface of the bar-shaped portion. The ice scraping rib scraps away a frozen ice portion formed by freezing of water attached to the outer surface of the bar-shaped portion between the plurality of guide portions, in response to movement of the bar-shaped portion.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: August 4, 2015
    Assignee: Kabushiki Kaisha Honda Lock
    Inventor: Yuuichi Satou
  • Publication number: 20150014131
    Abstract: An electric switching device includes first and second switch contact pieces. The first switch contact piece has a guide portion. The first switch contact piece is connected to an actuating unit or drive device by a kinematic chain. The guide portion of the first switch contact piece is guided on a guide path. The guide portion and the guide path each have a contact or bearing surface and at least one of the contact or bearing surfaces is convexly curved.
    Type: Application
    Filed: December 18, 2012
    Publication date: January 15, 2015
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Joachim Gericke, Robert Gruenler, Martin Krehnke, Volker Lehmann, Friedrich Loebner
  • Publication number: 20140262709
    Abstract: A terminal includes a fastener; a conductor member having a plurality of protrusions on a surface thereof facing the fastener; and a collar member. The collar member includes first, second, third and fourth surfaces, a tapped opening on the first surface engaging the fastener, and a conduit between the second and third surfaces. The tapped opening intersects and coincides with the conduit and is normal thereto. The fourth surface is opposite the first surface and contains another opening that intersects and coincides with the conduit. The other opening receives the conductor member. The protrusions and the surface of the conductor member are structured to engage a stranded conductor having a plurality of individual solid conductors. The fastener is structured to engage the stranded conductor.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicant: EATON CORPORATION
    Inventors: ROGER W. HELMS, James G. Maloney
  • Patent number: 8835782
    Abstract: A contact arm assembly (10) for a switchgear circuit breaker includes a contact arm (11) having a groove (42) in an outer periphery surface thereof. At least one contact finger (13) has a body (38) and a ball member (40) extending from the body. The ball member is received in the groove so that the contact finger makes contact with the contact arm. The contact arm includes a shaft (14) having a longitudinal axis, first and second ends (18, 28), and a constant outside diameter. A plurality of annular rings (16) extends from the outside diameter of the shaft. The rings are spaced along the longitudinal axis to define cooling fins. Diameters of the rings gradually decrease from the first end to generally the center of the shaft, and then gradually increase to the second end of the shaft.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: September 16, 2014
    Assignee: ABB Technology AG
    Inventors: Patrick R. Fischer-Carne, Robert S. Karnbach, Rahul Pawar
  • Publication number: 20140158507
    Abstract: The touch panel according to a preferred embodiment of the present invention includes: a transparent substrate having one surface on which a first groove portion is formed and the other surface on which a second groove portion is formed; a first electrode formed on one surface of the transparent substrate so as to cross the first groove portion; and a second electrode formed on the other surface of the transparent substrate so as to cross the second groove portion.
    Type: Application
    Filed: February 28, 2013
    Publication date: June 12, 2014
    Applicant: Sumsung Electro-Mechanics Co., Ltd.
    Inventors: Sung Yeol Park, Suk Jin Ham, Jung Tae Park, Seung Heon Han, Jung Eun Noh
  • Publication number: 20140116863
    Abstract: Disclosed herein are a touch panel including: a transparent substrate; an interface layer formed on one surface of the transparent substrate; and a metal mesh type electrode pattern formed on the interface layer, and a method of manufacturing the same. In the case in which the interface layer is formed on the transparent substrate, a mirror surface property of the interface is decreased, thereby making it possible to provide a black oxidation property in which reflectivity of a bonded interface and a color feeling unique to a metal are decreased. Therefore, visibility of the electrode pattern is decreased to suppress a phenomenon that the electrode pattern is viewed by user's eyes, such that visibility of the touch panel is improved, thereby making it possible to improve quality of the touch panel.
