Pivot Support Type Armature-mounting Means Patents (Class 335/276)
  • Patent number: 10770252
    Abstract: A magnetic system of an electromagnetic relay comprises a coil, an iron core, a yoke, and an armature. The iron core extends through the coil and has a first end and a second end opposite to the first end. A second part of the yoke is connected to the first end of the iron core and a first part of the yoke extends in a length direction of the iron core and is separated from the coil. The armature is disposed at the second end of the iron core and has a main body and a bending portion bent from the main body by a predetermined angle. The main body faces an end surface of the second end of the iron core. The bending portion is disposed at an inner side of an end portion of the first part of the yoke and faces the iron core.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: September 8, 2020
    Assignee: Tyco Electronics (Shenzhen) Co. Ltd.
    Inventor: Xiaoning Zhang
  • Patent number: 10748718
    Abstract: A power contactor having an electromagnetic driving unit, a rotating armature, and a reset element. The rotating armature is switched by the electromagnetic driving unit between an open position and a closed position. The reset element exerts a reset force onto the rotating armature when in the closed position.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: August 18, 2020
    Assignee: TE Connectivity Germany GmbH
    Inventors: Harry Koch, Matthias Kroeker
  • Patent number: 9916953
    Abstract: The present disclosure describes an apparatus for increasing the initial closing force and reducing the final closing force in the actuating mechanism of electromechanical switching devices such as relays or contactors.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: March 13, 2018
    Assignee: Rockwell Automation Switzerland GmbH
    Inventors: Hans Weichert, Pascal Benz
  • Patent number: 9514872
    Abstract: An electromagnetic actuator includes a plunger, an armature, and a coil. The plunger is moveable between a first position and a second position. The armature includes a first armature portion proximally disposed about the first position, and a second armature portion proximally disposed about the second position. The coil is proximally disposed with the first armature portion and, when energized, is configured to generate a magnetic field. The magnetic field causes the plunger to move toward the first position by a magnetic flux through a magnetic circuit. The magnetic circuit includes the first armature portion, the plunger, a main air gap, and a variable air gap. The main air gap and variable air gap are between the first armature portion and the plunger. The main air gap diminishes as the plunger moves toward the first position. The variable air gap enlarges as the plunger moves toward the first position.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: December 6, 2016
    Assignee: General Electric Company
    Inventors: Vandana Rallabandi, Srinivas Satya Sai Mallampalli, Ravindra Shyam Bhide
  • Patent number: 8928438
    Abstract: An electromagnetic relay has a fixed touch piece having a fixed contact; a movable touch piece, having a movable contact contactably and separably opposed to the fixed contact, and configured to elastically deform, an electromagnet, an intermediate member that rotates based on magnetization and demagnetization of the electromagnet and elastically deforms the movable touch piece, and an energization unit that energizes the movable touch piece to the fixed contact piece side via the intermediate member.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: January 6, 2015
    Assignee: OMRON Corporation
    Inventors: Yasuyuki Masui, Toshiyuki Kakimoto, Tsukasa Yamashita, Keisuke Yano
  • Patent number: 8461951
    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 center leg and applies a permanent-magnetically created magnetic flux to a rocking armature supported on the center 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: Grant
    Filed: April 6, 2011
    Date of Patent: June 11, 2013
    Assignee: Johnson Electric Dresden GmbH
    Inventors: Jörg Gassmann, Steffen Schnitter, Marcus Herrmann
  • Patent number: 7746202
    Abstract: The invention relates to a magnetic actuating device containing a reference element and an adjusting element which is movably disposed between first and second end positions with respect to the reference element. The reference and/or adjusting elements contain a magnetizable material. A drive coil is provided for generating a magnetic field that moves the adjusting element from the first to the second end position. A mechanical clamping device is provided for producing mechanical forces that move the adjusting element from the second to the first end position. A fixing device is provided with a permanent magnet for generating a holding force fixing the adjusting element in the second end position with respect to the reference element. The fixing device contains a fixing unit separated from the adjusting element and provided with the permanent magnet.
    Type: Grant
    Filed: March 14, 2006
    Date of Patent: June 29, 2010
    Assignee: Siemens Aktiengesellschaft
    Inventors: Jörg Hagen, Carsten Protze
  • Patent number: 7710223
    Abstract: A relay includes a movable iron piece, a plate spring fixed to the one surface of the movable iron piece, a shaft hole formed by the one surface of the movable iron piece and the plate spring, and a supporting shaft inserted through the shaft hole. The movable iron piece is rotated round the supporting shaft based on excitation and nonexcitation of a magnetic unit. Both end portions of the plate spring alternately drive a contact point unit. The shaft hole is formed by a flat portion of the one surface of the movable iron piece and a bearing portion formed by subjecting the plate spring to bending work. The movable iron piece is supported so as to be rotatable.
