Electromagnet Patents (Class 188/161)
  • Patent number: 11009090
    Abstract: A method for preventing motion of an output shaft (401), of an electromagnetic motor comprising a coil assembly, when a mechanical brake (400) is released, comprising the steps of: determining the position of the output shaft (401); correlating the position of the output shaft (401) with a current such that when applied in the coil assembly induces a force on the output shaft (401) to prevent motion of the output shaft (401) when the mechanical brake (400) is released.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: May 18, 2021
    Assignee: ILLINOIS TOOL WORKS INC.
    Inventors: Andrew Kirby, James A. Cooke
  • Patent number: 10976827
    Abstract: An input device, in particular joystick, with an operating device and a magnetorheological brake device and a controller for activating the brake device. The operating device includes a supporting structure and an operating lever, which is accommodated on the supporting structure for pivoting around at least one pivot axis. The brake device is coupled with the pivot axis for controlled damping of a pivoting motion of the operating lever by way of the controller.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: April 13, 2021
    Assignee: INVENTUS Engineering GmbH
    Inventor: Stefan Battlogg
  • Patent number: 10822200
    Abstract: Elevator systems are described that include a traveling component movable along a guide rail and an overspeed safety system. The safety system includes a safety brake connected to an electromechanical actuator. A safety brake element of the safety brake is operable to engage with the guide rail to stop the traveling component. The electromechanical actuator includes a frame, a first magnetic element operably connected to the safety brake, a second magnetic element movably attached to the frame, and a third magnetic element fixedly attached to the frame. The second magnetic element is movable to urge the first magnetic element from a first position toward a second position. In the second position, the first magnetic element is located proximate the third magnetic element. As the first magnetic element transitions from the first position to the second position, the safety brake element is actuated into engagement with the guide rail.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: November 3, 2020
    Assignee: OTIS ELEVATOR COMPANY
    Inventor: Randall S. Dube
  • Patent number: 10784762
    Abstract: An example apparatus includes a first disk that is rotatable and has a plurality of electro-permanent magnets disposed in a radial array on a surface of the first disk; and a second disk rotatably mounted adjacent to the first disk such that a gap separates the second disk from the first disk, where the second disk has a plurality of ferromagnetic elements disposed in respective radial array on a respective surface of the second disk. Applying an electric pulse to at least one electro-permanent magnet of the plurality of electro-permanent magnets changes a magnetic state of the electro-permanent magnet, thereby (i) generating an external magnetic field that traverses the gap between the first disk and the second disk and interacts with a corresponding ferromagnetic element of the plurality of ferromagnetic elements, and (ii) causing the second disk to rotate as the first disk rotates.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: September 22, 2020
    Assignee: X Development LLC
    Inventors: Michael Grundmann, Jonathan Ross
  • Patent number: 10763721
    Abstract: An electric machine comprises a frame, a cooling fan disposed in a fan housing and an integrated airflow inducer in a shape of a partial cone. The partial cone defines a skirt disposed as a differential sized ring with a larger entrance and a smaller exit around the frame of the electric machine at a boundary between the frame and the fan housing including a rotating fan to cool the electric machine. The integrated airflow inducer includes an inducer inlet and an inducer outlet. The integrated airflow inducer is configured to increase an airflow across the frame of the electric machine as the rotating fan develops a higher pressure at the inducer outlet than the inducer inlet of the integrated airflow inducer so that the integrated airflow inducer takes advantage of the high pressure to draw in air from a low pressure at the inducer inlet so that the electric machine operates at a lower temperature than without the integrated airflow inducer.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: September 1, 2020
    Assignee: Siemens Industry, Inc.
    Inventors: Tyler Gaerke, Daniel Lasorso
  • Patent number: 10751573
    Abstract: A weight loading system for fitness equipments includes a fitness equipment support, a rally rope, a motor, a motor driving and a motor control unit. The motor is a permanent magnet brushless DC motor with an external rotor structure, and the motor includes a stator mounted onto the fitness equipment support and an external rotor sheathed on the stator and rotatable with respect to the stator, and the rally rope is wound around the external rotor of the motor, and an end of the rally rope is coupled to the external rotor of the motor, and the other end of the rally rope is coupled to the power driving mechanism of the fitness equipment; the power driving mechanism is provided for driving the external rotor of the motor through the rally rope to rotate and generate a rally, and the motor control unit controls the motor to rotate in an opposite direction through the motor driving module, so as to produce a load force opposite to the rally.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: August 25, 2020
    Assignee: NINGBO JADA HEALTH TECH CO., LTD.
