With Plural Armatures Patents (Class 335/267)
  • Patent number: 10058790
    Abstract: In some examples, a motor assembly kit includes a magnet, a coil, a bearing, and a flat assembly. The flat assembly includes a base structure, a first plurality of components, and a second plurality of components. The first plurality of components are removable from the flat assembly to construct a magnet support to support the magnet above the base structure. The second plurality of components are removable from the flat assembly to construct a coil cradle to support the coil above the base structure.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: August 28, 2018
    Inventor: Lee Zamir
  • Patent number: 10036608
    Abstract: A weapon emulator comprising: a body; an electro-mechanical actuator coupled to the body; a firing indicator coupled to the electro-mechanical actuator and designed to move relative to the body when the electro-mechanical actuator is activated.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: July 31, 2018
    Inventor: Jon E. Hunt
  • Patent number: 9281733
    Abstract: The instant invention teaches a monostable shutter with magnetic blade return using a bistable actuator with blade motion constrained to provide drive force in a single direction and permits the use of compact bistable coil for continuous use by a circuit that applies a high voltage at the beginning of drive that decays to a lower voltage to prevent coil burn out.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: March 8, 2016
    Assignee: Melles Griot
    Inventor: Stanley W. Stephenson
  • Publication number: 20140225691
    Abstract: A solenoid device is provided which is equipped with a first and a second magnetic coil and a first, a second, and a third magnetic circuit, and designed so that when the second magnetic coil is deenergized while the first magnetic coil is kept energized following a dual-energized mode in which the first and second magnetic coils are energized, the magnetic flux ? flowing through the second magnetic circuit disappears. The magnetic flux ? of the first magnetic coil, thus, continues to flow though the first and third magnetic circuits, thereby creating a magnetic force to keep a first plunger and a third plunger attracted. This enables the plungers to be attracted independently from each other and results in a decrease in power consumption of the magnetic coils when the plurality of plungers are attracted simultaneously.
    Type: Application
    Filed: February 10, 2014
    Publication date: August 14, 2014
    Applicants: ANDEN CO., LTD., NIPPON SOKEN, INC.
    Inventors: Ken TANAKA, Osamu DAITOKU, Tomoaki TANAKA
  • Patent number: 8777180
    Abstract: A solenoid valve comprising a magnetic drive having at least two parallel coils which are arranged with their end faces lying between two spaced apart magnetic yoke plates, a stationary magnetic plug and an axially movable magnetic core each being arranged in each coil which together with the magnetic yoke plates form a ferromagnetic circuit. At least one further magnetic element which is firmly connected to a respective yoke plate on two opposite ends is arranged between the magnetic plates.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: July 15, 2014
    Assignee: Buerkert Werke GmbH
    Inventors: Ralf Doerr, Heiko Engler, Martin Ottliczky, Sebastian Kahl
  • Patent number: 8754730
    Abstract: An electromagnetically operated switching device according to the present invention includes a pair of electromagnetically operated mechanisms for driving a main circuit contact of a switch via a link mechanism symmetrically arranged with respect to an operational center axis, and a length of a spring retaining plate can be regulated in accordance with a change of a link ratio, which is caused by a design change of the main circuit contact.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: June 17, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Toru Kimura, Tomotaka Yano
  • Patent number: 8729992
    Abstract: An electromagnetic actuator device has a core unit with a coil device designed to cooperate with armature units displaceably guided relative to the core unit in response to current applied to the coil device, wherein the core unit is designed to cooperate with a plurality of spatially separated plunger units of the armatures so that an electromagnetic interaction takes place with the plurality of plunger units in response to current applied to a coil of the coil device.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: May 20, 2014
    Assignee: ETO Magnetic GmbH
    Inventors: Thomas Schiepp, Oliver Thode
  • Patent number: 8698094
