With Magnetic-hold Control Means (e.g., Means To Control The Hold Strength) Patents (Class 335/295)
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Publication number: 20130222091Abstract: A detachment system includes a first piece of ferromagnetic material, a shunt plate, and at least one simple machine. The first piece of ferromagnetic material has a first side and a second side opposite the first side and has magnetically printed field sources that extend from the first side to the second side. The magnetically printed field sources have a first multi-polarity pattern. The first side of the first piece of ferromagnetic material is magnetically attached to a second piece of ferromagnetic material. The shunt plate is disposed on the second side of the first piece of ferromagnetic material. The shunt plate routes magnetic flux through the first piece of ferromagnetic material from the second side to the first side of the first ferromagnetic material. The at least one simple machine is configured to amplify an applied force into a detachment force to create an angled spacing between the first piece of ferromagnetic material and the second piece of ferromagnetic material.Type: ApplicationFiled: February 27, 2013Publication date: August 29, 2013Applicant: Correlated Magnetics Research, LLCInventor: Correlated Magnetics Research, LLC
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Patent number: 8516688Abstract: An assembly includes a cylindrical magnet assembly, which includes comprises at least one coil mounted on a former. The assembly also includes a bore tube with a number of radially-directed retaining protrusions formed in a material of the bore tube, each of the number of radially-directed retaining protrusions configured to bear against a periphery of a corresponding cavity in the former.Type: GrantFiled: September 14, 2012Date of Patent: August 27, 2013Assignee: Siemens Plc.Inventor: Russell Peter Gore
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Patent number: 8446242Abstract: A mechanical linkage exerts a mechanical force on a permanent magnet to substantially counterbalance the magnetic force attracting the permanent magnet to a ferrous target surface.Type: GrantFiled: June 9, 2010Date of Patent: May 21, 2013Assignee: The Charles Stark Draper Laboratory, Inc.Inventor: Daniel I. Harjes
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Patent number: 8430247Abstract: Method for handling microparticles in such a manner, that at least two treatment steps are performed for microparticles in the same vessel without moving the particles to another vessel. There are organs in the device for changing the solution without having to move the microparticles to another vessel.Type: GrantFiled: November 18, 2011Date of Patent: April 30, 2013Assignee: BioControl Systems, Inc.Inventors: Matti Korpela, Kenneth Rundt
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Publication number: 20130043630Abstract: A magnetic worktable includes a worktable body and a plurality of magnetic devices disposed at a worktable body. Positions of the magnetic devices at the worktable body are variable. The magnetic devices are electrically connected to each other via a circuit, such that the magnetic devices can generate a magnetic attraction force when magnetized. The total area of the magnetic devices accounts for a small portion of the worktable body area, allowing a user to change the arrangement and quantity of the magnetic devices by modularization and according to the shape and processing method of a workpiece. Therefore, any workpieces can be fixed to the magnetic devices by magnetic attraction. Accordingly, the magnetic worktable incurs a low manufacturing cost and advantageously features high practicability.Type: ApplicationFiled: June 11, 2012Publication date: February 21, 2013Inventor: Richard WANG
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Patent number: 8350663Abstract: A method for creating and a device for a rotary switchable multi-core element, permanent magnet-based apparatus, for holding or lifting a target, comprised of two or more carrier platters, each containing a plurality of complementary first and second core elements. Each core element comprises permanent magnet(s) with magnetically matched soft steel pole conduits attached to the north and south poles of the magnet(s). Core elements are oriented within adjacent carrier platters such that relative rotation allows for alignment in-phase or out-of-phase of the magnetic north and south fields within the pole conduits. Aligning a first core element “in-phase” with a second core element, that is, north-north/south-south, activates that core element pair, allowing the combined magnetic fields of the pole conduits to be directed into a target. Aligning the core element pair “out-of-phase,” that is, north-south/south-north, deactivates that core element pair by containing opposing fields within the pole conduits.Type: GrantFiled: December 7, 2011Date of Patent: January 8, 2013Assignee: Creative Engineering Solutions, Inc.Inventor: Jim G Michael