    Type: Grant
    Filed: August 8, 2006
    Date of Patent: May 4, 2010
    Assignee: OMRON Corporation
    Inventors: Akira Ota, Tatsuo Shinoura, Yojiro Saruwatari, Masanori Nakamura
  • Patent number: 7547000
    Abstract: A method for coupling a valve member to an armature member includes coupling the valve member to a surface of a bore of the armature member. The valve member contacts the armature member over less than an entire axial thickness of the surface of the bore of the armature member. The method further includes aligning the armature member to a desired alignment and securing the valve member to the armature member at the desired alignment.
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: June 16, 2009
    Assignee: Caterpillar Inc.
    Inventors: Stephen Robert Lewis, Amy Shalaine Johanson, James Joseph Streicher
  • Patent number: 7532098
    Abstract: An actuator includes an electromagnetic coil arrangement that is movable relative to a magnetic field generator between a first position and a second position of the actuator. The actuator is arranged such that when the actuator is in the first position, a pulse of current through the electromagnetic coil arrangement produces a region of magnetic field that repels the magnetic field generator from the first position and attracts the magnetic field generator towards the second position to move the actuator to the second position.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: May 12, 2009
    Assignee: ArvinMeritor Light Vehicle Systems (UK) Limited
    Inventors: Nigel Victor Spurr, Gurbinder Singh Kalsi, Sidney Edward Fisher
  • 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
  • Publication number: 20080204177
    Abstract: The actuator (10, 90) of a personal care appliance, such as a toothbrush (11), which includes a housing member (12), a double E shaped yoke assembly (14, 52) with two electrical coils (36, 38) wound around the opposing E shaped sections. An armature (28) extends adjacent the top of the yoke assembly (14, 52), extending beyond the edges thereof. The armature (28) further includes side portions which extend adjacent the sides of the E shaped yoke (52), with each side portion including two spaced magnets which are aligned with the coils (36, 38) when the actuator (10, 90) is in a rest position. Power is supplied from a battery source, and a programmable control assembly (46) applies power to the coils (36, 38) in a selected manner to produce axial and/or tangential or complex movement of the brushhead workpiece (33) at the end of an output shaft extending from the armature (28).
    Type: Application
    Filed: August 4, 2006
    Publication date: August 28, 2008
    Inventors: Ettes Willhelmus, Pawel Leshem, Pieter Johannes Bax, Andries Bron
  • Patent number: 7414503
    Abstract: A pivoting device such as a MEMS mirror provides improved coupling between a permanent magnet on the device and an adjacent electrical coil that may provide a drive force or position sensing. The improved coupling is obtained by forming a cavity in the coil structure. The cavity receives the permanent magnet such that the spacing between the magnet and the electrical windings or coil is at a minimum.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: August 19, 2008
    Assignee: Texas Instruments Incorporated
    Inventors: John W. Orcutt, Mark W. Heaton
  • Patent number: 7306196
    Abstract: The electromagnet includes a valve-opening side coil portion supplied with a current to thereby generate a first magnetic flux and generate electromagnetic force in a direction moving the valve-opening side moving element toward a valve-opening position, and a valve-closing side coil portion supplied with a current to thereby generate a second magnetic flux and generate electromagnetic force in a direction moving the valve-closing side moving element toward the valve-closing position. The valve-opening side coil portion and the valve-closing side coil portion are constituted of an identical connection. The electromagnet further has a sub-coil constituted of a separate connection from the valve-opening side coil portion and the valve-closing side coil portion. By the current supply to the sub-coil, a third magnetic flux reducing at least one of the first magnetic flux and the second magnetic flux is generated.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: December 11, 2007
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kiyoharu Nakamura, Yutaka Sugie
  • Patent number: 7089894
    Abstract: A lever electromechanical valve actuator assembly and arrangement of electromechanical valve actuators that creates a compact actuator assembly to increase ease of serviceability, provide space for engine components and eliminate interference between the actuators and components in the vehicle engine compartment.
