Magnetic Structure (e.g., Saturable) Patents (Class 335/84)
  • Patent number: 11155453
    Abstract: A container filling assembly that can be used with container filling systems to fill containers during successive filling cycles with the same or different fluid compositions at high rates of speed, with little to no machinery changeover, and/or with little to no fluid waste.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: October 26, 2021
    Assignee: The Procter & Gamble Company
    Inventors: Justin Thomas Cacciatore, Eric Shawn Goudy, Bernard George Durham, Benny Leung, John Glenn Kuley, Scott William Capeci, Vincenzo Guida, Emilio Javier Tozzi
  • Patent number: 9084819
    Abstract: The present invention relates to a magnetic resonance structure with a cavity or a reserved space that provides contrast and the additional ability to frequency-shift the spectral signature of the NMR-susceptible nuclei such as water protons by a discrete and controllable characteristic frequency shift that is unique to each MRS design. The invention also relates to nearly uniform solid magnetic resonance T2* contrast agents that have a significantly higher magnetic moment compared to similarly-sized existing MRI contrast agents.
    Type: Grant
    Filed: April 2, 2010
    Date of Patent: July 21, 2015
    Assignees: The United States of America, as Represented by the Secretary, Department of Health and Human Services, Office of Technology Transfer, National Institutes of Health, THE UNITED STATES OF AMERICA, REPRESENTED BY THE SECRETARY OF COMMERCE
    Inventors: Gary Zabow, Stephen Dodd, Alan Korelsky, John M. Moreland
  • Publication number: 20130076462
    Abstract: In a bistable magnetic actuator with a polarized magnetic circuit with parallel operating air gaps, wherein between the outer legs of a U-shaped soft-iron yoke a flat permanent magnet is integrated that carries a soft-iron centre leg and applies a permanent-magnetically created magnetic flux to a rocking armature supported on the centre leg, wherein at each outer leg a separately controllable excitation winding provides swiveling pulses for the rocking armature to swivel from one permanent-magnetically self-holding swivel position into the other, the permanent-magnetically created magnetic flux through the magnetic circuit closed over the rocking armature in each case for an electromagnetic magnetic flux created by the excitation winding of said magnetic circuit in a direction opposed to the permanent-magnetically created magnetic flux commutates into the other parallel magnetic circuit with the electromagnetically not excited excitation winding, swiveling over the rocking armature.
    Type: Application
    Filed: April 6, 2011
    Publication date: March 28, 2013
    Inventors: Jörg Gassmann, Steffen Schnitter, Marcus Herrmann
  • Patent number: 8330564
    Abstract: An electrical switching device including a base terminal that extends substantially in an axial direction and has a base contact. The switching device also includes a movable terminal that extends substantially in the axial direction and has a mating contact. The movable and base terminals extend generally parallel to each other and are separated by a field spacing. The movable terminal is selectively movable to and from the base terminal to electrically connect the base and mating contacts at a contact interface. The switching device also includes a magnetic shield that is located between the movable and base terminals within the field spacing. The movable terminal experiences a separation force when current flows through the base and movable terminals in opposite directions. The magnetic shield is configured to reduce the separation force experienced by the movable terminal to facilitate maintaining the contact interface between the base and mating contacts.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: December 11, 2012
    Assignee: Tyco Electronics Corporation
    Inventor: Mitchell Eugene Miller
  • Patent number: 8274344
    Abstract: An electromagnet for use in a relay having a coil bobbin with flange portions at both ends of a coil winding portion where a coil is wound and an iron core with a flange-like head portion at one end of a body portion, the coil bobbin being so fitted onto the iron core that the flange-like head portion and the other end of the body portion of the iron core respectively project out of each of openings formed at the flange portions of the coil bobbin. The iron core has at the other end an engageable portion to be engaged with an engaging portion formed on a grasping part of a coil winding chuck device. The electromagnet further has between the coil bobbin and the iron core a means for preventing misregistration of the coil bobbin fitted onto the iron core.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: September 25, 2012
    Assignee: Panasonic Electric Works Co., Ltd.