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Publication number: 20120326819Abstract: A shielded magnetic attachment apparatus is provided, having engaged and disengaged configurations, and comprising: at least one magnet; a first casing comprising ferromagnetic material attached to one side of the at least one magnet; a second casing comprising ferromagnetic material operably magnetically attachable to the at least one magnet; and a release mechanism attached to either the first or second casing for transitioning the shielded magnetic attachment apparatus from the engaged to the disengaged configuration; wherein the shielded magnetic attachment apparatus is in the engaged configuration when the at least one magnet provides a magnetic force which acts to keep the shielded magnetic attachment apparatus in the engaged configuration, and the shielded magnetic attachment apparatus is in the disengaged configuration when not in the engaged position.Type: ApplicationFiled: June 21, 2012Publication date: December 27, 2012Applicant: THEY INNOVATE INC.Inventors: Danilo Dmitro MALANCZYJ, Jeffrey Nathan MCLARTY, Thiago Ike AVILA, Michael William James SINCLAIR
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Patent number: 8310324Abstract: Apparatus and methods for guiding one or more tools are provided. In at least one specific embodiment, the apparatus for guiding one or more tools can include an elongated member. The elongated member can have one or more switchable magnets disposed thereon.Type: GrantFiled: April 11, 2008Date of Patent: November 13, 2012Inventors: Will Harris, Gerald Dasbach
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Patent number: 8279032Abstract: A system for detachment of correlated magnetic structures includes first and second correlated magnetic structure having complementary coded magnetic sources; and a tool that applies a bias magnet field to cause a transition of the first and second magnetic structures from a closed state in which the first and second magnetic structures are attached to an open state in which the first and second magnetic structures are detached.Type: GrantFiled: March 22, 2012Date of Patent: October 2, 2012Assignee: Correlated Magnetics Research, LLC.Inventors: Larry W. Fullerton, Mark D. Roberts, Ryan Fechner, Kelly Loum
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Patent number: 8256098Abstract: A method for producing a switchable core element-based permanent magnet apparatus, used for holding and lifting a target, comprised of two or more carrier platters containing core elements. The core elements are magnetically matched soft steel pole conduits attached to the north and south magnetic poles of one or more permanent magnets, inset into carrier platters. The pole conduits contain and redirect the permanent magnets' magnetic field to the upper and lower faces of the carrier platters. By containing and redirecting the magnetic field within the pole conduits, like poles have a simultaneous level of attraction and repulsion. Aligning upper core elements “in-phase,” with the lower core elements, activates the apparatus by redirecting the magnetic fields of both pole conduits into the target. Anti-aligning upper core elements “out-of-phase,” with the lower core elements, deactivates the apparatus resulting in pole conduits containing opposing fields.Type: GrantFiled: February 22, 2012Date of Patent: September 4, 2012Assignee: Creative Engineering Solutions, Inc.Inventor: Jim G Michael
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Patent number: 8247204Abstract: Magnetic enrichment method, wherein the desired biological component is collected from a solution, which component is thereafter enriched in a liquid in such a manner that by means of the micro particles attached to the magnet or attached by means of at least one magnet at least one biological component is collected in a closed reactor vessel. Thereafter at least one biological component is enriched in such a manner that the desired component is released to the solution. The reactor unit is a closed vessel, wherein the prevailing conditions are controllable. The shape and the location of the magnet unit in the reactor unit are adjusted in a preferable manner to collect the desired biological component.Type: GrantFiled: October 20, 2004Date of Patent: August 21, 2012Assignee: BioControl Systems, Inc.Inventors: Matti Korpela, Kenneth Rundt
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Patent number: 8183965Abstract: A method and device for a switchable core element-based permanent magnet apparatus, for holding and lifting a target, comprised of two or more carrier platters containing core elements. The core elements are magnetically matched soft steel pole conduits attached to the north and south magnetic poles of one or more permanent magnets, inset into carrier platters. The pole conduits contain and redirect the permanent magnets' magnetic field to the upper and lower faces of the carrier platters. By containing and redirecting the magnetic field within the pole conduits, like poles have a simultaneous level of attraction and repulsion. Aligning upper core elements “in-phase,” that is, north-north/south-south with the lower core elements, activates the apparatus by redirecting the combined magnetic fields of the pole conduits into the target.Type: GrantFiled: April 9, 2010Date of Patent: May 22, 2012Assignee: Creative Engineering Solutions, Inc.Inventor: Jim G Michael
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Publication number: 20120092104Abstract: Method and device for self-regulated flux transfer from a source of magnetic energy into one or more ferromagnetic work pieces is provided. A plurality of magnets are disposed in a medium wherein gaps of predetermined distance are maintained between neighboring magnets. And the magnets we arranged such that magnetic flux exchange may take place between the magnets across the gaps and a ferromagnetic body in close vicinity or contact with the magnets.Type: ApplicationFiled: October 21, 2011Publication date: April 19, 2012Applicant: MAGSWITCH TECHNOLOGY WORLDWIDE PTY LTDInventor: Franz KOCIJAN