    Type: Application
    Filed: February 6, 2013
    Publication date: May 1, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Woo Jin Lee, Da Mi Shin, Jung Wook Seo
  • Patent number: 8500347
    Abstract: The present disclosure provides a keyboard. The keyboard includes a number of buttons set on a pedestal. The pedestal includes a number of resisting members and a number of returning members. Each of the resisting members is arranged between two of the buttons, the inclined sidewalls of each of the resisting members is capable of respectively engaging with the buttons adjacent to the resisting member, each of the returning members corresponding to one of the resisting members returns the corresponding resisting member to its original state after the movement. When a button is pressed, the depressed button drives the adjacent resisting members to the point under the adjacent buttons to stop the adjacent buttons being depressed.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: August 6, 2013
    Assignees: Fu Tai Hua Industry (Shenzhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventor: Shuai Zhang
  • Publication number: 20130075238
    Abstract: A contact arm assembly (10) for a switchgear circuit breaker includes a contact arm (11) having a groove (42) in an outer periphery surface thereof. At least one contact finger (13) has a body (38) and a ball member (40) extending from the body. The ball member is received in the groove so that the contact finger makes contact with the contact arm. The contact arm includes a shaft (14) having a longitudinal axis, first and second ends (18, 28), and a constant outside diameter. A plurality of annular rings (16) extends from the outside diameter of the shaft. The rings are spaced along the longitudinal axis to define cooling fins. Diameters of the rings gradually decrease from the first end to generally the center of the shaft, and then gradually increase to the second end of the shaft.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 28, 2013
    Applicant: ABB TECHNOLOGY AG
    Inventors: Patrick R. Fischer-Carne, Robert S. Karnbach, Rahul Pawar
  • Patent number: 8294057
    Abstract: An object of the invention is to provide a vacuum switch which can achieve a reduction of an electric loss and an improvement of a heat transmission performance by preventing an air gap portion from being generated between an electrode and a conductor rod and preventing the electrode and the conductor rod from generating any positional displacement. An electrode for a switch in accordance with the invention is provided with the conductor rod, a contact point electrode inserted to the conductor rod, and a coupling plate fixing both the elements to an outer side in a diametrical direction of the conductor rod and the contact point electrode, thereby fixing both the elements.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: October 23, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Miki Yamazaki, Kenji Tsuchiya, Ayumu Morita, Masato Kobayashi, Shuichi Kikukawa, Shigeru Kikuchi
  • Patent number: 8188392
    Abstract: A contactor has two contact elements (1, 2) each having a contact member (3, 4) adapted to bear with the contact side (5, 6) thereof against a said contact side of the other contact member for enabling an electric current to flow between said to contact elements. The contact sides of both contact members are provided with serration's (11, 12) extending so that elongated ridge-like peaks (13) of serration's of one said contact side intersect such peaks of the other said contact side while forming a plurality of spots of mutual contact of these contact sides distributed over the area of said contact sides.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: May 29, 2012
    Assignee: ABB AB
    Inventors: Peter Isberg, Joachim Glatz-Reichenbach, Mats M Johansson, Krister Linnarud, Lars X Eriksson
  • Publication number: 20110315530
    Abstract: A switch assembly provides a pressing plate on a pivot contact lever to minimize heat generation at the point between the pivot contact lever and the contact point by providing an additional parallel connection contact plate which is in parallel connection to the pivot contact lever. The switch assembly provides convex contact portions on the internal output ports of the forward/reverse switch mechanism. A supplementary elastic metal plate to the pivot contact lever is provided to solve the problem of loose contact at the pivot connection site where the pivot contact lever and the support unit meet, and provides a supplementary contact unit to the movable contact device at the forward/reverse switch mechanism.
    Type: Application
    Filed: March 4, 2010
    Publication date: December 29, 2011
    Applicant: SHANGHAI BAICHENG ELECTRIC EQUIPMENT MANUFACTURE CO., LTD.
    Inventor: Xinsheng Xu
  • Publication number: 20110073567
    Abstract: An object of the invention is to provide a vacuum switch which can achieve a reduction of an electric loss and an improvement of a heat transmission performance by preventing an air gap portion from being generated between an electrode and a conductor rod and preventing the electrode and the conductor rod from generating any positional displacement. An electrode for a switch in accordance with the invention is provided with the conductor rod, a contact point electrode inserted to the conductor rod, and a coupling plate fixing both the elements to an outer side in a diametrical direction of the conductor rod and the contact point electrode, thereby fixing both the elements.
    Type: Application
    Filed: August 16, 2010
    Publication date: March 31, 2011
    Applicant: Hitachi, Ltd.