    Inventor: Yoshimasa Kato
  • Patent number: 8228143
    Abstract: An assembly including an electromagnetic relay and a circuit board. The electromagnetic relay includes a body having a lateral surface and a bottom surface, and a plurality of terminals protruding outward from the lateral surface of the body. The terminals respectively have distal portions extending beyond the bottom surface of the body. The circuit board is provided with a relay-mount surface. The electromagnetic relay is mounted on the relay-mount surface in an orientation such that the bottom surface of the body is opposed to the relay-mount surface, and the distal portions of the terminals being fixed to the circuit board. Each terminal is formed from a flat plate element and has a shape angled in a width direction of the flat plate element. The body has a height defined in a direction orthogonal to the relay-mount surface of the circuit board and corresponding to a length of a shortest edge of the lateral surface, the shortest edge being shorter than any of edges of the bottom surface.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: July 24, 2012
    Assignee: Fujitsu Component Limited
    Inventor: Satoshi Takano
  • Patent number: 8179217
    Abstract: A polar electromagnet device has a drive shaft comprising an axis center supported so as to reciprocate in an axis center direction at a center hole of a spool wound with a coil, and a movable iron core attached to a lower end of the drive shaft on the axis center. The drive shaft is reciprocated with the movable iron core which reciprocates based on excitation and demagnetization of the coil. A permanent magnet is integrally arranged at the movable iron core on the same axis center.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: May 15, 2012
    Assignee: OMRON Corporation
    Inventors: Kensuke Kawaguchi, Kazuchika Hiroki
  • Patent number: 7982563
    Abstract: The present invention relates to a control device (1, 1?) of an electrical circuit comprising: a microswitch (2, 2?) comprising a moving element that can be driven by magnetic effect between a first stable state and a second stable state to control the electrical circuit, a fixed permanent magnet (10, 10?), a moving permanent magnet (11, 11?) that can be actuated between a first position, in which it forms, with the fixed permanent magnet (10, 10?), a substantially uniform permanent magnetic field (B0) holding the moving element in the first state or the second state, and a second position in which it is able to control the switchover of the moving element from one state to the other, an excitation coil (4) able to create a temporary magnetic field (Bb) able to cause the moving element to switch over from one state to the other when the moving permanent magnet (11, 11?) is in the first position.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: July 19, 2011
    Assignee: Schneider Electric Industries SAS
    Inventors: Miguel Debarnot, Laurent Chiesi
  • Publication number: 20100176902
    Abstract: A magnetic drive system for switchgear has a magnet yoke in which a solid armature made of a magnetic material is guided in a linearly displaceable manner between two opposing end positions. The magnetic drive system further has at least one permanent magnet for generating a magnetic flux in the magnet yoke and at least one coil by which the armature can be moved back and forth between the end positions thereof. The armature is provided with elongated hollow channels for preventing eddy current losses. So as not to excessively reduce the stability of the armature by the channels made therein, the channels in the armature are configured in a closed fashion on the circumference thereof.
    Type: Application
    Filed: June 2, 2008
    Publication date: July 15, 2010
    Inventor: Ralf-Reiner Volkmar
  • Patent number: 7679476
    Abstract: A polarized electromagnetic relay including an electromagnet assembly, a contact section insulated from the electromagnet assembly, and a force transfer member disposed between the electromagnetic assembly and the contact section. The electromagnet assembly includes an electromagnet, an armature driven by the electromagnet, and a permanent magnet carried on the armature. The armature includes first and second electrically conductive plate elements holding the permanent magnet therebetween in a direction of magnetization of the permanent magnet and disposed to orient the direction of magnetization in parallel with the center axis of the coil. The armature is arranged linearly movably in a direction parallel with the center axis in a state where a part of the first electrically conductive plate element is inserted into a space between the outer peripheral region of the iron core head portion and the distal end region of the yoke major portion.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: March 16, 2010
    Assignee: Fujitsu Componenet Limited
    Inventors: Kazuo Kubono, Shinichi Sato
  • Patent number: 7633363
    Abstract: A forcibly guided relay is disclosed, with a housing, whose height is smaller than its width and whose width is smaller than its length. With this, the relay comprises an electromagnetic drive filling the length or the width of the relay, with a clapper-type contactor which comprises a drive arm which extends in the direction of the core and at its free end cooperates with a drive cam; several contact pairs, which are in each case formed by a contact spring and a fixed or spring-like counter-contact said contact springs extending in the direction of the core, and with the drive ends being in a forcibly guided engagement with the drive cam.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: December 15, 2009
    Assignee: Elesta Relays GmbH
    Inventor: Werner Fausch
  • Publication number: 20090189720
    Abstract: The present invention relates to a control device (1, 1?) of an electrical circuit comprising: a microswitch (2, 2?) comprising a moving element that can be driven by magnetic effect between a first stable state and a second stable state to control the electrical circuit, a fixed permanent magnet (10, 10?), a moving permanent magnet (11, 11?) that can be actuated between a first position, in which it forms, with the fixed permanent magnet (10, 10?), a substantially uniform permanent magnetic field (B0) holding the moving element in the first state or the second state, and a second position in which it is able to control the switchover of the moving element from one state to the other, an excitation coil (4) able to create a temporary magnetic field (Bb) able to cause the moving element to switch over from one state to the other when the moving permanent magnet (11, 11?) is in the first position.