    Inventor: Weidong Lu
  • Patent number: 10671171
    Abstract: A magnetorheological transmission device and a method for influencing the coupling intensity of two components, which can be coupled and whose coupling intensity can be influenced. To influence the coupling intensity, a channel is provided, which contains a magnetorheological medium with magnetically polarizable particles. A magnetic field generating unit generates a magnetic field in the channel in order to influence the magnetorheological medium in the channel. An outer component encloses an inner component. At least one of the two components is mounted via a separate bearing. A distance between the outer and inner components is at least 10 times as great as a typical mean diameter of the magnetically polarizable particles in the magnetorheological medium. The magnetic field of the magnetic field generating unit can be applied to the channel in order to selectively chain together the particles and/or release them.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: June 2, 2020
    Assignee: INVENTUS Engineering GmbH
    Inventor: Stefan Battlogg
  • Patent number: 10642467
    Abstract: In certain embodiments, an electronic input device includes a knob assembly defining an annular cavity and including a magnetically attractable armature. The electronic input device also includes a ratchet assembly disposed within the annular cavity and includes a ring magnet. The electronic input device includes a clutch mechanism that has a friction disc assembly, and an electromagnet configured to generate a magnetic field that shifts the friction disc assembly between a first position in which the friction disc assembly prevents rotation of the ratchet assembly and a second position in which the ratchet assembly is free to rotate with the knob assembly. The ring magnet of the ratchet assembly interacts with the magnetically attractable armature to generate a ratcheting feedback in response to rotation of the knob assembly when the friction disc assembly is in the first position.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: May 5, 2020
    Assignee: Logitech Europe S.A.
    Inventors: Baptiste Merminod, Davin O'Mahony, Antoine Merminod
  • Patent number: 10577000
    Abstract: An apparatus a housing structure and a magnetic assembly. The magnetic assembly is configured to slide within the housing structure in a first direction associated with a direction of travel of the housing structure and in a second direction that is opposite of the first direction. The magnetic assembly includes a first pole plate having a first polarity and a second pole plate having a second polarity that is opposite of the first polarity.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: March 3, 2020
    Assignee: THE BOEING COMPANY
    Inventors: Deborah A. Beron-Rawdon, Robert J. Atmur, Douglas C. Cameron, Jr., William P. Sargent
  • Patent number: 10233986
    Abstract: A motor vehicle brake, in particular a combined hydraulically and electromechanically actuatable motor vehicle brake, with an actuator assembly comprising: a housing, an actuator which can be moved relative to the housing for hydraulically or electromechanically moving a brake lining, a motor drive, a movement mechanism which is arranged between the motor drive and the movable actuator, a gear arrangement which is paired with the movement mechanism, and a separate self-locking device which is designed to block the movement mechanism when necessary, wherein the movement mechanism has a ball screw drive with a rotatable spindle and a nut which can be moved in the housing in a linear manner. The nut can be moved within the housing in order to move the actuator by rotating the spindle, and the gear arrangement has at least two gear stages.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: March 19, 2019
    Assignee: Lucas Automotive GmbH
    Inventors: Gregor Poertzgen, Steve Scherer, Christian Dilla, Erwin Michels, Benedikt Ohlig
  • Patent number: 10215203
    Abstract: An electromagnetically operated powertrain system is provided. The system includes a plurality of cylinder assemblies arranged in parallel at least partially along a vehicle. Each of the cylinder assemblies may include one or more cylinders, one or more electromagnetic devices secured to at least one of the ends of each cylinder, one or more pistons reciprocatingly received in the cylinders, and a piston rod coupled to the pistons. Each of the pistons includes a permanent magnet that creates a magnetic field interacting with an electromagnetic field generated by each of the electromagnetic devices. A pulling and/or pushing force may be selectively generated by the magnetic field and the electromagnetic field to enable the pistons to reciprocate within the cylinders. A crankshaft is coupled to the piston rods of the plurality of cylinder assemblies and directly coupled to at least one of front and rear axles of a vehicle.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: February 26, 2019
    Assignee: Nemesys Engineering, LLC
    Inventor: Andrew Michael Nelson
  • Patent number: 10166413
    Abstract: Embodiments include a system for controlled release of a descent line that can include a shaft secured to a first end of a descent line. Embodiments can include a magnet cradle housing fixedly coupled with the shaft, a first magnet retained by the magnet cradle housing, a coil assembly secured in magnetic proximity to the magnet assembly to generate an electric current by magnetic interaction with the magnet when the shaft is rotated. Embodiments can include a braking assembly powered by the magnet and coil assembly such that the decent of a user is slowed to a safe rate of speed.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: January 1, 2019