    Abstract: A permanent magnetic lens array for charged-particle focusing includes a first sheet of soft magnetic material, wherein the first sheet of soft magnetic material includes a plurality of snorkel cone protrusions arranged in an array pattern, wherein each snorkel cone is axially symmetric and includes an opening passing from a first surface of the first sheet of soft magnetic material to a second surface of soft magnetic material, and a plurality of permanent magnetic elements, wherein each permanent magnetic element is axially symmetric and arranged concentrically with a snorkel cone of the first sheet of soft magnetic material, wherein the snorkel cones of the first sheet of soft magnetic material and the plurality of permanent magnetic elements are configured to form a plurality of magnetic lenses, wherein each magnetic lens has a magnetic field with an axial component oriented perpendicular to the first surface of the soft magnetic material.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: April 15, 2014
    Assignee: KLA-Tencor Corporation
    Inventors: Christopher Sears, Mehran Nasser-Ghodsi, Khashayar Shadman
  • Patent number: 8400243
    Abstract: There is an electromagnetic switch for a starter includes a first and second electromagnet and a frame and a cover. The first and second electromagnets are set alongside in the frame. The first and second electromagnets are configured to change a position with respect to the cover by rotating about the axis with respect to the frame.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: March 19, 2013
    Assignee: Denso Corporation
    Inventors: Tarou Okada, Mitsuhiro Murata, Takahisa Inagaki, Masami Niimi, Kiyokazu Haruno
  • Patent number: 8203404
    Abstract: A vehicle power system includes an electrical power source, an electrical bus, and a contactor electrically connected with the electrical power source and electrical bus. The contactor includes first and second poles, dual plungers each operatively associated with one of the first and second poles, and an electromagnetic coil configured to cause at least one of the dual plungers to move if the coil is energized.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: June 19, 2012
    Assignee: Ford Global Technologies, LLC
    Inventors: Philip Michael Gonzales, Benjamin A. Tabatowski-Bush
  • Patent number: 8085119
    Abstract: The system contains a first planar permanent magnet having a first direction of magnetization and a first opening formed therein. A second planar permanent magnet has a second direction of magnetization and a second opening formed therein. The second opening is axially aligned with the first opening. The direction of magnetization of the first planar permanent magnet opposes the direction of magnetization of the second planar permanent magnet. A plurality of stationary coils are provided, wherein at least one of the stationary coils is located within the first opening and at least one of the stationary coils is located within the second opening. A pair of extension members traverses the first opening and the second opening. A magnetizable slug is integral with each of the extension members.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: December 27, 2011
    Assignee: Engineering Matters Inc.
    Inventors: Christopher J. Corcoran, Andrew M. Wright, David B. Cope
  • Patent number: 8028971
    Abstract: An electromagnetic safety valve that includes a reel, a support that has a first segment that is inserted in the interior of the reel and which acts as a fixed core, a movable core that moves in the interior of the reel, a sealing member connected to one end of the movable core that opens a passage of gas overcoming the opposition of a spring when the valve is energised, and a casing that encloses the reel. The support has a second segment that includes a base upon which the reel is supported, the base including axial through holes for the respective passage of a phase wire and a mass wire. The second segment also includes a coaxial housing wherein a male terminal is inserted.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: October 4, 2011
    Assignee: Mondragon Componentes, S.Coop.
    Inventors: Jose Antonio Guirado Tristan, Marcos Pablo Curto, José Maria Lasa Elexpuru
  • Patent number: 7871058
    Abstract: A hot melt adhesive or other thermoplastic material dispensing valve assembly comprises a pair of oppositely disposed electromagnetic solenoid assemblies which alternatively act upon a pair of armatures which are fixedly mounted upon a valve stem, upon which is fixedly mounted a valve member, so as to rapidly and assuredly control the reciprocal movements of the valve stem, and the valve member attached thereto, between its unseated or OPENED position and its seated or CLOSED position. A coil spring also biases the valve stem and the valve member toward the seated or CLOSED position such that when both of the electromagnetic solenoid assemblies are de-energized, the coil spring maintains the valve member at its seated or CLOSED position upon the valve seat.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: January 18, 2011
    Assignee: Illinois Tool Works Inc.