    Type: Application
    Filed: January 23, 2009
    Publication date: July 30, 2009
    Applicant: Schneider Electric Industries SAS
    Inventors: Miguel DEBARNOT, Laurent Chiesi
  • Patent number: 7495535
    Abstract: A magnet system for a bi-stable relay includes a coil, first and second core yoke members, and an armature. The coil has a first polarity state and a second polarity state. Each of the first and second core yoke members has a core arm and a yoke arm. Each of the yoke arms of the first and second core yoke members has a pole face. The armature has substantially parallel armature core arms separated by a permanent magnet. The armature is pivotally mounted in an air gap between the pole faces of the yoke arms of the first and second core yoke members such that the armature core arms contact the yoke arms in a first switch position corresponding to the first polarity state and in a second switch position corresponding to the second polarity state. The armature core arms are arranged substantially perpendicular to a center axis of the coil.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: February 24, 2009
    Assignee: Tyco Electronics Austria GmbH
    Inventor: Rudolf Mikl
  • Patent number: 7157994
    Abstract: For manufacturing a thin electromagnetic relay having desired attractive force, both arms as upstanding portions disposed at both ends of a barrel of a plate magnetic material which is punched to be substantially U-shaped as viewed from the front by press working are bended to form magnetic poles having magnetic-pole surfaces extending in a horizontal direction. A vertical face passing through the center of the barrel crosses the centers of the magnetic-pole surfaces at right angles. The width of the barrel is smaller than the height of the barrel.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: January 2, 2007
    Assignee: Omron Corporation
    Inventors: Ryota Minowa, Keisuke Yano, Takeshi Nishiyama, Hironori Sanada
  • Patent number: 6879229
    Abstract: The invention provides an electromagnetic relay excellent in insulating property and high in opening and closing characteristics and productivity. Therefore, a pair of pedestal portions for coil terminals are arranged in the outer circumferential edge portion of the lower flange portion of a spool. A coil drawing-out groove continuously connected to the upper face of the above pedestal portion for a coil terminal is formed along the outer circumferential edge portion of the above lower flange portion. A storing concave portion able to store a shading coil attached to a magnetic pole portion of an iron core projected from a central hole of the above spool is formed on the lower face of the above lower flange portion.
    Type: Grant
    Filed: May 11, 2004
    Date of Patent: April 12, 2005
    Assignee: Omron Corporation
    Inventors: Hiroyasu Tanaka, Hironori Sanada, Hiroaki Yamasaki
  • Patent number: 6859122
    Abstract: Magnetic actuator having a closed magnetic circuit (26) capable of guiding a magnetic flux. The magnetic circuit (26) comprises a fixed magnetic part (30, 31, 32) with a yoke (30) and a mobile part (22), magnetically connected to each other and also at least one main air gap (29) delimited by at least one portion (28) of the mobile part (22) and by the yoke (30). In the main air gap (29), the flux is closed by being set up approximately transverse to the mobile part (22). The fixed part (30, 31, 32) also comprises flux recuperation means (40) that contribute with the mobile part (22) to delimiting an auxiliary air gap (38) in which the magnetic flux is set up laterally to the mobile part (22). The flux is contained on each side of the main air gap (29), on one side by the yoke (30), and on the other side jointly by the mobile part (22) and the flux recuperation means (40) through the part (28) contributing to delimiting the main air gap (29).