    Type: Grant
    Filed: October 13, 2004
    Date of Patent: August 15, 2006
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Mark L. Hopper, John D. Norton, Shawn H. Swales
  • Patent number: 7026900
    Abstract: A magnetic motion device is disclosed, wherein a permanent magnet slides back and forth along a pivoting rail due to the interaction between the slide's magnetic field, the magnetic fields produced by a permanent/electromagnet combination at each end of the rail, and gravitational force. The ends of the rail thereby move up and down in a reciprocating, “see-saw” fashion. Power-take-off mechanisms can be connected in any suitable manner to the device, so that the motion of the rail can power an external device such as a pump.
    Type: Grant
    Filed: September 22, 2005
    Date of Patent: April 11, 2006
    Inventors: John Gregory, James Kearns
  • Patent number: 6739573
    Abstract: A valve assembly and method for regulating a fluid flow and attenuating noise. The valve assembly comprises a body having a passage extending between a first port and a second port, a seat defining a portion of the passage, a member movable with respect to the seat, an actuator moving the member from the first configuration to the second configuration, and a damper movable with respect to the actuator and located at a radial gap between the member and the actuator. The member moves generally along an axis between a first configuration prohibiting fluid flow through the seat and a second configuration permitting fluid flow through the seat. The member includes a first portion adapted to sealingly engage the seat in the first configuration, and a second portion extending along the axis between a first section that is distal from the first portion and a second section that is fixed to the first portion. The actuator has an aperture extending along the axis and generally receiving the second portion.
    Type: Grant
    Filed: October 30, 2000
    Date of Patent: May 25, 2004
    Assignee: Siemens Canada Limited
    Inventor: David Balsdon
  • Patent number: 6674353
    Abstract: The magnet system is part of a relay, which displays particularly low-noise switching. Components of the magnet system include a core unit (1), an armature (6) and a not represented coil, whereby the armature (6) is preloaded in an open position. The low-noise switching behavior is achieved in that the armature (6) is designed in such a manner that the armature pole face in the region of its front end (8a) in the closing direction is essentially perpendicular to a connecting line (16) towards the bearing edge (12). In addition, when the armature (6) is attracted, the core pole face (9) extends at least substantially parallel to the armature pole face (8). The arrangement according to the invention requires no additional parts for the purpose of noise reduction, resulting in a particularly simple and compact structure.
    Type: Grant
    Filed: June 17, 2002
    Date of Patent: January 6, 2004
    Assignee: Tyco Electronics Logistics AG
    Inventors: Martin Hanke, Ralf Hoffmann, Josef Kern, Karsten Pietsch
  • Patent number: 6545575
    Abstract: In a relay (100), right and left sides of an edge on an upper end side of an L-shaped armature (201) are bent to form an engagement portion (201a) and the armature 201 is held to be rocked and displaced through an energizing spring piece (205c) of a hinge spring (205) in a state in which the engagement portion (201a) is engaged with an edge portion 204c of an end face 204a on an upper end side of a core (204). During magnetic adsorption, moreover, an upper end of the armature (201) has an outer peripheral surface thereof to abut on the end face (204a) at the upper end side of the core (201) in a close contact state.
    Type: Grant
    Filed: September 4, 2001
    Date of Patent: April 8, 2003
    Assignee: Idec Izumi Corporation
    Inventors: Michio Hirabayashi, Syuuichi Taga, Yoshiaki Tsurui, Katsuhiro Ikeda, Tsutomu Takada, Shigeru Tsujimura, Masaaki Yamazaki, Hirokazu Mukai
  • Patent number: 6484998
    Abstract: A solenoid valve (50) has a valve housing (51) with a valve slide (53) in which two magnets, with one pole (1) each, are inserted. The poles (1) each have a coil core (8, 9) which extends along a longitudinal axis (10) and in which in each case one armature tappet (17), which activates one end of the valve slide (53) with an activation end (27), is provided. Arranged on each armature tappet (17) is a magnet armature (23) which has two armature side faces (24, 25) which extend obliquely with respect to the longitudinal axis (10). The coil core (8, 9) has two core side faces (12, 19) which extend parallel to one armature side face (24, 25) in each case.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: November 26, 2002
    Assignee: Bosch Rexroth AG
    Inventor: Rudolf Schäffer
  • Patent number: 6043730
    Abstract: An electromagnetic actuator has an iron core around which a coil is wound; two permanent magnets, the same poles of which are placed on the ends of the core which extend beyond the coil and which have the same direction of polarity; magnetic poles formed on either end of the iron core; a yoke which connects the poles of the magnets opposite those which face the core; and an iron armature which is supported by a fulcrum on the yoke in such a way that it is free to rotate around the fulcrum, and which has on either end a magnetic pole which faces one of the poles of the core.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: March 28, 2000
    Assignee: Omron Corporation
    Inventors: Kozo Maenishi, Kazuo Tsuboi
  • Patent number: 5982257
    Abstract: An electromagnetic relay is provided having a base; a motor assembly mounted on the base, the motor assembly including a coil, a core and a frame; an armature pivotably mounted on the frame; a first electrical contact mounted to the base; a movable elongated member biased against the armature at least at two points such that movement of the armature is restricted and the armature is disposed toward an initial position spaced from the core; and a second electrical contact mounted to the movable elongated member and operatively associated with the first electrical contact.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: November 9, 1999
    Assignee: Siemens Electromechanical Components, Inc.