    Inventors: Miki YAMAZAKI, Kenji Tsuchiya, Ayumu Morita, Masato Kobayashi, Shuichi Kikukawa, Shigeru Kikuchi
  • Patent number: 7767921
    Abstract: The invention relates to a circuit breaker for electric supply lines, in particular energy lines or battery cables of motor vehicles. Said circuit breaker comprises a first connection element (2) and a second connection element (4), the current path running between the first connection element (2) and the second connection element (4), when the circuit breaker (6) is in a conductive state. The aim of the invention is to provide a cost-effective, fail-safe circuit breaker. To achieve this, the first connection element (2) comprises a cavity (8) and the second connection element (4) is configured from an electrically conductive flat part and the second connection element (4) has a projection (10) that corresponds to the shape of the cavity (8), in such a way that in the conductive state of the circuit breaker (1), the projection (10) rests in the cavity (8) in a non-positive fit.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: August 3, 2010
    Assignee: Auto Kabel Managementgesellschaft mbH
    Inventors: Martin Schloms, Franz-Josef Lietz, Uwe Glasenapp
  • Publication number: 20090272636
    Abstract: A contactor has two contact elements (1, 2) each having a contact member (3, 4) adapted to bear with the contact side (5, 6) thereof against a said contact side of the other contact member for enabling an electric current to flow between said to contact elements. The contact sides of both contact members are provided with serration's (11, 12) extending so that elongated ridge-like peaks (13) of serration's of one said contact side intersect such peaks of the other said contact side while forming a plurality of spots of mutual contact of these contact sides distributed over the area of said contact sides.
    Type: Application
    Filed: March 23, 2007
    Publication date: November 5, 2009
    Inventors: Peter Isberg, Joachim Glatz-Reichenbach, Mats M. Johansson, Krister Linnarud, Lars X. Eriksson
  • Publication number: 20080197001
    Abstract: The invention relates to a circuit breaker for electric supply lines, in particular energy lines or battery cables of motor vehicles. Said circuit breaker comprises a first connection element (2) and a second connection element (4), the current path running between the first connection element (2) and the second connection element (4), when the circuit breaker (6) is in a conductive state. The aim of the invention is to provide a cost-effective, fail-safe circuit breaker. To achieve this, the first connection element (2) comprises a cavity (8) and the second connection element (4) is configured from an electrically conductive flat part and the second connection element (4) has a projection (10) that corresponds to the shape of the cavity (8), in such a way that in the conductive state of the circuit breaker (1), the projection (10) rests in the cavity (8) in a non-positive fit.
    Type: Application
    Filed: March 22, 2006
    Publication date: August 21, 2008
    Applicant: AUTO KABEL MANAGEMENTGESELLSCHAFT MBH
    Inventors: Martin Schloms, Franz-Josef Lietz, Uwe Glasenapp
  • Patent number: 7365280
    Abstract: A switch provided with a fixed contact and a movable contact coming into contact with each other and separating from each other. The surface of at least one of the fixed contact and the movable contact is provided with a plurality of recesses whose edges are overlapped with each other, and also provided with a plurality of projections. The projections formed on the contact surface have sharp-pointed tips which can break an oxide film or the like if it is formed on the contact surface, thereby achieving stable contact.
    Type: Grant
    Filed: October 19, 2005
    Date of Patent: April 29, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hisashi Nishikawa, Hiroyuki Kosaka, Yoshiyuki Nakade, Takao Matsui, Tetsuya Koma, Makoto Nagahara, Hiroyuki Takeshita
  • Patent number: 7309251
    Abstract: A groove is formed on a connecting section surface of an electrically conductive terminal, this groove is subjected to a bending deformation into a convex shape toward the surface side from the backside of a connecting section to form a bent convex section on the surface of the connecting terminal, and edge sections formed on both sides of this groove are positioned on the surface of the bent convex section. When joined to a counterpart connecting section, the groove edge sections are displaced to approach one another to provide a wiping effect on the surface of the counterpart connecting section.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: December 18, 2007
    Assignee: I-PEX Co. Ltd.
    Inventor: Kenji Narita
  • Patent number: 6887113
    Abstract: It is difficult to transmit large processing current on the surfaces of printed circuit boards (L) using clamp-type contact organs (6, 7). In order to solve said problem, contact elements (15, 16) having one or more contact surfaces (26) are disposed on the contact organs (6, 7). The shape of the contact surfaces (26) are configured in such a way that no damages occur in the areas of the conductive surfaces adjacent to the contact surfaces (26) when large currents are transmitted from the contact elements (15, 16) printed on the electrically conductive surface of printed board material (L) on the contact surfaces to the conductive surface.