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: February 22, 2005
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Claire Divoux, Pierre Gaud, Jérôme Delamare
  • Patent number: 6492887
    Abstract: The invention relates to a microrelay comprising a magnetic spool, a contact support body (2) within which contacts are arranged, a permanent magnet (32) and an armature (31) which is tiltable around it's axis between two positions, as well as a spring-loaded reversing system. The inventive micro relay is characterized in that the magnetic spool system (1) is configured as a flat spool system (1) in the form of a microstructure arranged on a flow plate (11) and is composed of at least one flat microspool (12′). The pivoting armature (31′) can itself be configured in the form of a three pole magnet (32′) or a two pole magnet (32″). The inventive microrelay has a minimal overall height and can be produced in a cost effective way in an automated manufacturing process.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: December 10, 2002
    Assignee: AxiCom Ltd.
    Inventors: Hans Diem, Werner Johler, Werner Kälin, Urs Korrodi
  • Patent number: 6424244
    Abstract: The invention relates to a magnetic switch having a yoke which has the shape of a rotationally symmetrical cup on the base of which is arranged a permanent magnet. The flux of the permanent magnet is conducted via a core, which has a radial core flange, to the plate-shaped armature. For the operational air gap effective between the armature and the core and the yoke and the magnetic resistance WA thereof, the following relation applies in relation to the marginal air gap formed between the core flange and the yoke: WA<WR. As a result of the rotational symmetry with a yoke having the shape of a cup, it is possible to generate a high holding force for the armature with a small structural volume.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: July 23, 2002
    Assignee: Tyco Electronics Amp, GmbH
    Inventor: Horst Hendel
  • Patent number: 6374481
    Abstract: A piece-part microactuator (220), or micromotor, manufacturing approach is presented. In this approach, two of the NiFe parts (221,223) and dielectric and copper (225) piece-parts are manufactured separately. This allows the NiFe parts (221,223) to be designed in a manner to maximize the thickness of the metal, which in turn increases the magnetic properties of the motor. The dielectric and copper coils piece-part (225) may be based upon a thin film interconnect (222) or some derivative of a standard flex circuit printed wiring board. These piece-parts (221,223,225) may be tested individually, defective parts discarded, and only functional units assembled. This not only produces a mechanically balanced construction, but has lower cost due to non-sequential manufacturing steps.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: April 23, 2002
    Assignee: Texas Instruments Incorporated
    Inventors: Kurt P. Wachtler, Mark W. Heaton
  • Patent number: 6133813
    Abstract: A relay has a leaf spring that is secured to a planar seating section of a yoke leg and/or to the planar seating section of the armature and has an unsecured spring section extending beyond the free end of the yoke leg or, respectively, the armature. In order to avoid a plastic deformation of the leaf spring given impacts, the planar seating section respectively merges into a convexly curved roll-off section of which the leaf spring rolls off given a blow without being bent permanently. The end of the roll-off motion is expediently limited by a detent and, in this way, it is assured that the relay does not suffer any permanent modifications of its characteristics, even given heavy blows.
    Type: Grant
    Filed: September 22, 1999
    Date of Patent: October 17, 2000
    Assignee: Siemens Electromechanical Components GmbH & Co. KG
    Inventors: Martin Hanke, Thomas Buescher
  • Patent number: 5986529
    Abstract: An inexpensive electromagnetic relay with a simple configuration is provided which does not require a sliding core to attain the desired operating characteristics. The electromagnetic relay includes a movable component which is supported on an upper end of a coil block in a way that the movable component can freely rotate. The movable component further comprises a movable contact element and a movable iron member. The movable contact element and the movable iron member are isolated from each other by a retainer. The movable contact element, movable iron member and retainer all form a single piece. The retainer further comprises a first retainer portion for retaining the movable contact element, and a second retainer portion for retaining the movable iron member. The first and second retainer portions are also formed into a single piece.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: November 16, 1999
    Assignee: Omron Corporation
    Inventors: Hirotaka Miyata, Masanori Nakamura, Hironori Sanada, Masahiro Kuwahara, Masahiko Tashiro
  • Patent number: 5900791
    Abstract: An armature-mounting arrangement for a hinged-armature relay includes a yoke (3), an armature (1) positioned at an end portion of the yoke, and an armature holding spring (2) which has at least one switching contact thereon and which is mechanically coupled to the armature. The armature holding spring is formed as one piece with a return spring (5) for the armature and also with spring hooks (4). Each of the spring hooks has a first portion (4a) lying substantially flat on an outer side of the armature and a second portion (4b) extending from the first portion about the armature and lying almost flat against an outer surface of the yoke. This armature-mounting arrangement is a particularly uncomplicated and cost effective structure and its operation is also not particularly sensitive to fabrication tolerances of the armature and the yoke.