    Assignee: BAILOUT SYSTEMS, LLC
    Inventors: Michael A. Ragsdale, Troy S. Owens, Patrick Thomas Henke
  • Patent number: 10150000
    Abstract: A locking device for an exercise system may include a locking member having a contact portion and configured to move between a first position and a second position. When in the first position, the contact portion of the locking member is not in contact with the resistance mechanism of the exercise system, thereby allowing movement of the at least one moveable assembly. When in the second position, the contact portion of the locking member is in contact with the resistance mechanism of the exercise system, thereby preventing movement of the at least one moveable assembly. The device may also include an electrical actuating device having an actuator for selectively engaging the locking device and moving the locking device between a first position and a second position.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: December 11, 2018
    Assignee: NUSTEP, INC.
    Inventors: Matthew P. Weber, Neil M. Cole, Daniel C. Shnidman, Robert A. Law, Douglas R. Hennigar, Walter N. Cole
  • Patent number: 10138961
    Abstract: A disk brake, in particular for a vehicle, comprising a brake lining arrangement with a friction lining and a pad back plate. The friction lining can interact with a brake disk in order to achieve a braking effect. The disc brake also comprises a vibration damping device which is arranged on a brake caliper or on a brake support, comprising at least one additional mass which is designed as a separate component. The vibration damping device further comprises a receiving pin which is secured to the brake caliper or to the brake support and via which the additional mass can be fixed to the brake caliper or to the brake support.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: November 27, 2018
    Assignee: Lucas Automotive gmbH
    Inventors: Markus Mallmann, Marco Becker
  • Patent number: 10132365
    Abstract: A reaction plate for a clutch including an annular body, the annular body including an inner circumferential edge, an outer circumferential edge, a first surface between the inner and outer circumferential edges and facing a first axial direction and a second surface between the inner and outer circumferential surfaces and facing a second axial direction, the second surface including recesses covering at least 50 percent of the second surface. A clutch assembly including a friction plate, the friction plate having a first axially-facing surface including a friction material, a reaction plate, the reaction plate having a second axially-facing surface including recesses covering at least 50 percent of the second axially-facing surface and an actuation means arranged to displace the friction plate or the reaction plate such that the first and second axially-facing surfaces frictionally engage. A method of fabricating a reaction plate for a clutch.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: November 20, 2018
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Rashid Farahati, Olusanmi Adeniran
  • Patent number: 10047802
    Abstract: Clutch for a motor vehicle, preferably for engaging and disengaging a drivetrain for all-wheel drive vehicles, comprising a first shaft, a second shaft coaxially arranged with the first shaft, a clutch sleeve, which is displaceable in an axial direction relative to the first shaft and the second shaft and which brings about a positive coupling or decoupling of the first shaft and the second shaft, together with a coil to which current can be applied, wherein the clutch sleeve is arranged, torsionally fixed to the first shaft, and wherein the coil to which current can be applied is arranged coaxially with the axial direction, wherein the clutch sleeve to which current can be applied can be displaced in an axial direction through the application of current to the coil.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: August 14, 2018
    Assignee: MAGNA POWERTRAIN GMBH & CO KG
    Inventors: Johannes Quehenberger, Johann Willberger
  • Patent number: 10040348
    Abstract: A motorized golfboard with bi-axle four wheel steering controlled by the horizontal force applied to a stability bar extending vertically from golfboard's frame. Steering this way is accomplished using three design features. First, a vertically angled pivot point behind the front wheel assembly and one in front of the rear wheel assembly. Second, structurally, the front and rear axles axles lie beyond the front and rear of the golfboard deck and frame. Third, the pivot points are centered on spring plates extending angularly upward from the horizontal, bottom face of the frame of the golfboard, so as to be disposed at an acute angle with respect to the deck of the golfboard. In combination, these three features work to allow the inboard wheels to move closer together and the outboard wheels to move further apart when the stability bar is forced to the side.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: August 7, 2018
    Inventors: Michael Jay Radenbaugh, Robert Anthony Wilk, Starling T Faraon, Dean F Fuschetti, Joseph Israel Wolf
  • Patent number: 9982725