    Inventors: James W. Robinson, C. Randolph Tiller, Richard L. Edwards
  • Publication number: 20100277265
    Abstract: Pressure balanced spool poppet valves with printed actuator coils minimize valve leakage and facilitate efficient manufacturing and reliable operation. The spool poppet valves may be configured like a conventional spool valve, but further include a poppet valve at one end of the spool to proved much better sealing when the poppet valve is closed. Various features are disclosed, including pressure balancing for high pressure operation. The printed actuator coils for the spool poppet valves are formed by the interconnection of conductive coils on each of multiple layers of a multiple layer printed circuit board, which circuit board may have a hole there through for accommodation of mechanical and/or magnet requirements, and may include similar printed actuator coils for one or more additional spool poppet valves as well as electronic devices associated with the operation thereof.
    Type: Application
    Filed: July 15, 2010
    Publication date: November 4, 2010
    Applicant: Sturman Digital Systems, LLC
    Inventors: Oded Eddie Sturman, Steven E. Massey
  • Patent number: 7487798
    Abstract: A bottom of a housing has a protruding support extending a predetermined distance toward a movable core, and the movable core has an annular boss extending a predetermined distance toward the housing. The annular boss is disposed in an annular space defined between the bottom of the housing and the protruding support of the housing.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: February 10, 2009
    Assignee: Keihin Corporation
    Inventors: Hideki Furuta, Shigeto Ryuen, Hidetoshi Watanabe, Satoshi Noda, Masahiro Watanabe
  • Patent number: 7301426
    Abstract: Electromagnetic actuator for operating at least one movable contact of a switch into a switched-on position or a switched-off position. The electromagnetic actuator (1) has a first magnetic circuit for making a movable (3) and a fixed (4) pole body move towards one another and a second magnetic circuit, separate from the first magnetic circuit, with a permanent magnet (9) and a retaining plate (10). A switching-off coil (15) operates to counteract the magnetic field in the second magnetic circuit so that the actuator (1) can return to a switched-off position. In the axial direction of the actuator (1), the switching-off coil (15) is positioned Gloser to the retaining plate (10) than the permanent magnet (9), as a result of which more effective operation of the actuator is possible. Furthermore, the actuator is constructed from cylindrical elements that are easy to produce and to assemble.
    Type: Grant
    Filed: April 22, 2004
    Date of Patent: November 27, 2007
    Assignee: Eaton Electric B.V.
    Inventor: Arend Jan Willem Lammers
  • Patent number: 7278593
    Abstract: A common rail fuel injector comprises a three-way control valve that controls the flow of high-pressure fuel to a fuel cavity for fuel injection. Specifically, when the control valve is transitioning to a first, on position, from a second, off position, high-pressure fuel is provided to both the fuel cavity and to a check control cavity, thereby preventing fuel injection until the control valve seats in the first, on position. Once seated in the first, on position, the control valve only provides high-pressure fuel to the fuel cavity allowing fuel injection to occur. To stop injection, the control valve is moved from the first, on position to the second, closed position. Once again, while the control valve is in the transition location between the two positions, high-pressure fuel is provided to both the fuel cavity and to the check control cavity thereby terminating injection.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: October 9, 2007
    Assignee: Caterpillar Inc.
    Inventors: Yongxin Wang, Ye Tian, Norman D. Knapp, Norval J. Wiemken
  • Patent number: 7191963
    Abstract: The injector has a cylindrical body, which houses an injection nozzle regulated by an injection valve provided with a moveable pin, a fuel supply line, an injection chamber communicating with the supply line, housing a lower portion of the pin and delimited below by a valve seat of the injection valve, a control chamber communicating with the supply line and housing an upper portion of the pin, and a control valve, which is capable of putting the control chamber in communication with a drain for the low-pressure fuel and is controlled by an electromagnetic actuator provided with a pair of electromagnets identical with each other and arranged mechanically in series with each other so that their respective thrust forces are added together.
    Type: Grant
    Filed: November 9, 2004
    Date of Patent: March 20, 2007
    Assignee: Magneti Marelli Powertrain S.p.A.
    Inventors: Andrea Cobianchi, Fabio Cernoia
  • Patent number: 7145424
    Abstract: What is disclosed is a lifting magnet assembly for a servo valve or control valve comprising a proportional magnet which acts on a valve spool of the control valve or servo valve through a tappet. Between the spool and the proportional magnet a failsafe magnet is provided which is penetrated or encompassed by the tappet of the proportional magnet.