    Type: Grant
    Filed: November 22, 1996
    Date of Patent: May 4, 1999
    Assignee: Hella KG Hueck & Co.
    Inventors: Wolfgang Hoffmann, Andre Koerner, Maik Zimmer
  • Patent number: 5894254
    Abstract: A relay is formed by a magnet system containing a wound coil body, an L-shaped core arranged axially therein, an L-shaped armature and a base element with terminal elements. Stationary and moving contact elements are arranged between the base element and the magnet system. The armature is mounted with the free end of its transverse leg at the free end of the longitudinal leg of the core. The armature is secured through a U-shaped armature spring wrapping around the armature. The spring is secured with one arm at the longitudinal leg of the armature and a second arm is inserted in a recess between the coil body and the core. The actuation of the moving contact elements is provided via a slide coupled to the armature. This slide is hooked to the armature by spring tabs of the armature spring at opposing sides of the armature through snap latches formed at the ends of the side arms of the slide.
    Type: Grant
    Filed: April 16, 1998
    Date of Patent: April 13, 1999
    Assignee: EH Schrack Components AG
    Inventors: Klaus Reiter, Zoran Gmajner, Ernst Bittermann
  • Patent number: 5867081
    Abstract: A polarized bistable electromagnetic relay arrangement comprising at least two monostable instantaneous electromagnetic relay devices with a L-shaped yoke, a permanent magnet disposed between both relay devices so that one magnetic pole be magnetically connected by polar masses to both yokes of the relay devices and polar masses magnetically connect the other pole of the magnet to both blades whereas the magnetic circuits of both relay devices are designed so that the magnetic flux produced by one energized coil passes in series through both blades while superposing themselves to the magnetic flux produced by the permanent magnet.
    Type: Grant
    Filed: November 20, 1997
    Date of Patent: February 2, 1999
    Assignee: Chauvin Arnoux
    Inventors: Daniel Arnoux, Axel Arnoux, Claude Genter
  • Patent number: 5864268
    Abstract: An electromagnetic relay constructed as a hinged-armature relay in which an armature (5) is attached to a flat-shaped spring (6) which spring is constructed as one piece to serve both as a switch-contact spring and as a return spring and which is mechanically and electrically coupled to a load-current terminal (11), with the load-current terminal having a spring affixing area (11a) and a terminal area (11b), wherein the spring affixing area and the terminal area of the load-current terminal are bendable relative to one another. A response voltage of such a relay can be adjusted in a particularly uncomplicated and quick manner using a wedge-shaped adjusting tool (12) to bend the affixing area relative to the terminal area.
    Type: Grant
    Filed: November 22, 1996
    Date of Patent: January 26, 1999
    Assignee: Hella KG Hueck & Co.
    Inventors: Wolfgang Hoffmann, Andre Koerner, Maik Zimmer
  • Patent number: 5801608
    Abstract: The relay has a magnet system with an armature that operates on a switching spring via an actuating element. This switching spring has a frame-shaped contact spring as well as a fork-shaped reset spring, intermeshed in one plane and mutually decoupled, whereby the reset spring guides the actuating element via at least two linkage points lying in a line parallel to the pivot axis. The relay of the present invention provides a compact construction with few individual parts and a very low-friction operation.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: September 1, 1998
    Assignee: EH-Schrack Components-AG
    Inventor: Leopold Mader
  • Patent number: 5781089
    Abstract: An electromagnetic relay includes a winding, a magnetic core disposed within the winding, and an armature mounted for movement at a first end of the winding. At least one movable circuit contact is operably associated with the armature and movable with respect to at least one stationary contact mounted in the relay responsive to motion of the armature. An end plate is mounted at an opposing end of the winding and an insulating sheet is folded about a portion of the winding. The insulating sheet has first and second sides, with the first side being secured on one end to the end plate, and the second end disposed between the armature and the first end of the winding. An outer frame covers at least a portion of the insulating sheet. The insulating sheet functions to reduce the occurrence of voltage breakdown within the relay.