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Publication number: 20120092103Abstract: A stacked field emission system having an outer surface includes at least three field emission structure layers having a stacked relationship that defines a field characteristic of the outer surface. The mechanisms holds the at least three field emission structure layers such that a plurality of interface surfaces of the at least three field emission structure layers correspond to a plurality of interface boundaries between adjacent field emission structure layers. Each of the at least three field emission structure layers includes a plurality of field emission sources having positions, polarities, and field strengths in accordance with a spatial force function that corresponds to a relative alignment of the at least three field emission structures layers in the stacked relationship. A movement of at least one of the at least three field emission structures varies the field characteristics of the outer surface.Type: ApplicationFiled: September 27, 2011Publication date: April 19, 2012Inventors: Mark D. Roberts, Larry W. Fullerton
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Patent number: 8138868Abstract: A magnetically directed, self-assembled structure has a first body. The first body includes a single magnet or plurality of magnets disposed thereon to form a spatially variable magnetic field in a first predetermined pattern. A second body has a single magnet or plurality of magnets disposed thereon to form a spatially variable magnetic field in a second predetermined pattern. The second predetermined pattern is complementary to the first pattern. The first body is attracted to the second body with an attractive force greater than a mixture force such that the first body and second body are fully aligned to each other and bonded together.Type: GrantFiled: April 14, 2008Date of Patent: March 20, 2012Assignee: University of Florida Research Foundation, Inc.Inventor: David Patrick Arnold
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Patent number: 8106735Abstract: An electromagnetic attachment apparatus includes a power supply, an electromagnet module, and a rotatable module. The electromagnet module includes a coil and a core positioned in the coil. A mounting panel is attached to the core. A pair of electrically conductive blocks is attached to the mounting panel, and connected to the coil. The rotatable module is rotatably attached to the mounting panel, and includes a pair of electrically conductive pins connected to positive and negative electrodes of the power supply respectively. The rotatable module is rotatable to a first position in which the electrically conductive pins thereof contact the electrically conductive blocks for attaching a metal object, or a second position in which the electrically conductive pins thereof disengage from the electrically conductive blocks for releasing the metal object.Type: GrantFiled: July 29, 2009Date of Patent: January 31, 2012Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventor: Zhan-Yang Li
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Publication number: 20120013426Abstract: A fast anchoring magnetic holder including multiple attractive surfaces comprises a first magnet, a second magnet, a first insertion rod and a second insertion rod. The first magnet has a magnetic workstation surface. The second magnet has a magnetic anchor surface. The first and second magnets are stacked together. The first insertion rod and second insertion rod are respectively inserted into the first magnet and second magnet, and are turned to change distribution of the magnetic field of the first magnet and second magnet to alter the magnetic workstation surface and magnetic anchor surface from a non-magnetic state to a magnetic state to attract a working piece to a workstation.Type: ApplicationFiled: July 19, 2010Publication date: January 19, 2012Inventor: Wen-Hsuan CHIANG
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Publication number: 20110248806Abstract: A method and device for a switchable core element-based permanent magnet apparatus, for holding and lifting a target, comprised of two or more carrier platters containing core elements. The core elements are magnetically matched soft steel pole conduits attached to the north and south magnetic poles of one or more permanent magnets, inset into carrier platters. The pole conduits contain and redirect the permanent magnets' magnetic field to the upper and lower faces of the carrier platters. By containing and redirecting the magnetic field within the pole conduits, like poles have a simultaneous level of attraction and repulsion. Aligning upper core elements “in-phase,” that is, north-north/south-south with the lower core elements, activates the apparatus by redirecting the combined magnetic fields of the pole conduits into the target.Type: ApplicationFiled: April 9, 2010Publication date: October 13, 2011Applicant: CREATIVE ENGINEERING SOLUTIONS, INC.Inventor: Jim G. Michael
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Patent number: 8031038Abstract: The magnetic fixing device comprises a clamping plate having a fixing surface to which a clamping object is fixed and plural magnetic force generation mechanisms. The magnetic force generation mechanisms each comprise a magnetic material member facing the fixing surface, plural permanent magnets arranged around the outer periphery of the magnetic material member, a first Alnico magnet placed on the back of the magnetic material member, and a first coil for switching the polarity of the first Alnico magnet, and can be switched between the absorption state in which the clamping object is adsorbed and the non-absorption state in which the clamping object is not adsorbed. An operation state indication mechanism capable of presenting an indicator indicating that the plural magnetic force generation mechanisms are in the absorption state or in the non-absorption state is provided on the fixing surface or outer periphery of the clamping plate.Type: GrantFiled: June 26, 2007Date of Patent: October 4, 2011Assignee: Pascal Engineering CorporationInventor: Seiji Kimura