    Inventor: Richard Allen Vernier
  • Patent number: 5908051
    Abstract: An actuating selection device for a dobby mechanism for controlling movement of components used to affect movement of a heddle frame and a weaving loom wherein the selection device includes selector members which are pivotally mounted adjacent pole faces of an electromagnet and wherein a moveable armature is pivotally connected to the selector member and includes an outer extremity which is continuously urged into contact with a first of the poles of the electromagnet by a resilient element. The selector member is spaced from the electromagnet when no power is applied thereto and the selector member is moved toward the other pole of the electromagnet together with the moveable armature when power is supplied to the poles of the electromagnet with the movement of the selective member thus controlling the movement of the pair of components which affect the movement of the heddle frame.
    Type: Grant
    Filed: December 15, 1997
    Date of Patent: June 1, 1999
    Assignee: Staubli Faverges
    Inventors: Jean-Paul Froment, Jean-Pierre Pages
  • Patent number: 5872497
    Abstract: A high energy transfer relay includes a housing, a solenoid, a pivot arm, a stationary contact, a switching contact and a leaf spring. The switching contact is mounted on the leaf spring. The armature of the solenoid is coupled to the pivot arm such that when the solenoid is energized, the pivot arm moves in the direction of the stationary contact. Movement is against the force of the leaf spring which is positioned to bias the pivot arm away from the stationary contact against a stop. The leaf spring also pre-loads the pivot point. In addition, the resilience of the leaf spring cushions the impact of the switching contact on the stationary contact to help prevent contact bounce. The outer end of the pivot arm includes a flat that coacts with a flat wall to form an air cushion. The air cushion also assists in preventing contact bounce by absorbing the momentum of the pivot arm after the contacts mate.
    Type: Grant
    Filed: October 23, 1996
    Date of Patent: February 16, 1999
    Assignee: Physio-Control Corporation
    Inventors: Daniel Yerkovich, Stephen T. Vincent, Richard J. Cardin
  • Patent number: 5786649
    Abstract: A rotary electromagnetic actuator comprises a rotatable shaft carrying a rotor which is rotatable relative to a stator. A magnetic circuit is set up which comprises the stator and the rotor, the reluctance of the magnetic circuit being dependent on the relative rotational orientation of the rotor and stator and decreasing in a particular direction of rotation such that the reluctance is a minimum at an equilibrium position to which the rotor is therefore biased. The rotor is selectively impelled to advance away from the equilibrium position, subsequently again becoming part of a magnetic circuit, the reluctance of which decreases in the direction of rotation to a minimum at an equilibrium position to which the rotor becomes biased. The actuator provides undirectional rotation for successive actuations at substantially uniform torque and is suitable for use in actuating rotary devices such as rotary valves.
    Type: Grant
    Filed: December 27, 1996
    Date of Patent: July 28, 1998
    Inventor: Dafydd Roberts
  • Patent number: 5781090
    Abstract: A latching electromagnet is provided. The electromagnet (300) includes a core (305) having a pole face, a coil of windings (325), and an armature (330). Advantageously, the core has a geometry that locally increases the magnetic flux density to saturation levels.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: July 14, 1998
    Assignee: Caterpillar Inc.
    Inventors: C. Nickolas Goloff, Rodney L. Rolffs
  • Patent number: 5772179
    Abstract: An electromagnetically actuated valve is disclosed. The valve includes an upper electromagnetic element and a lower electromagnetic element in a mirrored and facing relationship to each other. The electromagnetic elements define a central channel that surrounds a vertical axis. The valve further includes an armature element that is disposed intermediate the upper and lower electromagnets. The armature element is pivotally mounted to an armature shaft. The armature shaft is perpendicular to the vertical axis. The valve further includes a coil disposed within the central channel of each of the electromagnetic elements.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: June 30, 1998
    Assignee: Aura Systems, Inc.