    Type: Grant
    Filed: July 13, 1999
    Date of Patent: May 3, 2005
    Assignee: Atotech Deutschland GmbH
    Inventor: Peter Langheinrich
  • Patent number: 6692841
    Abstract: A friction welded joint structure includes friction welded dissimilar first and second metallic materials. The first metallic material has a rigidity greater than the second metallic material. The angle of the first metallic material to a free edge of the first metallic material, at an end portion of a joined surface between the first and second metallic materials, is greater than or equal to 120 degrees or in the range of from 55 degrees to 85 degrees. A reaction layer between the first and second metallic materials is more than zero and less than or equal to 20 &mgr;m. The first metallic material is copper. The second, which has the smaller rigidity, is aluminum.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: February 17, 2004
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takahiko Shindo, Yoshiyasu Itoh, Katsumi Suzuki
  • Patent number: 6600115
    Abstract: A rod (40) is pivotally provided in a lever (28). The rod (40) is divided into a small-diameter lower rod (37) and a large-diameter upper rod (38). When a knob (45) is pivotally moved, the lower rod (37) and the upper rod (38) are moved in an integrated fashion. A movable contact (31) is slid by means of movement of a pusher (57) of the lower rod (37). In this case, the rigidity of the upper rod (38) is improved, and hence the upper rod (38) becomes less susceptible to deflection induced by the load of the spring (53). Accordingly, inclination of the knob (45) toward the lever (28) is prevented, and hence a clearance between the lever (28) and the knob (45) can be maintained constant by means of a single set consisting of a spring (53) and a moderation ball (54).
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: July 29, 2003
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventor: Hirofumi Hayashi
  • Publication number: 20030066743
    Abstract: In a contact arrangement and a vacuum interrupter using the contact arrangement, the contact arrangement includes: a hollow cylindrical contact carrier on one end surface of which a contact plate is attached; a plurality of first slits formed on the contact carrier from the one end surface of the contact carrier; and a plurality of second slits formed on the contact carrier from each predetermined point of midway through an axial direction of the contact carrier, each of the first and second slits being tilted with respect to the axial direction of the contact carrier, a coil portion being formed on a portion of the hollow cylindrical contact carrier between each of the first and second slits and an adjacent one of the first and second slits and a longitudinal magnetic field being formed along the axial direction of the contact carrier by a current flowing on the coil portion.
    Type: Application
    Filed: September 11, 2002
    Publication date: April 10, 2003
    Applicant: KABUSHIKI KAISHA MEIDENSHA
    Inventors: Akira Nishijima, Hidemitsu Takebuchi, Yoshihiko Matsui
  • Patent number: 6486423
    Abstract: A sliding contact mechanism includes a sliding door contact, a spring having one end connected to the sliding door contact and another end connected to the sliding door of a mini-van, and a pillar contact attached to the stationary pillar of the mini-van. The pillar contact has a shape complementary to a shape of the sliding door contact. When the sliding door is in a closed position, the sliding door is adjacent the pillar and the sliding door contact engages and is in a closed electrical connection with the pillar contact. When the sliding door is in an open position, the sliding door is not adjacent the pillar and the sliding door contact is an open electrical connection with the sliding door contact.
    Type: Grant
    Filed: June 7, 2000
    Date of Patent: November 26, 2002
    Assignee: Methode Electronics, Inc.
    Inventors: Vladimir Karasik, Sheldon J. Allen, Joseph Khoury
  • Patent number: 6351088
    Abstract: A wiper drive apparatus includes a drive gear rotated by a motor, a lead frame carried on a cover attachable to the motor or motor gear and including a circumferentially of discrete conductive traces, and a park switch bridge rotatably mounted on the cover and carrying a circumferentially of spaced contacts, each slidable over conductive traces to open and close a circuit to the drive motor as the park switch bridge is engaged by and rotated by the drive gear. Each contact is carried on a beam projecting from a circumferentially of radially extending arms forming the park switch bridge. A drive pin carried on the drive gear engages successive arms to rotate the park switch bridge 90° for each revolution of the drive gear to bring a different contact into electrical connection with the conductive traces without requiring additional tooling for the lead frame or the park switch bridge itself.
    Type: Grant
    Filed: March 9, 2000
    Date of Patent: February 26, 2002
    Assignee: Valeo Electrical Systems, Inc.