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Publication number: 20110234344Abstract: A magnetic attachment system for attaching a first object to a second object. A first magnet structure is attached to the first object and a second magnet structure is attached to the second object by the magnetic attraction between the first magnet structure and second magnet structure. The magnet structures comprise magnetic elements arranged in accordance with patterns based on various codes. In various embodiments, the code has certain autocorrelation properties, the code may be from a set of codes with low cross correlation; an attachment and a release configuration may be achieved by a simple movement of the magnet structures; the magnetic pattern may be configured to allow installation of a selected panel of a set of panels in a given location or orientation while rejecting the remaining panels of the set; or the magnetic pattern is configured using codes with low cross correlation.Type: ApplicationFiled: June 10, 2011Publication date: September 29, 2011Applicant: Cedar Ridge Research LLCInventors: Larry W. Fullerton, Mark D. Roberts, James Lee Richards
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Publication number: 20110156849Abstract: Method for influencing the magnetic coupling between two bodies (10, 12), which are at a distance from one another, characterized in that a controllable field displacement apparatus (13) which has a field displacement region is fitted between the two bodies (10, 12), and in that the magnetic field (11) between the two bodies (10, 12) is displaced in a predetermined manner from the field displacement region of the field displacement apparatus (13) by appropriately driving the field displacement apparatus (13).Type: ApplicationFiled: May 15, 2008Publication date: June 30, 2011Applicant: PHILIPPE SAINT GER AGInventors: Vadim Gogichev, Peter Smyslov, Jean Schlagenwarth
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Patent number: 7915986Abstract: A hinge assembly (20) including a first magnetic member (21) and a second magnetic member (22) is described. The polarities of opposing end surfaces of the first magnetic member and the second member are different. The second magnetic member is configured for rotating relative to the first magnetic member to generate a magnetic moment. In addition, an exemplary portable electronic device (100) equipped with the hinge assembly is also described.Type: GrantFiled: June 5, 2008Date of Patent: March 29, 2011Assignee: Chi Mei Communication Systems, Inc.Inventor: Pen-Uei Lu
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Publication number: 20110018659Abstract: An apparatus, system, and method for locking objects together comprises at least one pair of correlated magnets. First and second correlated magnetic field structures comprising the pair of correlated magnets are capable of being aligned such that an attractive force secures or locks two objects together. The apparatus, system, and method can be used to lock appliance and cabinet doors, drawers, covers for electrical outlets and light switches, and the like.Type: ApplicationFiled: October 1, 2010Publication date: January 27, 2011Applicant: CEDAR RIDGE RESEARCH, LLCInventors: Larry W. Fullerton, Mark D. Roberts, James L. Richards
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Publication number: 20110018660Abstract: An embodiment of the present invention provides a correlated magnet toilet seat cover lock which may include a first correlated magnetic field structure securely attachable to a toilet bowl, a second correlated magnetic field structure that is complementary to the first correlated magnetic field structure and securely attachable to a toilet seat cover, and wherein the first correlated magnetic field structure associated with the toilet bowl is capable of being aligned with the second correlated magnetic field structure attachable to the toilet seat cover such that the toilet bowl and the toilet seat cover produce an attractive force that secures the toilet seat cover to the toilet seat bowl.Type: ApplicationFiled: October 1, 2010Publication date: January 27, 2011Applicant: CEDAR RIDGE RESEARCH, LLCInventors: Larry W. Fullerton, Mark D. Roberts, James L. Richards
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Publication number: 20110018661Abstract: A child safety gate apparatus, system, and method comprises a barrier that is securable in a passageway and comprises at least one pair of correlated magnets capable of being aligned such that an attractive force secures or locks the gate.Type: ApplicationFiled: October 1, 2010Publication date: January 27, 2011Applicant: CEDAR RIDGE RESEARCH, LLCInventors: Larry W. Fullerton, Mark D. Roberts, James L. Richards