    Inventors: Fernando B. Morinigo, Carmi Goldstein, Dennis Bulgatz
  • Patent number: 5734308
    Abstract: Electromagnetic, monostable, small relay has a rocker armature arranged between a base plate and a coil, the armature being mounted with its middle segment at the end of an L-shaped yoke, and forming a working air gap with a second yoke. Contact springs are connected with the armature, which work together with fixed contacts anchored in the base. A resetting spring is connected with the armature and prestresses the armature into a rest position on the first yoke. For stabilization of the construction, and for separation between a contact chamber and a coil chamber, a base body is provided with an H-shaped cross-section, which overlaps the base plate in an interleaving manner, and which forms supports for the terminal pins of the base plate on both sides of the armature. In this way, a monostable relay is created, which can have any of conventional soldering pin terminals, SMT terminals, or press-fit terminals.
    Type: Grant
    Filed: December 19, 1996
    Date of Patent: March 31, 1998
    Assignee: Siemens Aktiengesellschaft
    Inventors: Michael Dittmann, Jens Heinrich
  • Patent number: 5669652
    Abstract: Several finger-like grippers (4) are held and guided in openings or holes (21) in the head part (6) of a housing (20) so they can pivot about axes which are in a common plane transverse to the longitudinal axis (L) of the housing (20). Permanent magnets (11, 12) fixed to the inner ends of the grippers (4) cooperate with an electromagnet (13) provided in the housing (20) above the magnets (11, 12), the magnetic field axis of the electromagnet coinciding with the longitudinal axis (L) of the housing (20). The electromagnet moves the inner ends of the grippers (11, 12) back and forth between two stops (16, 17) depending on the polarity of the electromagnet (13).
    Type: Grant
    Filed: August 1, 1996
    Date of Patent: September 23, 1997
    Assignee: Balzers und Leybold Deutschland Holding AG
    Inventors: Michael Reising, Stefan Kempf, Michael Konig
  • Patent number: 5646588
    Abstract: An electromagnetic actuator is disclosed. The actuator includes a core having an inner and outer pole that defines a pole face. A coil of windings is disposed in the core and produces a magnetic field. An armature is moveable between first and second positions in response to the force produced by the magnetic field. A stroke elongation device is disposed adjacent to the outer pole piece and closely spaced from the armature. The stroke elongation device increases the pull-in force of the electromagnetic actuator.
    Type: Grant
    Filed: September 19, 1994
    Date of Patent: July 8, 1997
    Assignee: Caterpillar Inc.
    Inventor: Howard N. Cannon
  • Patent number: 5608176
    Abstract: An electromagnetic valve for a pipe organ is located and operated so that the valve closure member opens and closes the windway to the pipe at an obtuse angle thereby slowing down the opening of the windway to prevent or minimize overblowing and eliminating or minimizing rebounding of the closure member when it closes the windway to minimize or eliminate unwanted continued speech by the pipe.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 4, 1997
    Inventor: Timothy J. Patterson
  • Patent number: 5535654
    Abstract: A microtome (2) with a sample holder (51) for a sample (22) to be thinly sectioned and with a knife holder (12) for a cutting knife (10) is described, wherein the sample holder (51), for performing a cutting movement (arrow 54) relative to the knife holder (12), can be driven in a first spatial direction (arrows 54, 56) by means of a first drive device (53), and for performing a coarse adjustment and a section thickness adjusting movement in a second spatial direction (arrow 24) perpendicular to the first spatial direction (54, 56) by means of an electrical second drive device (50). In the vicinity of the cutting knife (10), for defined delimitation of the coarse adjustment movement of the sample holder (51) in the second spatial direction, a delimiting device (20) is provided, which is connected over control means (44), preferably an electronic control, with the electrical second drive device (50).
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: July 16, 1996
    Assignee: Microm Laborgerate GmbH
    Inventors: Christian Niesporek, Hans Heid
  • Patent number: 5522277
    Abstract: A solenoid-operated latch for a linearly movable shaft such as a shift lever shaft of a vehicle transmission includes an L-shaped armature that forms a latch plate and a magnetic arm. The shaft extends along the solenoid axis and through a clearance hole in the latch plate. Energization of the solenoid draws the magnetic arm toward a planar pole piece at one end of the solenoid winding. The latch plate swings from a position normal to the shaft axis to a tilted condition acutely angled to the shaft axis so that edge areas of the clearance hole grip the shaft surface.
    Type: Grant
    Filed: June 12, 1995
    Date of Patent: June 4, 1996
    Assignee: Carter Automotive Company, Inc.