    Type: Grant
    Filed: May 3, 2004
    Date of Patent: December 5, 2006
    Assignee: Bosch Rexroth AG
    Inventors: Roland Schempp, Lars Olems
  • Patent number: 6891458
    Abstract: A lock may be constructed with a locking mechanism that uses either a cam assembly with a cylinder plug perforated by a centrally positioned keyway or a cylinder plug. The locking mechanism may be equipped with a dual armature solenoid. With the dual action solenoid constructed with a single wire coil, the distal ends of coaxially aligned armatures engage opposite axially aligned detents to maintain the lock in its locked state, while application of a potential difference across the coil draws both armatures away from their corresponding detents and toward the bore of the coil, thereby placing the lock into its unlocked state.
    Type: Grant
    Filed: April 2, 2001
    Date of Patent: May 10, 2005
    Inventors: Richard G. Hyatt Jr., Douglas E. Trent
  • Patent number: 6823757
    Abstract: An electromagnetic solenoid comprising a cylindrical body yoke, a front yoke arranged on one end side of the body yoke, a fixed yoke formed integrally with the front yoke, a back yoke arranged on the other end side of the body yoke, a center yoke arranged at the central portion of the body yoke, a first electromagnetic coil arranged along the inner peripheral surface of the body yoke between the center yoke and the front yoke, a second electromagnetic coil arranged along the inner peripheral surface of the body yoke between the center yoke and the back yoke, an operation rod arranged being inserted through the front yoke and the fixed yoke so as to move, a first moving yoke mounted on an end of the operation rod on the side of the back yoke, a second moving yoke arranged on the operation rod so as to slide between the first moving yoke and the fixed yoke, and a limiting means for limiting the second moving yoke from moving toward the back yoke at an intermediate position in a range in which the first moving y
    Type: Grant
    Filed: October 3, 2003
    Date of Patent: November 30, 2004
    Assignees: Isuzu Motors Limited, Transtron Inc.
    Inventor: Kazuhiko Kobayashi
  • Patent number: 6538540
    Abstract: A magnetic system for an electromagnetic relay comprises at least two iron pieces 15, 16 extending in parallel through the entire length of one common coil 18, each iron piece being part of its own magnetic circuit for operating an armature which is disposed in this magnetic circuit to operate ah associated contact system. The spacing between the iron pieces 15, 16 inside the coil 18 is substantially smaller than the largest cross-sectional dimension of each iron piece 15, 16 in order to make maximum use of the magnetic flux produced by the coil 18 with minimum loss and minimum stray flux.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: March 25, 2003
    Assignee: Matsushita Electric Works (Europe) Aktiengesellschaft
    Inventors: Johannes Oberndorfer, Friedrich Plappert, Herbert Elsinger
  • Patent number: 6526928
    Abstract: The multiple actuator for an electromechanically actuated valve has a housing and a plurality of armature shafts extending through the housing. Each of the armature shafts carry an armature, and two electromagnets which both lie inside the housing. Two springs act on each armature, forcing it into a position of repose between the electromagnets. This configuration makes optimum use of the available basic area above a valve which is to be driven. The armature has a maximum surface area, and optimum dissipation of heat through thermal conduction is possible via the corresponding housing underside.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: March 4, 2003
    Assignees: Siemens Aktiengesellschaft, Bayerische Motoren AG
    Inventors: Erwin Bauer, Albert Hoerl-Liegl, Ferdinand Loebbering, Stefan Loidl
  • Patent number: 6222294
    Abstract: In a preferred embodiment, an actuator, including: a shaft (34); a solenoid (24), having a coil (40) and a core (42), disposed at a first selected position on the shaft, with the core being fixedly attached to the shaft such that energization of the coil will cause the shaft to move axially; and a rotary motor (22), having a stator (30) and a rotor (32), disposed at a selected second position on the shaft, with the shaft passing through the rotor, an external surface of the shaft and an internal surface of the rotor having complementary engaging surfaces such that rotation of the rotor will cause rotation of the shaft and axial motion of the shaft will be isolated from the rotor.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: April 24, 2001
    Assignee: Tri-Tech, Inc.