    Type: Grant
    Filed: November 21, 1996
    Date of Patent: July 14, 1998
    Assignee: Siemens Electromechanical Components, Inc.
    Inventor: Jeffrey A. Doneghue
  • Patent number: 5150090
    Abstract: An electromagnetic polar relay comprising a first yoke having a main portion and first and second ends positioned at respective angles to the main portion; a second yoke, positioned to face the first yoke, having a lower end positioned to face the main portion so that magnetic reluctance between the second yoke and the main portion is larger than a magnetic reluctance between the first end of the first yoke and the main portion; an armature having a first portion movably connected to the second end of the first yoke and having a second portion movable between the first yoke and the second yoke; a coil positioned about the armature; and a permanent magnet, positioned over the main portion, having a first pole magnetically connected to the first end of the first yoke and a second pole magnetically connected to the second yoke. The higher reluctance is due to, for example, an air gap provided by a tapered edge of the second yoke.
    Type: Grant
    Filed: September 22, 1989
    Date of Patent: September 22, 1992
    Assignee: Fujitsu Limited
    Inventors: Takashi Miura, Yoshiaki Kamiya
  • Patent number: 5008641
    Abstract: A relay having a coil body with two contact spaces extending parallel to the coil body axis is provided with two tongue armatures arranged oppositely in parallel fashion through the contact spaces. The coil body has coil flanges at the opposite ends and the tongue armatures are plugged into the contact space from opposite one of the coil flanges to extend to an air gap between pairs of pole pieces arranged at the other coil flange. The pole pieces are arranged in pairs adjacent the terminal end of the other tongue armature. On each of the pairs of pole pieces is a flat four-pole permanent magnet having two outside poles coupled to a contact end of the appertaining tongue armature via a flux plate. The permanent magnet areas which are allocated individually to each pole piece to enable independent balancing to be performed so that synchronous switching of the tongue armatures is achieved.
    Type: Grant
    Filed: May 31, 1990
    Date of Patent: April 16, 1991
    Assignee: Siemens Aktiengesellschaft
    Inventor: Helmut Schedele
  • Patent number: 5003275
    Abstract: A non-latching relay switch assembly which includes a coil section and a switch or contact section. The coil section includes a permanent magnet and an electromagnet. The respective sections are arranged in separate locations or cavities in the assembly. The switch has a "normal" position and is selectively switched by an overriding electromagnetic assembly. The switch returns to the "normal" position when the overriding electromagnetic assembly is inactive.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: March 26, 1991
    Assignee: Babcock, Inc.
    Inventor: Frederick A. Duimstra
  • Patent number: 4978935
    Abstract: A high-speed, high-reliability electromagnetic relay particularly adapted for use in electronic systems with signal frequencies from DC in excess of 20 MHz. A ferro-magnetic armature is attached to an actuator plate made of dielectric material which is in contact with a flexible contact reed. One end of the contact reed is in fixed electrical contact with an input pin and the other end is movable between a normal position in electrical contact with a first output pin and a second position in electric contact with a second output pin. To improve resistance to environmental extremes such as shock and vibration, a permanent magnet can be located so that its attractive force holds the armature in the normal position.
    Type: Grant
    Filed: January 25, 1988
    Date of Patent: December 18, 1990
    Inventors: Jerzy Hoffman, Krzysztof J. Ciezarek
  • Patent number: 4912438
    Abstract: A relay has an elongated rocking armature which is mounted on a coil assembly having a centrally located fulcrum about which the armature seesaws. The coil assembly nests in, and is supported by an insulating mounting block. A cover fits over the entire assembly and extends far enough beyond the bottom of the mounting block to form a retaining wall for receiving a sealant which may be poured therein and which thereafter solidifes. The sealant flows through holes in the mounting block and locks the coil assembly in place by integrally joining the block and coil assembly. Arms are formed on the four corners of the armature assembly, immediately over cantilever electrical contact springs. As the armature rocks, the arms affect the vibrations of the cantilever spring. That is, when the springs flex in a direction away from the arms, the effective vibrating length is the entire length of the springs.