    Inventor: Steven R. Bollinger
  • Patent number: 5512871
    Abstract: A constant-torque single-phase electromagnetic actuator including a stationary device including a first magnetic stator circuit made of a high-permeability material and excited by at least one field coil (10), and a movable device (1) including an axially magnetized disc (3) having 2N pairs of magnetic poles magnetized in alternate directions, wherein the magnetization is substantially uniform. The magnetized disc (3) is attached to a second magnetic circuit (6) made of a high-permeability material, and the movable device is provided with a coupling shaft (7). The connection between the stationary device (1) and the movable device (2) allows at least some axial play of the coupling shaft (7) away from the stationary stator device (2), and the diameter of the magnetized disc (3) is substantially identical to that of the poles of the stator circuits. Play between the stationary (2) and Movable (1) devices is compensated by the magnetic attraction exerted by the stationary device on the movable one.
    Type: Grant
    Filed: November 28, 1994
    Date of Patent: April 30, 1996
    Assignee: Moving Magnet Technologies S.A.
    Inventors: Claude Oudet, Daniel Prudham
  • Patent number: 5370029
    Abstract: An electromagnetically operated valve assembly having a valve closure means attached to a vertically suspended armature supported at its top portion, is held in magnetic fields at both the top and bottom portions of the armature, caused by permanent magnets reacting to iron or other permanent magnets. The movement of the armature is guided to insure close alignment and to eliminate side play by means of a main frame assembly mounted in a pipe organ wind chest so as to control air under pressure from the wind chest into at least one pipe organ. The permanent magnet at the bottom portion of the armature cooperates with an iron core of a solenoid mounted to the main frame assembly, to close or open the valve. The valve may also be provided with a second solenoid to both assist moving the valve to the open position, and to aid in holding the valve in the open position.
    Type: Grant
    Filed: June 1, 1993
    Date of Patent: December 6, 1994
    Inventor: Justin Kramer
  • Patent number: 5065127
    Abstract: A relay includes a leaf spring for bearing an armature at a free end of a yoke, the leaf spring forming, first, a bearing plate lying against the yoke and, second, a pull-back spring applied thereto in one piece. The pull-back spring has a first section cut free from the middle of the bearing plate so that the bearing plate is subdivided into two plate sections on which the armature rests only at its lateral regions on its bearing edges. Further, the pulled-back spring as its free end cut arcuately roughly symmetrical to the center axis of the bearing plate to exert an approximately symmetrical pull-back force on the armature.
    Type: Grant
    Filed: January 30, 1991
    Date of Patent: November 12, 1991
    Assignee: Siemens Aktiengesellschaft
    Inventors: Herbert Mitschik, Fritz Hinrichs
  • Patent number: 5063366
    Abstract: Disclosed is an electromagnetic relay whose armature assembly is protected against jarring impacts. The armature assembly is tiltably supported in a recess stamped out in an end portion of the magnetic yoke of the relay. Lateral inner walls of the recess are formed at their free ends with shoulders for engaging a flat biasing spring of the armature assembly. At least one lateral portion of the magnetic yoke delimiting the recess is formed with a constricted region, for example with a cutout in a corner between an inner wall and the bottom wall of the recess. The constriction permits the bending of the lateral projection into an open condition in which the corresponding shoulder is out of the way during the insertion of the armature assembly into the recess. Upon the insertion, the lateral projection is bent toward the armature until the corresponding shoulder overlaps the armature edge.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: November 5, 1991
    Assignee: Robert Bosch GmbH
    Inventors: Erhard Edelhaeuser, Hans-Dieter Schmid, Ludwig Speckner, Karl Wutz, Horst Steffen
  • Patent number: 5040567
    Abstract: The multi-way valve comprises two valve seats (12, 14) formed in the valve chamber whose seat surfaces are parallel. Two closing bodies (22, 24) cooperating with one of these valve seats (12, 14) respectively are attached to both ends of an elongated actuating member (20). To this actuating member (20) there is attached the one end of an elastic lamella (18) whose other end (18A) is braced at the valve chamber (10). The actuating member (20) may swivel rocker-like around a swivel axis (28) which is not fixed in space. Although no direct guide for the actuating member (20) is provided, a precise guiding largely free from tolerances is guaranteed so that the drive power required is low.
    Type: Grant
    Filed: July 17, 1989
    Date of Patent: August 20, 1991
    Assignee: Burkert GmbH & Company Werk Ingelfingen
    Inventors: Volker Nestler, Peter Tillman
  • Patent number: 5024247
    Abstract: A control motor for a servo valve which includes pole screws defining an armature space, first and second coils supported by the pole screws, respectively, a soft metal armature which is resiliently mounted to a thin walled tube and a permanent magnet which polarizes the armature. An annular body carrying said pole screws and providing for a magnetic path between the pole screws and the permanent magnet.