    Inventors: Timothy D. Stacy, Albert Palmero
  • Patent number: 6175292
    Abstract: An electrical park latch actuator for the automatic transmission selector lever of a road vehicle, the actuator including a support member, first and second electromagnet windings carried by a common electromagnet core of the support member, and first and second plungers moveable relative to the support member, and responsive to energization of the first and second electromagnet windings respectively, said first and second plungers being positioned with their movement axes parallel and part of said second plunger being slidably received within said first plunger.
    Type: Grant
    Filed: September 16, 1999
    Date of Patent: January 16, 2001
    Assignee: Kelsey-Hayes Company
    Inventor: James M Gruden
  • Patent number: 5929730
    Abstract: A single or double relay is provided. The relay has a base and a coil body. Each relay has a coil with an axis parallel to the bottom side of the base, an angled yoke and a plate-shaped armature. The armature is connected to a contact spring that is split into two fork-like legs. A contact leg carries a movable contact and a terminal leg that is connected to a spring carrier in the region in front of the movable armature end. With the double relay, the two armatures lie parallel at opposite ends of the base. The design yields a simple assembly with good heat dissipation particularly for a double relay for high switching currents.
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: July 27, 1999
    Assignee: Siemens Aktiengesellschaft
    Inventor: Horst Hendel
  • Patent number: 5909166
    Abstract: A safety switch includes a spring-biased locking pin which is displaceable axially inside a switch housing by a lifting magnet against the biasing force of the spring to switch a switching element between a blocking position and a release position, and a retention magnet which holds the locking pin in the release position when the lifting magnet is de-energized.
    Type: Grant
    Filed: April 2, 1998
    Date of Patent: June 1, 1999
    Assignee: Hans Bernstein Spezialfabrik fur Schaltkontakte
    Inventors: Rolf Wecke, Heinz Scharlibbe, Dirk Dreyer, Joachim Ulfik
  • Patent number: 5889454
    Abstract: An electromagnetic relay and methods for its manufacture are provided. The relay has a coil body with flanges and with at least one winding disposed between the flanges. A rod-shaped core is respectively arranged axially inside each winding. The yoke is secured against motion in the longitudinal direction and against pivotal movement in a coil flange by mounting elements. In addition, the first end of the core is connected on the side surface of the first yoke leg by welding or soldering. A double relay with first yoke legs disposed next to each other in parallel fashion is preferably created, whereby the core-yoke connection is produced in a simple manner and a good magnetic transition is ensured.
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: March 30, 1999
    Assignee: Siemens Aktiengesellschaft
    Inventor: Horst Hendel
  • 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: 5422617
    Abstract: A multiple coil, multiple armature solenoid is disclosed. The solenoid has; multiple armatures slidably disposed on a common slip shaft, with separate coils disposed about the corresponding armatures. The conductor coils, through magnetic induction, displace the armatures through respective linear strokes along the slip shaft. By varying the stroke length of the various armatures, it is possible to use an armature that travels through a short stroke length to generate kinetic energy that is transferred through the slip shaft to actuate an armature that must travel through a longer stroke length. In this manner, the problem of a high breakaway force associated with a long stroke armature is resolved.
    Type: Grant
    Filed: May 28, 1993
    Date of Patent: June 6, 1995
    Assignee: IMC Magnetics Corp.
    Inventor: Michael H. Brown
  • Patent number: 5394132
    Abstract: A motion producing device in the form of a linear actuator, circular pump, or a robotic or prosthetic limb which functions to produce many kinds of work is provided. The device includes a linear series of alternately spaced fixed and polarity reversible magnets. The fixed and polarity reversible magnets may have more than one magnet assembled as a force unit of magnets of fixed polarity or reversible polarity which is surrounded by a rigid electrically insulating material and that carries rigid electrical conductors in the form of tubes. Between each magnetic force unit is an elastic electrically insulating material allowing expanding or shrinking of the distance between the magnetic force units in accordance with the polarity reversal of the reversible magnetic force units. The elastic expansion or contraction material carries flexible elastic tubes that connect with the rigid tubes to hold a current carrying electrolyte to carry electrical current from a D.C.