    Abstract: An inner peripheral surface of an outer cylindrical tubular portion and an outer peripheral surface of an inner cylindrical tubular portion of a rotor are respectively shaped into a stepped form. A radial distance between the outer cylindrical tubular portion and the inner cylindrical tubular portion at a counter-armature side location is larger than that of an armature side location in the rotor. An outer peripheral surface of an outer cylindrical tubular portion and an inner peripheral surface of an inner cylindrical tubular portion of a stator are respectively shaped into a stepped form. A radial distance between the outer peripheral surface of the outer cylindrical tubular portion and the inner peripheral surface of the inner cylindrical tubular portion at the counter-armature side location is larger than that of the armature side location in the stator.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: May 29, 2018
    Assignee: DENSO CORPORATION
    Inventor: Yoshinori Fukumura
  • Patent number: 9945431
    Abstract: An inner peripheral surface of an outer cylindrical tubular portion and an outer peripheral surface of an inner cylindrical tubular portion of a rotor are respectively shaped into a stepped form. A radial distance between the outer cylindrical tubular portion and the inner cylindrical tubular portion at a counter-armature side location is larger than that of an armature side location in the rotor. An outer peripheral surface of an outer cylindrical tubular portion and an inner peripheral surface of an inner cylindrical tubular portion of a stator are respectively shaped into a stepped form. A radial distance between the outer peripheral surface of the outer cylindrical tubular portion and the inner peripheral surface of the inner cylindrical tubular portion at the counter-armature side location is larger than that of the armature side location in the stator.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: April 17, 2018
    Assignee: DENSO CORPORATION
    Inventor: Yoshinori Fukumura
  • Patent number: 9933032
    Abstract: This eddy-current retarding device includes: a magnet holding member that is coaxially provided to a rotating shaft and holds plural permanent magnets in a circumferential direction; a brake member that includes paired disk portions disposed on both sides of the magnet holding member in the axial direction of the rotating shaft, a connecting portion that connects the paired disk portions, and an eddy-current generating portion that causes eddy current due to rotation of the permanent magnets, and this brake member being supported in a relatively rotatable manner with respect to the rotating shaft; and a friction brake that causes a friction member to press against the brake member at the time of braking to bring the brake member to a stop.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: April 3, 2018
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Hiroyuki Yamaguchi, Kenji Imanishi, Yasutaka Noguchi, Takashi Futaba
  • Patent number: 9868613
    Abstract: In a braking apparatus, a forcing device forces a movable portion in a direction that places a friction member in contact with a rotating body. A braking force releasing device displaces the movable portion in a direction in which the friction member separates from the rotating body in opposition to the forcing device. A buffering member is disposed between a fixed portion and the movable portion, and is made of a flexible material. A deforming device deforms the buffering member by pressing the buffering member in a direction that is perpendicular to the direction of displacement of the movable portion.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: January 16, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Shimpei Momoki
  • Patent number: 9847741
    Abstract: A circuit arrangement is configured to supply an electromagnetic holding brake of an electric motor with an operating voltage for releasing the holding brake, and a voltage that is reduced relative to the operating voltage for holding the holding brake in the released position. The operating voltage is supplied from a higher-level control system disposed separately from the motor and the holding brake. The circuit arrangement is disposed in or on the motor or in or on the holding brake and includes a voltage regulator adapted to regulate, independently of the operating voltage, the reduced voltage to a fixed value after the holding brake is released.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: December 19, 2017
    Assignee: DR. JOHANNES HEIDENHAIN GMBH
    Inventors: Markus Schoenlinner, Christian von Le Suire
  • Patent number: 9757612
    Abstract: A locking device for an exercise system may include at least one moveable assembly that is in communication with a resistance mechanism. The locking device has an actuating device for selectively engaging the locking device, a locking member having a contact portion, wherein the contact portion of the locking member is not in contact with the resistance mechanism of the exercise system when the actuating device is in a first position, thereby allowing movement of the at least one moveable assembly, and wherein the contact portion of the locking member is in contact with the resistance mechanism of the exercise system when the actuating device is in a second position, thereby preventing movement of the at least one moveable assembly.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: September 12, 2017
    Assignee: NUSTEP, INC.