    Inventors: Frank Lombardo, Harry Owlett, Christopher Jones, Harald Klode
  • Patent number: 6274834
    Abstract: A structure of a push-button switch is disclosed which can prevent the occurrence of a poor conduction caused by the influence of dust which has entered the switch and ensuring a stable contact reliability despite of adopting a contact structure which uses round wire rods.
    Type: Grant
    Filed: July 25, 2000
    Date of Patent: August 14, 2001
    Assignee: Alps Electric Co., Ltd.
    Inventors: Mitsuhiro Okada, Hidetaka Sato
  • Patent number: 6245445
    Abstract: A method for rendering a surface of a contact rough includes submerging the surface of the contact in an electroplating bath having a dissolved metal salt, and pulsing an electric current through the contact and the bath to form a rough metallic structure on the surface of the contact.
    Type: Grant
    Filed: March 2, 1999
    Date of Patent: June 12, 2001
    Assignee: Kulicke & Soffa Industries, Inc.
    Inventor: James L. Lykins, II
  • Patent number: 6166341
    Abstract: A low energy switch contact design uses a flat spring moveable contact with contact portions made from the sides of the spring bent ninety degrees from the main spring body so as to make point contact with a stationary contact edge located either above or below the moveable contact. The spring is preferably bifurcated for redundancy of contact.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: December 26, 2000
    Assignee: Honeywell INC
    Inventor: Arthur Wayne Dawson
  • Patent number: 6041497
    Abstract: A high-voltage variable resistor includes a structure which makes it possible to achieve stable and reliable contact conduction between a connection terminal 7 and a terminal electrode 2a. The connection terminal 7 comprises a spring portion 7b. At the end of the spring terminal 7b there is provided a flat contact section 7d which is wider than the other portions thereof. A plurality of protrusions 7e, 7f are formed on this contact section 7d. The outer edge portion of a lead line connecting section 7a of the connection terminal 7, which is accommodated in and fixed to a connection terminal accommodating section 6, is held in a terminal holding groove 6a of the connection terminal holding section 6, and the protrusions 7e, 7f are held in contact with the terminal electrode 2a of an insulating substrate 2 and pressed against the insulating substrate 2.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: March 28, 2000
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Kazuhiro Nakagawa
  • Patent number: 6034860
    Abstract: Opening electrical contacts or electrical circuit interrupters. Particularly, a design for an electrical switch having opening electrical contacts which inhibit arcing. More particularly, a circuit breaker having a micro-contact interface comprising a contact with a plurality of contact points capable of handling high steady state currents conventionally handled by small to medium size molded case circuit breakers (i.e., 0.5 A.sub.rms to 400 A.sub.rms) at distribution voltage levels (120 V.sub.rms to 600 V.sub.rms).
    Type: Grant
    Filed: June 10, 1998
    Date of Patent: March 7, 2000
    Assignee: Eaton Corporation
    Inventor: John J. Shea
  • Patent number: 5852266
    Abstract: According to the present invention there are provided a highly reliable electrode of high strength which undergoes little change even with the lapse of time, and a method for making the same, as well as a vacuum valve using such electrode and a vacuum circuit breaker using such vacuum valve. The vacuum circuit breaker has a fixed electrode and a movable electrode, each comprising an arc electrode, an arc electrode support member for supporting the arc electrode, and a coil electrode contiguous to the arc electrode support member, the arc electrode, the arc electrode support member and the coil electrode being formed as an integral structure by melting, not by bonding, particularly the arc electrode support member and the coil electrode being constituted by a Cu alloy containing 0.05-2.5% by weight of at least one of Cr, Ag, W, V and Zr.