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Patent number: 7850142Abstract: A magnetic clamp (10) for use in clamping metal formwork in precast concrete manufacture includes a housing (12). A magnet (14) is displaceably arranged within the housing (12). A displacement mechanism (18) is displaceably arranged on the housing (12) to displace the magnet (14) relative to the housing (12). A force amplification mechanism (24) is connected to the magnet (14) and at least a portion of the force amplification mechanism (24) is interposed between the displacement mechanism (18) and the magnet (14).Type: GrantFiled: August 23, 2005Date of Patent: December 14, 2010Assignee: SRB Construction Technologies Pty. Ltd.Inventors: Robert Sladojevic, Craig Deleon, Steven Girotto
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Publication number: 20100237970Abstract: Preferred embodiments of the present magnetic locking system can be used for releasably locking a first component to a second component. In one embodiment, the locking system includes a ferro-magnetic member associated with the first component, where the ferro-magnetic member is made of a ferro-magnetic material, and a housing attached to the second component and positioned adjacent to the ferro-magnetic member. Preferably, the housing includes first and second blocks that sandwich an intermediate block. Further, the first and second blocks are each preferably made of a ferro-magnetic material and the intermediate block is made of a non-ferro-magnetic material. Additionally, there is also an aperture formed within the housing, with a permanent magnet rotatably seated within the aperture.Type: ApplicationFiled: January 12, 2010Publication date: September 23, 2010Applicants: CREDO TECHNOLOGY CORPORATION, ROBERT BOSCH GMBHInventor: Jie Liu
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Publication number: 20100237969Abstract: A magnetic device having a housing with a front wall. A first magnet assembly includes a north and south pole and a second magnet assembly also includes a north and south pole. The magnet assemblies are pivotally mounted in the housing and pivotal between a first position in which the north pole of the first magnet assembly and the south pole of the second magnet assembly face each other and are positioned adjacent the front wall of the housing, and a second position in which the north pole of the first magnet assembly and the south pole of the second magnet assembly face each other and are retracted from the front wall. An actuator pivots the magnet assemblies between their first and second positions while a spring urges the magnet assemblies toward the second position.Type: ApplicationFiled: March 17, 2009Publication date: September 23, 2010Inventor: Allan D. Crawshaw
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Patent number: 7793900Abstract: An exemplary magnetic clamp holder used for a mechanical arm, includes a housing (21), a magnetic structure (22), and two positioning pins (25). The housing includes an attaching portion (211), and a joining portion (213) fixed to the attaching portion, the attaching portion and the joining portion cooperatively defining a receiving cavity (218). The positioning pins are disposed on the attaching portion of the housing. The magnetic structure is received in the receiving cavity. The magnetic structure includes a permanent magnetic module (223), an electro-magnetic module (225), and a magnetic shield plate (227) disposed between the permanent magnetic module and the electro-magnetic module. The electro-magnetic module is able to create a magnetic field for neutralizing a magnetic field created by the permanent magnetic module.Type: GrantFiled: November 29, 2007Date of Patent: September 14, 2010Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Han Feng, Chun Li, Xiao-Yu Ma
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Publication number: 20100171578Abstract: The invention relates to a universally applicable detachable magnet holder with a fixed magnet and an opposite-lying magnet which can rotate about a point of rotation and which is provided with magnet pole surfaces, wherein each magnet pole surface comprises at least two poles which, when closed, attract each other and which, when open, repel each other once the rotatable magnet has been rotated by means of an actuation device. According to the invention, a distance element (7), made of a non-ferromagnetic material, is fixed to one of the magnet pole surfaces, whereby the bearing surface on the opposite magnet pole surface is a maximum ? of the surface and a centering engaging device (10a, 10b; 11) is arranged in the vicinity of the magnet poles in order to receive magnetic sheer forces.Type: ApplicationFiled: March 15, 2010Publication date: July 8, 2010Inventor: JOACHIM FIEDLER
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Publication number: 20100117773Abstract: An electro permanent magnetic apparatus with monolithic working face for holding workpieces magnetically or mechanically comprises a base plate and a ferrous monolithic working face. The base plate has a pocket or recess which houses reversible magnets and electrical windings; the working face has magnetic poles which are demarked by slots. On the opposite side of the working face recesses are provided beneath the slots for housing non-reversible permanent magnets.Type: ApplicationFiled: January 22, 2010Publication date: May 13, 2010Applicant: EAST COAST ENTERPRISERS LTD.Inventor: Uttam Sardia