    Type: Grant
    Filed: July 20, 1993
    Date of Patent: February 28, 1995
    Inventor: James E. Poil
  • Patent number: 4736774
    Abstract: An electro mechanic valve device for an ink jet printer comprising at least two valves arranged in a valve housing. Each valve is associated with a magnet core having a winding and a valve pipe having a valve armature and a counter armature. The windings at adjacent magnet cores are arranged alternatingly, a first one at one side of the row of valve pipes and the next one at the opposite side.
    Type: Grant
    Filed: July 1, 1987
    Date of Patent: April 12, 1988
    Assignee: Markpoint System AB
    Inventor: Jiri Vonasek
  • Patent number: 4708317
    Abstract: The electromagnetic actuator has fixed and movable electromagnets. Each of both electromagnets has a plurality of slots formed in a substantially flat plane of a core member, and coil elements disposed in each slot so that directions of current in each slot are reversed alternately. The fixed and movable electromagnets are housed in a housing, with the respective slot-formed planes facing each other. Both electromagnets are excited at the same time, and resultant magnetic attraction or repulsion between both electromagnets causes the movable magnet to move. The movement of the movable magnet is derived by pickup means. By means of the utilization of attraction and repulsion between the electromagnets, a high speed operation can be achieved.
    Type: Grant
    Filed: December 11, 1985
    Date of Patent: November 24, 1987
    Assignee: Diesel Kiki Co., Ltd.
    Inventor: Yasuhiro Hiyama
  • Patent number: 4651640
    Abstract: The invention relates to a print hammer bank of electromagnetic print hammer actuators in modular design of the type which includes a plurality of actuators each of which comprises a stator formed in two halves, each half including an electromagnet and a plurality of pole pieces, and means for positioning the stator halves relative to each other so that the ends of the pole pieces of the two halves are spaced apart in pairs so as to form a plurality of aligned operating gaps. The armature elements are designed so that the volume of each armature element is of the order of the volume of the associated operating gap.
    Type: Grant
    Filed: September 4, 1985
    Date of Patent: March 24, 1987
    Assignee: International Business Machines Corporation
    Inventors: Armin Bohg, Kurt Hartmann
  • Patent number: 4556858
    Abstract: The bistable electromagnet comprises a magnetic circuit partially surrounded by a winding constituted by a series of links (M1, M2, M3, M4, M5, M6) interconnected by air gaps, the links of a first type being movable relative to the other links of a second type, certain types of links comprising a permanent magnet (1, 3, 5, . . . ) provided on its pole surfaces with pole pieces (7, 8; 11, 12; 15, 16; . . . ) whose ends define two air gap zones with the neighboring links of the other type.
    Type: Grant
    Filed: October 30, 1984
    Date of Patent: December 3, 1985
    Assignee: La Telemecanique Electrique
    Inventor: Gerard Koehler
  • Patent number: 4546955
    Abstract: A two-stage solenoid valve uses a pair of stacked coaxial armatures separated by a predetermined gap which is maintained by a first spring therebetween. A coaxial connecting rod extends between a first armature and the second armature and is attached to the first armature. A head on the unattached end of the rod bears against a bottom surface of a recess in the second armature to limit the expansion of the first spring. A second spring is arranged to contact the head of the rod and to extend therefrom to a fixed plug in the end of a cylindrical housing surrounding the first and second armatures. The first armature is provided with a fluid sealing surface on a first end for sealing an adjacent fluid port in the valve in response to the spring force exerted by the second spring. A first and a second solenoid coil assembly are coaxially stacked to surround the cylindrical sleeve housing adjacent to respective ones of the first and second armatures.
    Type: Grant
    Filed: October 14, 1982
    Date of Patent: October 15, 1985
    Assignee: Honeywell Inc.
    Inventors: Kenneth E. Beyer, Wilhelm H. Horlacher
  • Patent number: 4516102
    Abstract: An electrically-powered expansion/contraction apparatus is disclosed. The apparatus preferably contracts and expands due to magnetic interaction within a plurality of motor units (20) or (21). Each motor unit (20) or (21) is in turn made up of a pair of interlinked subunits (22), (24). The subunits (22), (24) include inner elements (22) and outer elements (24) which contract when unlike magnetic poles are juxtaposed and expand when opposite poles are proximate to one another. A control circuit (44) for each subunit (22), (24) selectively prevents current flow or directs it in one of two directions to appropriately empower electromagnets (26) on the inner elements (22). Outer elements (24) can either include permanent magnets (40) or electromagnets (27). Mechanical stop means are provided by the nature of the interlinked design to give the motor unit (20) or (21) an "all-or-none" behavior akin to that of natural muscle.