    Inventors: Matthew P. Weber, Neil M. Cole, Daniel C. Shnidman, Robert A. Law, Douglas R. Hennigar, Walter N. Cole
  • Patent number: 9601918
    Abstract: An electromagnetic braking system includes an electrically conductive disc coupled to a rotatable shaft of a power generation system for operating in an island mode. The rotatable shaft is operatively coupled between a prime mover and a generator for supplying power to an island grid. The electromagnetic braking system further includes a controller for receiving at least one status or synchronization signal and for generating a control signal based on the at least one signal and an inducting unit for applying an electromagnetic braking force on the electrically conductive disc when commanded by the control signal to regulate a rotational speed of the rotatable shaft.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: March 21, 2017
    Assignee: General Electric Company
    Inventors: Ara Panosyan, Stefan Schroeder, Christoph Boeld, Herbert Schaumberger, Johann Hirzinger-Unterrainer, Xiaoting Dong, Uwe Liebscher
  • Patent number: 9598064
    Abstract: A brake drive control circuit of a servo motor which detects malfunction of a semiconductor circuit at the brake drive control circuit, that is, a brake drive control circuit which connects two semiconductor circuits in series to a brake and uses a voltage detection circuit which detects the presence of voltage which is applied to the brake by brake signals turning the semiconductor circuits on/off so as to detect test pulses in the voltage which is applied to the brake due to test pulses which are included in the brake signals and turn the semiconductor circuits off for instants during an operation for disengaging the brake and detect malfunctions of the semiconductor circuits by the detection of the test pulses.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: March 21, 2017
    Assignee: FANUC CORPORATION
    Inventors: Yoshikiyo Tanabe, Yoshiki Hashimoto
  • Patent number: 9550205
    Abstract: An electromagnetic device (1) for stabilizing and minimizing the deformation of a strip (4) made of ferromagnetic material during its feeding in a system for coating the same strip with molten metal, by applying a distribution of force which is continuous in the direction transversal to the strip regardless of the width thereof. The device comprises first electromagnets and second electromagnets mirroring the first electromagnets with respect to said theoretical pass-line (50) of said strip (4). Each electromagnet includes a core comprising one pole and one feeding coil wound about the pole. The electromagnetic device comprises a connection element (26) made of ferromagnetic material which connects the cores of the first electromagnets (15, 15?, 15?, 15??) and a connection element (26?) made of ferromagnetic material which connects the cores of the second electromagnets (16, 16?, 16?, 16??). The connection elements (26, 26?) mirror the theoretical pass-line (50) of the strip (4).
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: January 24, 2017
    Assignee: Danieli & C. Officine Meccaniche S.P.A.
    Inventors: Fabio Guastini, Michele Minen
  • Patent number: 9359069
    Abstract: An electro-mechanical actuator including an aircraft parking brake may include a motor shaft, a park brake disk, and a voice coil assembly. The voice coil assembly may include a bobbin configured to translate between an engaged position and a disengaged position. An engagement feature may be coupled to the bobbin. The engagement feature may contact the park brake disk in the engaged position. The engagement feature may be magnetically coupled to a voice coil magnet and washer in the disengaged position.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: June 7, 2016
    Assignee: GOODRICH CORPORATION
    Inventors: David Drennen, Kevin Rehfus, Robert French, Albert Keith Pant, Joseph E. Beason, Harald Klode
  • Patent number: 9145936
    Abstract: The invention relates to a method and an arrangement for adjusting a brake. The arrangement comprises: a frame part of the brake; a counterpart to be pressed against the frame part; an elastic damping member for damping the noise of the brake, which damping member is configured to form a damping force resisting contact between the countersurfaces of the frame part and of the counterpart, said damping force increasing when the distance between the countersurfaces decreases; and also an adjustment means, for adjusting the damping force formed by the damping member and resisting contact between the countersurfaces of the frame part and of the counterpart.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: September 29, 2015
    Assignee: Kone Corporation
    Inventors: Mika Olkkonen, Antti Saarelainen
  • Patent number: 9114791