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Patent number: 7710225Abstract: The present invention provides the actuator, which is capable of preventing biased abrasion by lowering a surface pressure at a contact portion of a movable element with a guide surface and increasing a movable range, in which a specified output force can be gained. Magnetic resistance of at least one of the surfaces (Y1, Y2) of first and second yoke parts (5, 6) corresponding to peripheral surfaces (P1, P2) of a plunger (7), on which magnetic flux acting surfaces are formed by energization, is unbalanced in the circumferential direction so as to act a resultant force of magnetic forces acting on the movable element in the radial direction eccentrically to a radial one end (E1) side.Type: GrantFiled: November 10, 2005Date of Patent: May 4, 2010Assignee: Shinano Kenshi Kabushiki KaishaInventor: Masahiko Uni
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Patent number: 7679362Abstract: A switch includes housing and a magnet that is mounted inside the housing. The magnet generates a magnetic field having magnetic flux. The switch further includes a flux concentration device that is located inside the housing and that selectively moves between first and second positions. An actuator assembly is located inside the housing and selects the first and second positions based on the input. A hall-effect device is located between the magnet and the flux concentration device and conducts a current having a first value when the magnetic flux is less than a predetermined magnetic flux threshold. The hall-effect device conducts current having a second current value when the magnetic flux exceeds the predetermined magnetic flux threshold. The first position communicates a first magnetic flux to the hall-effect device and the second position communicates a second magnetic flux that is different from the first magnetic flux to the hall-effect device.Type: GrantFiled: January 18, 2007Date of Patent: March 16, 2010Assignee: GM Global Technology Operations, Inc.Inventor: Jack P. Koski
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Patent number: 7623010Abstract: An electrical switch for connecting and breaking a circuit including a connecting and breaking mechanism for connecting and breaking the circuit provided with at least a set of movable contacts and stationary contacts; a electromagnetism drive mechanism for controlling the contacts to be actuated so as to realize closed circuit; a housing for accommodating the movable contact and stationary contact; an arc-extinguishing mechanism disposed in the housing and corresponded to the movable and stationary contact; a case connected to a base for accommodating the electromagnetism drive mechanism; a bedplate associated with the case; and a holding mechanism disposed on the bedplate for holding the contacts to connect the circuit, the electromagnetic holding mechanism is electromagnetic and has a set of electromagnetic attracting mechanism in which the movable iron core is made to be a pothook or a baffle mechanism, the movable iron core is attracted so that the pothook or baffle keeps the switch closed by means of hiType: GrantFiled: May 28, 2004Date of Patent: November 24, 2009Inventor: Ping Liu
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Patent number: 7622046Abstract: A magnetic transfer method for sorting, collecting, transferring or dosing microparticles (22) or magnetic particles either in the same liquid (23) or from one liquid (23a) into another (23b) by using a magnetic field. The transfer device (10) comprises a magnet (13) placed inside a protective coating (21), and the collection or dozing is accomplished by changing the magnetic field of the magnet (13). The changing of the magnetic field is effected by using a ferromagnetic body, such as a plate or tube (12), comprised in the transfer device, in such manner that, when micro-particles are to be collected, the magnet is partially or completely outside the ferromagnetic body and, when the particles are to be released or dozed, the magnet is partially or completely inside or behind the ferromagnetic body.Type: GrantFiled: October 20, 2003Date of Patent: November 24, 2009Assignee: BioControl Systems, Inc.Inventors: Kenneth Rundt, Matti Korpela
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Patent number: 7605680Abstract: A highly efficient electromagnetic actuator which can reduce leakage of the magnetic flux is provided. The electromagnetic actuator comprises a first coil 31, a movable body 2 adapted to move on the central axis of the first coil 31, a first stator 11 covering the top face, bottom face and outer peripheral face of the first coil 31, and a permanent magnet 15 adapted to firmly latch the movable body 2 at one end point of its movable range. A second stator 12 adapted to control the magnetic flux generated from the permanent magnet 15 is provided in succession with the first stator 11. By providing the second stator 12, when releasing the movable body 2 from its firmly latched state, the permanent magnet 15 is not inversely excited or demagnetized.Type: GrantFiled: September 7, 2005Date of Patent: October 20, 2009Assignee: Kabushiki Kaisha ToshibaInventors: Yasuhiro Matsumoto, Nobutaka Kubota, Takeshi Noda, Kazuhiro Matsuo, Kenji Kato, Mitsutaka Homma, Takao Wakabayashi
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Publication number: 20090233234Abstract: By a force generation device which can generate a magnetic attraction and gas static pressure between a detection system provided on a lower surface side of an FIA surface plate and a surface plate, a predetermined clearance is formed between the detection system and the surface plate, and in a state where the clearance is formed (a floating state), the detection system is driven by a drive device in at least an uniaxial direction within a horizontal plane. Therefore, because the detection system is in a non-contact state to the base platform, movement (positioning) of the detection system with high precision becomes possible. Further, by setting an attraction larger than a repulsion generated by the force generation device, the detection system can be fixed (landed) in a state positioned with high precision.Type: ApplicationFiled: May 7, 2009Publication date: September 17, 2009Applicant: NIKON CORPORATIONInventor: Yuichi Shibazaki