    Type: Grant
    Filed: November 2, 1983
    Date of Patent: May 7, 1985
    Inventor: Mark C. Rask
  • Patent number: 4512627
    Abstract: Actuating apparatus for an optical fiber switch in which a single fiber array (19) retained in a retaining block (20, 21) is movable within a housing (17) to align the single array (19) with one (10) or the other (11) of two fixed fiber arrays. A shuttle element (25) slidably extending through the housing (17) has provided at each end a disc (30, 31) the inner surfaces of which control the movement of a pair of push-rods (42, 43), also extending through the housing (17), which push-rods (42, 43) are bearable on opposite sides of the retaining blocks (20, 21). Reciprocal movement of the shuttle element (25) causes the same movement of the push-rods (42, 43) to move the movable fiber array (19) between its two switch positions. Movement of the shuttle element (25) is caused by the selective energization of two electromagnets (50, 51) mounted in opposite walls (40, 41) of an hermetically sealed outer housing (18).
    Type: Grant
    Filed: December 13, 1982
    Date of Patent: April 23, 1985
    Assignee: AT&T Bell Laboratories
    Inventors: Wendel E. Archer, James M. Luther, Michael L. Thieken
  • Patent number: 4503411
    Abstract: A solenoid-operated plunger device comprising a frame and a solenoid coil contained within the frame. Two or more movable plungers, separated by a barrier, are located within the solenoid coil. The plungers project the ends of the solenoid coil, and are slidable within the solenoid coil on parallel axes. A return spring is connected to each plunger for controlling the movement of the plunger.
    Type: Grant
    Filed: November 23, 1983
    Date of Patent: March 5, 1985
    Assignee: Cooper Industries
    Inventor: Warren A. Lofstrand
  • Patent number: 4491812
    Abstract: A particular overload protection is provided for a circuit which is normally closed by an electromagnetic circuit breaker energized by a relatively low level holding current. The overload protection is particularly provided through an auxiliary electromagnetic system connected to be responsive to the current in the circuit governed by the circuit breaker whereby the auxiliary electromagnetic system includes an armature carrying a plunger penetrating the circuit breaker such that upon occurence of an overload the auxiliary electromagnetic system is energized and its plunger pushes the armature of the circuit breaker into a contact opening disposition.
    Type: Grant
    Filed: January 23, 1984
    Date of Patent: January 1, 1985
    Assignee: Schaltbau Gesellschaft mbH
    Inventor: Anton Happach
  • Patent number: 4450863
    Abstract: An automatic dishwasher includes a water inlet line, a flow control valve assembly, a wash water introducing means for introducing wash water into a container which is adapted to receive dishes, and control means for selectively controlling the flow control valve assembly. The flow control valve assembly includes a first flow control valve which is selectively actuated by a first solenoid coil and a second flow control valve which is selectively actuated by a second solenoid coil. A first ferromagnetic member is disposed between a first end of the solenoid coils and a second ferromagnetic member is disposed between the other end of the solenoid coils. The solenoid coils are so interconnected that when an actuating potential is applied across them, they are electrically in series. The series connection of the coils allows the coils to be configured such that a significant saving in the cost of coil wire is achieved over parallel connected coils.
    Type: Grant
    Filed: May 13, 1981
    Date of Patent: May 29, 1984
    Assignee: Eaton Corporation
    Inventor: Wade R. Brown
  • Patent number: 4441521
    Abstract: An automatic dishwasher includes a water inlet line, a flow control valve assembly, a wash water introducing means for introducing wash water into a container which is adapted to receive dishes, and a control for selectively controlling the flow control valve assembly. The flow control valve assembly includes a first flow control valve which is selectively actuated by a first solenoid coil and a second flow control valve which is selectively actuated by a second solenoid coil. A first ferromagnetic member is disposed between a first end of the solenoid coils and a second ferromagnetic member is disposed between the other end of the solenoid coils. The solenoid coils are so interconnected that when an actuating potential is applied across them, (a) they generate magnetic fields of the opposite polarity, and (b) they are electrically in series.