    Abstract: An electric brake for an aircraft wheel comprising a support 4 formed by a torsion tube 5 and by an actuator-carrier 6, a stack 7 of disks mounted around the torsion tube 5, electromechanical actuators 8 carried by the actuator-carrier 6, each actuator comprising an electric motor 12 and a pusher 14, the electric motor 12 being adapted to move the pusher 14 facing the stack 7 of disks in order to apply a braking force selectively to the stack 7 of disks; and temperature measurement means for measuring a temperature representative of a temperature that exists in the stack 7 of disks. The temperature measurement means comprises at least one temperature sensor 18 arranged in the pusher 14 of one of the electromechanical actuators 8 so as to be located in the immediate proximity of the stack 7 of disks when the pusher 14 is brought into contact therewith.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: August 25, 2015
    Assignee: MESSIER-BUGATTI-DOWTY
    Inventors: Franck Selles, Jean-Baptiste Vaney, Emmanuel Colin
  • Publication number: 20150136541
    Abstract: A variable braking system may include an outer wheel, a wheel hub, a magnet, a coil, a brake pedal sensor, an electrorheological (ER) fluid, and an electricity supplying unit. The wheel hub may have a wheel flange, be rotatably coupled with the outer wheel and form a braking chamber together with the outer wheel. The magnet may be coupled to the wheel hub in the braking chamber. The coil in the braking chamber may be coupled to the outer wheel to generate current by the magnet when the wheel hub rotates. The brake pedal sensor may output a first signal by detecting an actuation angle of a brake pedal. The ER fluid may be filled in the braking chamber and interfere the rotation of the wheel hub according to selective supply of electricity to the ER fluid. The electricity supplying unit may selectively supply electricity to the ER fluid according to the first signal of the brake pedal sensor.
    Type: Application
    Filed: September 25, 2014
    Publication date: May 21, 2015
    Applicant: Hyundai Motor Company
    Inventor: SungJun HAN
  • Publication number: 20150053514
    Abstract: A compact control device for failsafely controlling an electrical actuator capable of moving a movable machine part into a defined end position, has an input connection for receiving an external control signal representing a desired position of the machine part. The compact control device further has an input part for detecting a position signal, which signals an actual position of the machine part at the defined end position. A power section comprises a power switching element for switching on and failsafely switching off a control current for the actuator that is supplied to the electrical actuator via a first output connection. The compact control device has a second output connection for providing an external status signal and an evaluation unit which actuates the power switching element depending on the external control signal and generates the external status signal at the second output connection depending on the position signal.
    Type: Application
    Filed: November 3, 2014
    Publication date: February 26, 2015
    Inventors: Karl UNSIN, Martin HECHT, Alexander WIEGERT, Andreas HAHN, Berthold ROESSLER, Michael HAERTER
  • Patent number: 8939200
    Abstract: Selected designs for reciprocating pumps and down-hole well-stimulation equipment reflect disparate applications of identical technical principles (relating to, e.g., the vibration spectrum of an impulse). In certain of these designs, the vibration spectrum is controlled, suppressed and/or damped using tunable components to limit destructive excitation of resonances; in others the vibration spectrum is tuned at its source for maximum resonance excitation. For example, tunable fluid ends control valve-generated vibration to increase fluid-end reliability. By down-shifting the frequency domain of each valve-closing impulse shock, initial excitation of fluid end resonances is minimized. Subsequent damping and/or selective attenuation of vibration likely to excite one or more predetermined (and frequently localized) fluid end resonances represents further optimal use of fluid end vibration-control resources.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: January 27, 2015
    Inventors: Dennis W. Gilstad, Barbara C. Gilstad
  • Patent number: 8882091
    Abstract: A vibration isolator includes a housing having an upper fluid chamber, a lower fluid chamber, a piston, a tuning passage, and a linear inductance motor assembly for changing the isolation frequency of the vibration isolator. The piston is resiliently disposed within the housing. A vibration tuning fluid is located in the upper fluid chamber, the lower fluid chamber, and the tuning passage. The linear inductance motor assembly includes a magnet member and an inductance coil at least partially surrounding the magnet member. A control system is configured to selectively actuate the magnet member; wherein selective actuation of the magnet member selectively imparts a pumping force on the tuning fluid, thereby changing the isolation frequency.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: November 11, 2014
    Assignee: Textron Innovations Inc.