    Type: Grant
    Filed: October 20, 1988
    Date of Patent: March 27, 1990
    Assignee: NEC Corporation
    Inventor: Kiyotaka Yokoo
  • Patent number: 4881053
    Abstract: An electromagnetic relay having an electromagnetic block with a roughly U-shaped iron core formed with a pair of bent opposing magnetic poles at both the ends thereof and with a coil wound therearound via a spool; and an armature block with both ends thereof opposing the magnetic poles and with the middle portion thereof pivotally supported. A permanent magnet is disposed between the two opposing magnet poles of the iron core so as to oppose said armature. The permanent magnet is supported by a support member formed integral with the spool of the electromagnetic block. The armature is pivotally supported by the electromagnetic block.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: November 14, 1989
    Assignee: Omron Tateisi Electronics Co.
    Inventors: Takashi Tanaka, Takezo Sano, Tsutomu Shimizu
  • Patent number: 4797645
    Abstract: An electromagnetic actuator comprising a magnetic circuit consisting of a stationary element and a movable element which actuator applies mechanical force to a valve rod, piston, electro-switch or the like and operates in a monostable manner with high sensitivity and at high speed and has a compact, simple and hardy structure.
    Type: Grant
    Filed: October 18, 1985
    Date of Patent: January 10, 1989
    Assignee: Mitsubishi Mining & Cement Co., Ltd.
    Inventor: Tokio Uetsuhara
  • Patent number: 4788516
    Abstract: Relay comprising an electromagnetic coil wound an an insulating bobbin, the central cavity of which encloses a central spring-biased contact actuated by a magnetic armature in response to energization of the coil, to make or break contact with one or more fixed contacts also enclosed. A U-shaped member and heel plate, both of highly magnetically permeable material, surround the coil and complete the magnetic circuit for flux generated by the coil. In one modification a permanent magnet interposed into the cavity aids or repulses the flux generated by the electromagnet, depending on their respective directions. In accordance with another modification the bobbin and the enclosing coil are elongated to include a plurality of sets of contacts which are being simultaneously actuated.
    Type: Grant
    Filed: August 17, 1987
    Date of Patent: November 29, 1988
    Assignee: Beta Mfg. Co.
    Inventor: Jack B. Meister
  • Patent number: 4733212
    Abstract: A latching solenoid is provided which has first and second coils having a central axial opening arranged to produce oppositely polarized first and second magnetic fields along the axial opening. A paramagnetic path is provided from the central opening around the outside of the coils and back to the central opening, with this path having a first gap within the central opening. A plunger is spring biased within this central opening to close the first gap upon activation of the first coil in opposition to the spring.
    Type: Grant
    Filed: April 29, 1987
    Date of Patent: March 22, 1988
    Assignee: Wright Components, Inc.
    Inventor: Arthur V. Goodwin
  • Patent number: 4730176
    Abstract: An electromagnet device is assembled to, e.g., an electromagnetic relay. This device comprises a movable assembly which is swingably supported and a core in which a coil is wound around a part thereof. The movable assembly has two magnetic plates arranged so as to face each other with a distance and one permanent magnet arranged between those magnetic plates. Each magnetic plate has operating portions at both end portions thereof in which magnetic poles appear due to the permanent magnet. The core has two end portions which are arranged so as to respectively face the operating portions of the magnetic plates. At least one of the operating portions which faces at least one of the end portions of the core is formed at the edge surface of the magnetic plate.
    Type: Grant
    Filed: February 10, 1987
    Date of Patent: March 8, 1988
    Assignee: Omron Tateisi Electronics Co.
    Inventors: Kenichi Matsuo, Muneo Nakata, Kazuhiro Oota, Mitukazu Hori, Tooru Oohara, Makoto Yazawa
  • Patent number: 4701721
    Abstract: A miniaturized electromechanical relay (1) having an armature (14) and a spring assembly (13) mounting contacts with a magnetic core member (15) for activating the armature to operate the spring assembly to engage and disengage the contacts. The magnetic core member is formed of hard and soft magnetic powdered materials (150, 151) sintered together to form a fused boundary therebetween for returning magnetic flux generated by the magnetic core pole areas through the fused boundary and the soft magnetic powdered materials.