    Type: Grant
    Filed: May 13, 1981
    Date of Patent: April 10, 1984
    Assignee: Eaton Corporation
    Inventors: Wade R. Brown, Thomas N. Gumble
  • Patent number: 4371857
    Abstract: An electromagnetic ram actuator, the electromagnet of which consists of two symmetrically designed magnetizable yoke halves. The facing pole ends of the yoke halves are in each case essentially semicircularly recessed, forming two aligned essentially circular operating gaps. Between the operating gaps a ram is arranged which is shiftable in the direction of their line of alignment and whose cross-section is adapted to the area of the operating gaps. The ram comprises two armature disks of magnetizable material and a spacer element arranged therebetween consisting of predominantly non-magnetizable material. One armature disk is associated with each operating gap. The armature disks are geometrically designed in such a manner that their volume is of the order of the operating gap volume. In the starting position of the ram the armature disks are positioned in front of the operating gaps of the electromagnet in its non-excited state.
    Type: Grant
    Filed: May 7, 1981
    Date of Patent: February 1, 1983
    Assignee: International Business Machines Corporation
    Inventors: Armin Bohg, Kurt Hartmann
  • Patent number: 4361309
    Abstract: An electromagnetic valve actuator has two sets of exciting coils and movable cores and a rod having an end secured to the first movable core. The other end of the rod extends slidably through the second movable core which is connected to a valve member cooperative with a valve seat to control a fluid flow therethrough. A first spring biases the rod and the first movable core away from the valve member, whereas a second spring biases the valve member and the second movable core away from the rod. The arrangement is such that the valve member is positioned at a first position in contact with the valve seat when the first coil is energized, such that the valve member is positioned at a second position remote from the valve seat when the second coil is energized and such that the valve member is positioned at a third position between the first and second positions when both coils are deenergized.
    Type: Grant
    Filed: June 19, 1981
    Date of Patent: November 30, 1982
    Assignee: Niipondenso Co., Ltd.
    Inventor: Ichita Sogabe
  • Patent number: 4354662
    Abstract: This invention relates to force motors that are used in single stage hydraulic valves that are responsive to electrical input signals. The inertia of the force motor is reduced by having only a small portion of the force motor move. By reducing the mass of the moving parts of the force motor the force motor may be used with an increased speed of response.
    Type: Grant
    Filed: April 30, 1980
    Date of Patent: October 19, 1982
    Assignee: Sanders Associates, Inc.
    Inventor: Thomas W. Thompson
  • Patent number: 4240056
    Abstract: A solenoid actuator having a plurality of electromagnets mountably oriented within a housing. The actuator further includes an armature movably disposed within the housing having a like plurality of magnetically responsive members disposed at determinable distances from each electromagnet and wherein each magnetically responsive member is telescopically received one into the other.
    Type: Grant
    Filed: September 4, 1979
    Date of Patent: December 16, 1980
    Assignee: The Bendix Corporation
    Inventor: Endre A. Mayer
  • Patent number: 4191248
    Abstract: A tandem solenoid fail-safe sub-surface safety cut-off valve for fluid wells controllable from the surface and suitable for installation at substantially greater depths than prior constructions. The valve assembly may be installable and retrievable either via wire line or tubing techniques and utilizes tandem electromagnetic means to operate either a flapper or a ball cut-off valve. The solenoid coils embrace a landing nipple portion of the tubing string or the tubing string itself and hold either type of cut-off valve open against spring pressure only so long as the coils are energized thereby providing surface control of the safety cut-off valve normally and assurance of closing of this valve by energy stored in spring means in the event of power failure through accident or some catastrophe as well as automatic closure if flow velocity increases beyond a predetermined safe value.
    Type: Grant
    Filed: January 3, 1978
    Date of Patent: March 4, 1980
    Inventors: Donald L. Huebsch, Louis B. Paulos