    Type: Grant
    Filed: May 5, 1997
    Date of Patent: December 22, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Katsuhiro Komuro, Yoshitaka Kojima, Yukio Kurosawa, Yoshio Koguchi, Toru Tanimizu, Yoshimi Hakamata, Shunkichi Endo
  • Patent number: 5587886
    Abstract: A structure for contact points of a shift switch used in a computer. The structure includes an elastic contact plate disposed under the shift switch and having projecting contact points to contact the corresponding conductive contact portions of the circuit board. A sloped slot is formed between adjacent contact portions to separate the contact portions from each other and to avoid detachment and scattering of the conductive material of the contact portions. The contact points are designed with an elongated shape so as to provide a smooth sliding motion of the contact points through the sloped slots.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: December 24, 1996
    Assignee: Kinpo Electronics
    Inventor: Si-Chi Lan
  • Patent number: 5508483
    Abstract: A high pressure switch (10) is shown having a housing member (12) with an orifice (22) extending from a first end (18) to a recess (24) formed in a surface (26) in a central portion (14) of the housing. A sidewall (28) extends from surface (26), leaving a shoulder around the recess, forming a cavity (32). An annular support plate (34) is received on the shoulder of surface (26) capturing a flexible membrane (36) which closes recess (24) to form a pressure chamber. An eyelet (40) is disposed contiguous to the support plate (34) and is locked in place by deforming the outer distal portion (30) of wall (28) radially inwardly over the outer periphery of eyelet (40). A terminal (44) is mounted on eyelet (40) but electrically isolated from the outer ring of eyelet (40) by electrically insulating material (46).
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: April 16, 1996
    Assignee: Texas Instruments Incorporated
    Inventors: David A. Czarn, Stanley G. Homol
  • Patent number: 5484971
    Abstract: An electrical contact comprises a body formed of a precious metal in which the precious metal defines a contact surface of the body. At least one projection of the precious metal is formed generally centrally of the contact surface so as to extend therebeyond by successive discrete extrusions of the precious metal into a preselected configuration comprising the projection. A free end portion on the projection is spaced from the contact surface and comprises a chordal section of a sphere.
    Type: Grant
    Filed: April 1, 1991
    Date of Patent: January 16, 1996
    Assignee: General Electric Company
    Inventors: Raphael A. Gonzalez, Ronald W. Kelly
  • Patent number: 5374792
    Abstract: Micromachining methods for fabricating micromechanical structures which include plunger elements free to reciprocate within cavities are fabricated using processing steps in common with those employed in high density interconnect (HDI) technology for multi-chip module packaging. A polymer, such as a polyimide, is utilized as a micromachinable material. In one embodiment, cavities are formed in the polymer material by laser ablation, employing a sacrificial layer as a mask. Electroplated copper may be employed as a sacrificial release layer. One particular structure is a micromechanical electric switch including an array of individual switch contacts actuatable in common.
    Type: Grant
    Filed: January 4, 1993
    Date of Patent: December 20, 1994
    Assignee: General Electric Company
    Inventors: Mario Ghezzo, Richard J. Saia, Bharat S. Bagepalli, Imdad Imam, Dennis L. Polla
  • Patent number: 5142924
    Abstract: An electromagnetically-operated starter motor has a movable electrical contact constituted by a metal plate having, in one of its flat faces, a notch adapted to define an apical region which is subject to stresses within its plastic range. A vibration damper is thus created within the movable contact and eliminates problems resulting from resilient impacts between the contacts.
    Type: Grant
    Filed: June 12, 1991
    Date of Patent: September 1, 1992
    Assignee: Industrie Magneti Marelli SpA
    Inventors: Giancarlo Fasola, Pietro Navarra
  • Patent number: 5140114
    Abstract: 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: Grant
    Filed: April 2, 1991
    Date of Patent: August 18, 1992
    Assignees: Fuji Electric Co., Ltd., Tokuriki Honten Co., Ltd.
    Inventors: Mitsuo Sunaga, Kiyoshi Sekiguchi, Hisaji Shinohara, Akihiro Takahashi, Hiroshi Hikita, Takashi Nara, Sadao Sato
  • Patent number: 4758700
    Abstract: A float switch construction for monitoring liquid levels, comprising a float housing having a float member which is movable therein between raised and lowered positions. In the housing there is a fixed contact member and an asymmetric, elongate movable contact member, the latter having a laterally offset portion constituting a gravity-responsive mass. The housing has an electrically conductive bearing which mounts the movable contact member for both turning and pivotal movement and for conducting current to or from it. The float member and movable contact member are freely turnable with respect to one another, and have cooperable engaging portions for causing the movable contact member to pivot in response to movement of the float member. The fixed contact member has contact portions disposed annularly for engagement by the movable contact member in response to its pivotal movement irrespective of the angular orientation of the float housing.