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Publication number: 20090223198Abstract: A tool for the removal of magnetic debris from worksites. The tool comprises means for the collection and self-removal of magnetic debris from the tool. A magnetic portion resides within a non-magnetic portion and magnetic debris is collected on the exterior of the non-magnetic portion. Removal of the magnetic portion allows collected debris to be removed from the tool. One embodiment of the invention is a rake.Type: ApplicationFiled: March 5, 2008Publication date: September 10, 2009Inventor: Joseph David Nye
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Publication number: 20090184789Abstract: The present invention is a magnetic chuck that is chiefly used for machining tools. The magnetic chuck has a structure in which an accommodation hole (110a) is formed to pass through a chuck main body (110), a first magnetic element (141) is exposed in the direction of the top surface of the chuck main body (110), and an AlNiCo magnet (120) is exposed in the direction of the bottom surface of the chuck main body (110), so that respective objects (200 and 300) to be attached can be attached to two opposite surfaces of the magnetic chuck (100), with the result that the magnetic chuck (100) can be used in various ways. Furthermore, the lateral part (112) of the chuck main body (110) is not unnecessary, so that the weight of the magnetic chuck (100) itself is greatly reduced and thus the product cost is reduced, the thickness of the magnetic chuck (100) is reduced, and convenience of use can be greatly improved.Type: ApplicationFiled: April 24, 2007Publication date: July 23, 2009Inventor: Yong Goo Lee
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Patent number: 7549217Abstract: A method of of fabricating an electromagnet is provided in which a core having a flux return backplate on one end and a cover plate on the other end of the core is provided. For example, the flux return backplate may be fixed to one end of the core and the cover plate may be fixed to the other end of the core. A plurality of layers of wire may then be wound about the core between the flux return backplate and the cover plate, prior to fixing a flux return ring to the cover plate to at least partially enclose the wire.Type: GrantFiled: October 16, 2006Date of Patent: June 23, 2009Assignee: The Boeing CompanyInventors: Arthur C. Day, Bruce David Stanley
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Patent number: 7548147Abstract: A switch type ON/OFF structure for hoisting magnetic disks has a handle turnable towards one side to demagnetize and towards another side to generate a magnetic force to attract and move a work piece. The handle is hinged on one end surface of a hoisting magnetic disk which also has a first detent member and a second detent member. The first and second detent members can stop the turning of the handle. The handle further has an extensible latch member at one side spaced from the handle at a selected interval. The latch member has a distal end slidable over the second detent member and extendable downwards to allow the second detent member to be wedged in the interval and anchored. Thereby the hoisting magnetic disk can provide the magnetic attracting force and hoist and move the work piece safer.Type: GrantFiled: March 26, 2007Date of Patent: June 16, 2009Assignee: Guang Dar Magnet Industrial Ltd.Inventor: Wen-Hsuan Chiang
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Patent number: 7507136Abstract: A set of magnetic blocks by which connection is made between blocks through a force attracting multiple ferrous protrusions on one face to multiple recessed magnets on another face. The multiple points of magnetic connection provide alignment and rigidity to the assembled structure.Type: GrantFiled: December 8, 2006Date of Patent: March 24, 2009Inventor: Claire Jean Patton
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Publication number: 20080290973Abstract: An electro permanent magnetic apparatus with monolithic working face for holding workpieces magnetically or mechanically comprises a base plate and a ferrous monolithic working face. The base plate has a pocket or recess which houses reversible magnets and electrical windings; the working face has magnetic poles which are demarked by slots. On the opposite side of the working face recesses are provided beneath the slots for housing non-reversible permanent magnets.Type: ApplicationFiled: October 24, 2007Publication date: November 27, 2008Inventor: Uttam Sarda
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Publication number: 20080272872Abstract: The invention relates to a universally applicable detachable magnet holder with a fixed magnet and an opposite-lying magnet which can rotate about a point of rotation and which is provided with magnet pole surfaces, wherein each magnet pole surface comprises at least two poles which, when closed, attract each other and which, when open, repel each other once the rotatable magnet has been rotated by means of an actuation device. According to the invention, a distance element (7), made of a non-ferromagnetic material, is fixed to one of the magnet pole surfaces, whereby the bearing surface on the opposite magnet pole surface is a maximum ? of the surface and a centering engaging device (10a, 10b; 11) is arranged in the vicinity of the magnet poles in order to receive magnetic sheer forces.Type: ApplicationFiled: March 30, 2005Publication date: November 6, 2008Inventor: Joachim Fiedler