    Type: Grant
    Filed: September 11, 1986
    Date of Patent: October 20, 1987
    Assignee: American Telephone and Telegraph Company, AT&T Bell Laboratories
    Inventor: Harold E. McCullough
  • Patent number: 4570138
    Abstract: A balanced armature type relay includes a coil assembly 2 with a coil 20 and an ion core 21 extending through the coil 20, an armature assembly with a pair of frame-shaped upper and lower armatures 3, 4 disposed parallel to each other and so as to surround the coil 20, and a pair of contact units 6, 8 operated by the armature assembly. The coil 20 is covered with a molded portion 23 which has a pair of lateral studs 24 integrally formed with it, the studs 24 defining a horizontal axis about which the armature assembly is pivotal. High accuracy in the positional relation between the pole faces formed by extending ends of the iron core 21 and the respective ends of the armatures 3, 4 cooperating with the pole faces is achieved by the fact that both the pole faces provided on the iron core 21 and the studs 24 form part of the coil assembly which is formed as one common block.
    Type: Grant
    Filed: January 30, 1984
    Date of Patent: February 11, 1986
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Masanori Motoyama, Toyotaka Nishikawa
  • Patent number: 4542359
    Abstract: A polar relay comprises a contact spring assembly, a permanent magnet assembly, a winding assembly and an armature assembly which are arranged on a frame body assembly made of an insulating material. All the assemblies are positioned adjacent to and parallel to each other and are fit in the base during assembly. When mounted on a printed circuit board, the polar relay requires a minimum of area and enhances productivity.
    Type: Grant
    Filed: October 31, 1983
    Date of Patent: September 17, 1985
    Assignee: NEC Corporation
    Inventors: Tatsumi Ide, Masayuki Morimoto
  • Patent number: 4481493
    Abstract: A polarized electromagnetic relay has two U-shaped angled yokes which are parallelly disposed on opposite sides of a permanent magnet. Each yoke has two free lateral legs projecting upwardly at opposite ends of the yoke respectively forming two pairs of yoke legs with the legs of the other yoke. A U-shaped pivotable armature is disposed between the pairs of yoke legs, the armature having downwardly angled legs at its opposite free ends. The two yokes in combination with the permanent magnet are embedded in a coil body. A cup-shaped base body open toward the bottom of the relay is inverted over the coil body, the base body having a bearing for the armature and a plurality of embedded contact terminal pins. In combination with a housing cap, the base body forms a contact space which is sealed from the coil winding and from the exterior atmosphere.
    Type: Grant
    Filed: September 22, 1982
    Date of Patent: November 6, 1984
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ulrich Kobler, Eberhard Wanka
  • Patent number: 4342016
    Abstract: In a transfer-type electromagnetic relay, movable contact studs are attached to both ends of a leaf spring (38) fixed onto an armature (39) for reducing the relay thickness. Leads (26, 27) for fixed contact studs are made of a soft magnetic material. Permanent magnets (46, 47) are placed transversely on the leads with poles of the same name brought nearer to the leads. When selectively magnetized by a coil (48) wound around a housing (21, 22), the armature is swung to carry out contact transfer with a high sensitivity. The relay is rendered self holding by the permanent magnet and the soft magnetic leads. Only one permanent magnet may be used for a current-holding relay. The leaf spring has transverse and longitudinal arms for insuring contact between the movable and fixed contact studs and connection of the movable contact studs to leads thereof.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: July 27, 1982
    Assignee: Nippon Electric Co., Ltd.
    Inventors: Kiyotaka Yokoo, Sadayuki Mitsuhashi, Kazutoshi Wakamatsu
  • Patent number: 4206431
    Abstract: An electromagnetic relay provided with a rotating armature and two yoke arms, which form equally acting working air gaps, a monostable switching characteristic being achieved by means of respective additional pole pieces, whereby each yoke arm of the relay is disposed between a respective pole piece and a cooperable leg of the armature, at least one of the pole pieces being coupled to the armature over a permanent magnet.
    Type: Grant
    Filed: November 3, 1978
    Date of Patent: June 3, 1980
    Assignee: Siemens Aktiengesellschaft
    Inventor: Rolf-Dieter Kimpel