    Inventors: Taeoh Lee, Michael R. Smith, Frank B. Stamps, David E. Heverly, Jr.
  • Patent number: 8869952
    Abstract: A yoke core of an electromagnetic brake system includes a rotation shaft hole portion through which a rotation shaft is penetrated, and additionally includes an inner yoke portion and an outer yoke portion which are arranged on both inner and outer sides, by pinching a concave groove. A coil is accommodated in the concave groove and a magnetic flux is generated by applying electricity to attract an armature. The armature has a penetrating hole portion in the center, and a protruded shaft portion formed on the inner yoke portion is inserted to the penetrating hole portion. The rotation shaft has one side thereof rotatably supported by a support portion of a housing, and the other side thereof rotatably supported by the protruded shaft portion via the armature and a planetary gear mechanism. Accordingly, it is not necessary to provide bearings or the like.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: October 28, 2014
    Assignee: Alps Electric Co., Ltd.
    Inventor: Tadashi Sano
  • Publication number: 20140251738
    Abstract: A magnetic brake unit includes an operation unit, a rotating plate placed below the operation unit and coaxially rotating with the operation unit in conjunction with an operation of the operation unit, and an electromagnetic brake that is placed to be in contact with the rotating plate and can magnetically adsorb the rotating plate, in which the rotating plate includes an adsorbed surface in contact with the electromagnetic brake, the electromagnetic brake includes an adsorbing surface in contact with the rotating plate, the electromagnetic brake applies a braking force against a pivoting to the rotating plate when the electromagnetic brake magnetically adsorbs the rotating plate, the rotating plate is pivotable in a state of being in contact with the electromagnetic brake when the electromagnetic brake does not magnetically adsorb the rotating plate, and a polymer material section is formed at least one of the adsorbed surface and the adsorbing surface.
    Type: Application
    Filed: January 24, 2014
    Publication date: September 11, 2014
    Applicant: Alps Electric Co., Ltd.
    Inventor: Tadashi Sano
  • Patent number: 8820489
    Abstract: An electric motor for driving a vehicle wheel includes a parking brake that is selectively applied to provide a park brake condition. The parking brake is a clutch style brake and includes a sliding brake disk that is mounted for rotation with a motor shaft. A brake piston is used to move the sliding brake disk into engagement with a motor housing to achieve a park applied position. The parking brake is held in a release position by a hydraulic system that exerts a fluid pressure force against the brake piston. A resilient mechanism cooperates with the brake piston to apply the parking brake once the fluid pressure force is diminished.
    Type: Grant
    Filed: March 7, 2007
    Date of Patent: September 2, 2014
    Assignee: Arvinmeritor Technology, LLC
    Inventors: Adam Ritchie, Mark C. Smith, Lon Cooper
  • Patent number: 8807294
    Abstract: A brake release device attached to a door machine comprises a ring plate provided with a plurality of openings and fixed on a pull chain disc, a base plate located at the outside of the door machine, a passive plate provided with a plurality of plug pins that correspond to the openings of the ring plate and slides together with the sliding pin, a guiding member fixed together with the base plate, a sliding pin corresponding to a brake release bar for releasing brake of the door machine and slidably guided by the guiding member, a spring element and a fusible link device that curbs the sliding pin from leaving the brake release bar. By the spring element, the guiding member stores potential energy for sliding.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: August 19, 2014
    Inventor: Chung-Hsien Hsieh
  • Publication number: 20140206264
    Abstract: A machine tool brake device of a portable machine tool includes at least one magnetic-field-type brake unit that is configured to brake a spindle and/or a machining tool when the magnetic-field-type brake unit is in at least one braking position. The machine tool brake device further includes at least one spindle immobilization unit that is configured to immobilize the spindle when the spindle immobilization unit is in at least one immobilization position. The machine tool brake device also includes at least one activation unit that is configured to transfer the magnetic-field-type brake unit into the braking position and to enable an automatic transfer of the spindle immobilization unit into the immobilization position.