    Type: Grant
    Filed: May 18, 1987
    Date of Patent: July 19, 1988
    Assignee: Casco Products Corporation
    Inventors: Peter J. Lupoli, Donald J. Mattis
  • Patent number: 4745244
    Abstract: A HF-switch includes a contact set which comprises a bifurcated contact piece cooperating with a contact blade. The contact piece includes a pair of contact springs supported at their one end and provided with opposing contact rivets at their other end between which the contact blade is movable within a predetermined tolerance range. The contact rivets are of circular cone shape and are defined by a height which corresponds at least to half the permissible tolerance range of the contact blade and by a base angle .alpha..ltoreq.45.degree..
    Type: Grant
    Filed: April 22, 1987
    Date of Patent: May 17, 1988
    Inventor: Georg Spinner
  • Patent number: 4738181
    Abstract: A very low inductance, high current, repetitive opening switch for railguns. A specific embodiment has a circular rotor positioned behind the rails with its rotational axis coaxial with the railgun projectile path defined by the rails. The face of the rotor facing the rails has at least one conducting and at least one insulating region, each symmetric about a diameter of the rotor. A pair of current collectors, or brushes, are positioned against the rotor face so that the rotor, when rotating, will alternately conduct and insulate current between the current collectors as conducting or insulating rotor regions sweep past the brushes, thereby communicating current between the switch and the rails. A specific embodiment of the invention has the conducting region the shape of a diametric strip, or shorting bar, and each current collector substantially the shape of an annular segment. The current collectors are made as a plurality of conductive fingers.
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: April 19, 1988
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: James M. Gruden
  • Patent number: 4670725
    Abstract: In a relay tongue unit intended to be included in an electric relay the unit comprises at least one tongue unit in the form of a resilient sheet consisting of an attaching member, which comprises a main portion (1), a fuse portion (2) and a transition portion (3), and a tongue portion (4). This has at its free end a contact (5) and a resistance portion.
    Type: Grant
    Filed: November 8, 1985
    Date of Patent: June 2, 1987
    Assignee: Tocksfors Verkstads AB
    Inventor: Wilgot Ahs
  • Patent number: 4650935
    Abstract: A contactor, relay, or other switch has stationary contacts and a movable crossbar which carries a movable contact member provided with movable contacts. The contact member has lost motion relative to the crossbar and is resiliently biased by a spring so that the crossbar can continue to move after the contacts have met the stationary contacts. The crossbar has oblique guide grooves engaging the contact member so that, during the further movement of the crossbar, the contact member is caused to move longitudinally while the movable and stationary contacts touch, thus producing a contact wiping action due to sliding of the contacts. The contact member also has an asymmetical cross section comprising a projection where, when the contacts are open, it touches the crossbar so that, in this condition, the contact member is laterally tilted.
    Type: Grant
    Filed: December 19, 1985
    Date of Patent: March 17, 1987
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shigeharu Ootsuka, Yuji Mizuno
  • Patent number: 4644112
    Abstract: A linear transformer switch adaptable for connecting the transformer windings in series-parallel or Delta-Y, the switch including a pair of dielectric plates having a number of sets of fixed contacts mounted in a parallel spaced relation, each contact having flat contact surfaces on each side, a bar mounted between the plates for linear movement, at least one sliding current carrying contact assembly mounted on the bar for each set of fixed contacts, each sliding current carrying contact assembly including a pair of conductive plates of a length sufficient to engage two fixed contacts and a pair of louvered contact sections mounted on each conductive plate, with the sections on one plate opposing the sections on the other plate, and a Geneva drive assembly operatively positioned to move the bar one step in each revolution of the bar and being operable externally of the transformer.
    Type: Grant
    Filed: January 3, 1986
    Date of Patent: February 17, 1987
    Assignee: ASEA Electric, Inc.
    Inventor: Neil J. Kranich, II
  • Patent number: RE33457
    Abstract: A contactor, relay, or other switch has stationary contacts and a movable crossbar which carries a movable contact member provided with movable contacts. The contact member has lost motion relative to the crossbar and is resiliently biased by a spring so that the crossbar can continue to move after the contacts have met the stationary contacts. The crossbar has oblique guide grooves engaging the contact member so that, during the further movement of the crossbar, the contact member is caused to move longitudinally while the movable and stationary contacts touch, thus producing a contact wiping action due to sliding of the contacts. The contact member also has an asymmetical cross section comprising a projection where, when the contacts are open, it touches the crossbar so that, in this condition, the contact member is laterally tilted.
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: November 27, 1990
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shigeharu Ootsuka, Yuji Mizuno