    Type: Grant
    Filed: April 23, 1990
    Date of Patent: June 18, 1991
    Assignee: Mannesmann Rexroth GmbH
    Inventor: Herbert Lembke
  • Patent number: 5007464
    Abstract: An electromagnetic device is provided for use, for example, as a yarn brake, a rely nozzle valve, a weft yarn stretching nozzle and the like. The electromagnetic device has a pole piece associated with a winding connectable to an electric line. A spring strip is fixedly mounted at one end and projects over a curved abutment surface on the pole piece. In the absence of a magnetic field, the spring strip is disposed in spaced relation to the abutment surface. When a magnetic field builds up in the winding and the pole piece, the free end portion of the strip engages with the abutment surface of the pole piece along an increasing length, for example, to brake a yarn therebetween and, as the magnetic field intensifies, more and more zones of the spring strip engage the pole piece. Consequently, the initial speeds at which the strip moves at engagement and upon cessation of energization of the winding are relatively high.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: April 16, 1991
    Assignee: Sulzer Brothers Limited
    Inventor: Joannes J. H. M. Gorris
  • Patent number: 4945331
    Abstract: An electromagnetic actuator for driving a hammer of an impact printer includes a solenoid and an armature which is attracted thereby. In a state of standby for printing, no current is supplied to the solenoid, and the armature holds the hammer in an urge-accumulated state. Upon supply of a current to the solenoid, the armature is attracted toward the core, and the hammer head in that state is released so as to be impacted against a platen, thereby effecting a printing operation. If the current is shut off with the armature attracted by the core of the solenoid, the armature returns to its original position. To effect a speedy return at that juncture, a return leaf spring having a resilient bent portion is interposed between the core and the armature.
    Type: Grant
    Filed: July 25, 1989
    Date of Patent: July 31, 1990
    Assignee: Citizen Watch Co., Ltd.
    Inventor: Tadashi Kashio
  • Patent number: 4893104
    Abstract: An electromagnetic acutator device for selecting needles in a knitting machine comprises two windings (3,4) positioned on opposite sides relative to an armature (5) in a support structure (2) made from a ferromagnetic material. The armature (5), which is also made from a ferromagnetic material, is hinged onto the structure (2), according to an axis substantially perpendicular to the axis of the windings (3,4) and is subject to the action of the magnetic filed generated by the windings (3,4) in order to be moved between two angular positions. The armature is hinged at one end engages a selection lever (11) at its other end, and has a configuration with two transversal portions (19, 20) protruding from opposite sides, and penetrating inside the interior of the windings (3,4).
    Type: Grant
    Filed: December 29, 1988
    Date of Patent: January 9, 1990
    Assignee: Santoni S.r.l.
    Inventor: Leone Donini
  • Patent number: 4851800
    Abstract: Electrically and manually operable stop controls for a musical instrument such as an organ are disclosed. One embodiment of the stop control is a drawknob carried by an a transfer plate mounted for horizontal motion adjacent a solenoid having an iron core. Vertical hinge members at opposite ends of the solenoid support the transfer plate. A permanent magnet is mounted on each hinge member in general alignment with the iron core, the hinge members being spaced apart sufficiently to insure that only one permanent magnet at a time is adjacent the iron core, to thereby provide a manual magnetic and gravity-operated toggle motion. Application of an electrical direct current of selected polarity to the solenoid permits electrical shifting of the transfer plate. In a further embodiment, the drawknob is secured to a pivotally mounted armature having a cross-member which carries permanent magnets. Solenoids are mounted at opposite ends of the cross-member to provide electrical shifting of the armature.
    Type: Grant
    Filed: February 22, 1988
    Date of Patent: July 25, 1989
    Inventors: Richard H. Peterson, Justin Kramer
  • Patent number: 4818965
    Abstract: In a relay including an angle yoke (5), a flat armature (8) and a thin base plate (6) applied to the outside of the yoke, which forms a bearing groove (7) for the armature (8) together with the rectangularly cut end face (5a) of the yoke. The armature is pushed into the bearing groove by a predetermined particularly shaped bearing spring (15) and acted upon by a reset rotational moment. Through this arrangement, a space saving and cost-efficient construction of the relay with constant armature bearing force is obtained as well as low response efficiency.