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Patent number: 7396057Abstract: A lifting magnet having a housing, a rotary magnet unit, and a stationary magnet unit. The lifting magnet also includes a pinion, a socket moving up and down, a slider rotating the pinion to set the magnetization and demagnetization states at top and bottom dead points, respectively, a locking part provided in one of the socket and the slider, a locking unit provided in the other, including a locker, and moving both the socket and the slider up and down while the locker is locked to the locking part, and a locking unit driver alternately driving the locking unit to make the locker released from and locked to the locking part at first and second moving operations, respectively. With this configuration, the lifting magnet can stably keep on and off states of an attractive magnetic force and conveniently performs lifting and carrying operations.Type: GrantFiled: October 22, 2004Date of Patent: July 8, 2008Assignee: Daesung Magnet Co., Ltd.Inventors: Hae-kum Ye, Chang-ki Han, Young-ho Kim
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Patent number: 7102476Abstract: The design of permanent magnet chucks of desired specified attractive force at the base or working face of the chuck is expedited by the discovery of a general correlation between two specific engineering parameters. The attractive force intensity expressed as force per unit chuck working face contact area correlates with the ratio of area of the iron block surfaces at the working face to the area of the permanent magnet surfaces contacting the iron blocks and providing the magnetic flux path to them.Type: GrantFiled: March 17, 2006Date of Patent: September 5, 2006Assignee: General Motors CorporationInventor: Chi-Hung Shen
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Patent number: 6963261Abstract: Magnetic module for the magnetic anchorage to a ferromagnetic surface of another magnetic, or ferromagnetic module, whose head includes: a first multipolar magnetic stator that in turn defines a multipolar magnetic anchoring surface, and a multipolar magnetic rotor or a second multipolar magnetic stator, coaxial to and facing the first multipolar magnetic stator and equipped with means for orienting the poles of the multipolar magnetic rotor or second multipolar magnetic stator, in series or in parallel with respect to the poles of the first multipolar magnetic stator in order to disable or enable the multipolar magnetic anchoring surface of the first magnetic stator.Type: GrantFiled: June 24, 2002Date of Patent: November 8, 2005Inventor: Claudio Vicentelli
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Patent number: 6925975Abstract: A controller for an electromagnetic actuator comprises a pair of springs acting on opposite directions, and an armature connected to the springs. The armature is held in a neutral position given by the springs when the armature is not activated. The actuator also comprises a pair of electromagnets for driving the armature between two end positions. In response to a release of the armature held in one of the end positions, the controller applies brake to the armature according to a load condition of the armature. In high-load conditions, the valve can surely be opened without additional electric power. In low-load conditions, the armature is prevented from colliding with a yoke of the electromagnet. The application of brake includes over-excitation operation, flywheel operation and suspension of power supply. In the over-excitation operation, voltage is applied to the electromagnet corresponding to one of the end positions from which the armature is released for a first period.Type: GrantFiled: February 6, 2002Date of Patent: August 9, 2005Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Hidetaka Ozawa, Kenji Abe, Yoshitomo Kouno, Minoru Nakamura, Toshihiro Yamaki, Yasuo Shimizu
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Patent number: 6854777Abstract: A magnetic lifting machine according to the present invention is to prevent an antioxidant film on the surface of neodymium magnets from exfoliation, by having the neodymium magnets not be in direct contact with a pair of polarity plates of the machine but via anti-exfoliation plates made of non-magnetic material. The anti-exfoliation plates are fitted to both sides of a rotor containing the neodymium magnets therein between the polarity plates, and each of the anti-exfoliation plates may include a plurality of holes for oil storage radially therethrough.Type: GrantFiled: January 30, 2003Date of Patent: February 15, 2005Inventor: Hyung Jung
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Publication number: 20040251995Abstract: The invention introduces a method of locomotion that relies on electronically-controlled arrays of electromagnets that permit a spherical or disk-shaped object to move across a magnetic plane by rolling, and also permit the same object to levitate and remain suspended above a surface without further energy expenditure. Another aspect of the invention is a gaming system that implements the above method of locomotion and additionally employs other supporting technologies.Type: ApplicationFiled: February 3, 2004Publication date: December 16, 2004Inventor: Chidiebere E. Ochi-Okorie