    Type: Grant
    Filed: May 28, 1987
    Date of Patent: April 4, 1989
    Assignee: Siemens Aktiengesellschaft
    Inventors: Fritz Hinrichs, Herbert Mitschik
  • Patent number: 4803506
    Abstract: An electromagnetic control device for a camera or the like is provided with a magnet core having an attracting face and with an armature pivotally connected to a control member for movement about a pivot axis to allow tilting of an attracted face of the armature into intimate face contact with the attracting face of the magnet core. The control member is pivotally mounted for movement about a pivot axis, to swing the armature to urge its attracted face against the attracting face of the magnet core, until the attracted face is tilted into intimate face contact with the attracting face. A degree of free play exists at the pivotal mounting of the control member to allow the control member to move about the pivot axis of the armature after the attracted face of the armature is tilted into face contact with the attracting face of the magnet core.
    Type: Grant
    Filed: January 14, 1988
    Date of Patent: February 7, 1989
    Assignee: Eastman Kodak Company
    Inventors: Conrad Diehl, Anthony DiRisio
  • Patent number: 4771253
    Abstract: An operation indicating device for electromagnetic relay which comprises a working member interlockable with an armature of an electromagnetic relay and extending into a space above a yoke, and an indicating member coupled to the working member and having an axis rotatably supported in the space above the yoke, the indicating member having a recognizable indicating portion and being rotatable by the working member interlocking with the armature during the operation of the armature, the indicating portion of indicating member thus rotated arriving at a position corresponding to an indication window formed in a case cover.When the armature is activated, the working member, interlockable with armature, is activated and the indicating member coupled to the working member is rotated around a supporting shaft serving as the fulcrum.
    Type: Grant
    Filed: May 19, 1987
    Date of Patent: September 13, 1988
    Assignee: Idec Izumi Corporation
    Inventors: Naruhito Sasaki, Toshiyuki Kasama, Shigeru Tsujimura, Toshio Watanabe
  • Patent number: 4749977
    Abstract: A coil mounting arrangement includes a coil wound on a bobbin and in turn disposed about a core which is mounted to a frame. The frame includes a base portion and a leg portion which extends upwardly therefrom at a right angle. A support collar extends upwardly from the upper surface of the frame base portion and encircles a mounting opening which extends through the frame base portion. The core is inserted downwardly into press-fitted engagement with the frame within the support collar and mounting opening. Insertion continues until the height of the top of the core correlates directly with a position on the frame leg portion, such as the pivot axis of an armature. The underside of the frame base portion remains smooth.
    Type: Grant
    Filed: November 26, 1984
    Date of Patent: June 7, 1988
    Assignee: United Technologies Corporation
    Inventors: Robert E. Prouty, Ronald W. Goodrich
  • Patent number: 4688012
    Abstract: Upon excitation of the electromagnet, a clapper armature is pulled into an operating gap, being increasingly additionally attracted by the pole of an electromagnet yoke leg.The motional plane of the clapper armature extends perpendicularly to the plane of the magnetic flux of the yoke structure of the electromagnet.
    Type: Grant
    Filed: September 22, 1986
    Date of Patent: August 18, 1987
    Assignee: International Business Machines Corporation
    Inventors: Armin Bohg, Ludwig Fischer, Bruno Gantz, Kurt Hartmann, Gerhard Wolfert
  • Patent number: 4670727
    Abstract: The relay has a flat armature (6) carried at one bearing edge (15) of a yoke arm (5a), which is attached via an armature retaining spring (8). In order to protect the armature against shocks, the exposed section (18) of the armature retaining spring (8) engages with one or several extensions (6a) of the armature. In the event of shocks occurring in the direction parallel to the coil axis, the armature is only able to move slightly and then it knocks against the terminal edges (16) of the exposed spring sections (18).
    Type: Grant
    Filed: July 11, 1986
    Date of Patent: June 2, 1987
    Assignee: Siemens Aktiengesellschaft
    Inventors: Erwin Muller, Alois Ruhland
  • Patent number: 4658232
    Abstract: An electromagnetic device for use in, for example, the diaphragm control of a camera. The electromagnetic device includes an electromagnet, an armature, an armature shaft and a restricting member for inclining the armature with respect to the armature shaft, whereby even if the armature shaft is not parallel with the attraction face of the electromagnet, holding the armature attraction by the electromagnet is certain.
    Type: Grant
    Filed: July 22, 1985
    Date of Patent: April 14, 1987
    Assignee: Canon Kabushiki Kaisha
    Inventor: Ichiro Ohnuki