    Type: Application
    Filed: January 20, 2014
    Publication date: July 24, 2014
    Applicant: Robert Bosch GmbH
    Inventors: Joerg Maute, Florian Esenwein
  • Publication number: 20140196994
    Abstract: The invention relates to an actuator system, in particular an electromechanical parking brake system, comprising an actuator, wherein the actuator is driven by a direct current motor that can be driven in both directions of rotation, wherein a control unit for controlling the movement of the direct current motor in an open-loop or closed-loop manner is provided. The core of the invention is that one or more pieces of information are supplied to a control unit, said information allowing the application force exerted by the electromotive actuator to be determined and compared to a predetermined minimum application force, and wherein the control unit emits at least one piece of information, signal or the like for requesting an auxiliary actuation to peripheral systems, components and/or electronic control units after the target to actual value comparison has shown that the determined, set application force is smaller than the predetermined minimum application force.
    Type: Application
    Filed: June 19, 2012
    Publication date: July 17, 2014
    Applicant: Continental Teves AG & Co., OHG
    Inventors: Heinz-Anton Schneider, Christof Maron
  • Publication number: 20140182981
    Abstract: A blocking device, and a gear-drive unit containing such a blocking device, and a method for producing such a gear-drive unit for blocking a rotary motion of a shaft relative to a housing of the gear-drive unit, having a first, rotatable blocking element and a second blocking element which is displaceable relative to the first blocking element by means of at least one electromagnet and at least one restoring element, in which the blocking elements in the blocked state mesh in the axial direction with one another by form-locking, and the blocking device is embodied as a separate, independent structural unit, which can be mounted as a unit on the one hand onto the housing and on the other onto the shaft.
    Type: Application
    Filed: March 10, 2014
    Publication date: July 3, 2014
    Applicant: ROBERT BOSCH GMBH
    Inventors: Recep Tarhan, CHRISTIAN MEYER, ULRICH RETTMAR, GERD WALTER, STEFAN DEMONT
  • Patent number: 8746421
    Abstract: A blocking device, and a gear-drive unit containing such a blocking device, and a method for producing such a gear-drive unit for blocking a rotary motion of a shaft (14) relative to a housing (16) of the gear-drive unit (10), having a first, rotatable blocking element (32) and a second blocking element (34) which is displaceable relative to the first blocking element (32) by means of at least one electromagnet (44) and at least one restoring element (42), in which the blocking elements (32, 34) in the blocked state mesh in the axial direction with one another by form-locking, and the blocking device (30) is embodied as a separate, independent structural unit (31), which can be mounted as a unit (31) on the one hand onto the housing (16) and on the other onto the shaft (14).
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: June 10, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Recep Tarhan, Christian Meyer, Ulrich Rettmar, Gerd Walter, Stefan Demont
  • Patent number: 8714329
    Abstract: An electromagnetic clutch includes a rotating member; an electromagnetic coil that is arranged on a rotational axis of the rotating member and generates electro-magnetic force; an output mechanism that has an armature to which return force in a direction away from the electromagnetic coil is applied by a return spring; a cam mechanism that is juxtaposed along the rotational axis to the output mechanism, and has a control cam that is unable to rotate relative to the rotating member, and a cam follower that is able to roll between the control cam and the armature; and a relative rotation restricting device that is arranged on an axis of the cam mechanism, and that is configured to restrict relative rotation between the armature and the control cam when the electromagnetic coil is in a de-energized state.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: May 6, 2014
    Assignee: JTEKT Corporation
    Inventors: Yoichi Sakamoto, Kenji Korenaga, Minoru Onitake, Hiroshi Takuno, Takashi Hosokawa, Hirotatsu Kitabatake, Hideaki Komada, Hiroaki Ebuchi, Hiroto Hashimoto
  • Patent number: 8701843
    Abstract: A flywheel assembly for exercise devices includes a flywheel. A first disc and a second disc sequentially received in the flywheel and securely attached to each other. A control plate is rotatably sandwiched between the first disc and the second disc. Multiple magnetic devices are respectively and radially connected to the control plate. A shaft centrally extends through the first disc, the second disc and the flywheel, and laterally mounted onto the second disc, wherein the flywheel is rotatable relative to the first disc, the control plate with the magnetic devices and the second disc. A drive device is laterally mounted onto the second disc for driving the control plate and adjusting the damping to the flywheel when the control plate is rotated relative to the first disc and the second disc due to the operation from the drive device.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: April 22, 2014
    Inventor: Kuang-Shiung Kao
  • Publication number: 20140084761
    Abstract: A multi-joint fixture including a proximal base unit, one or more arms serially connected by electromagnetically lockable ball joints, and a distal hub. The ball joints unlock when not powered. A centering mechanism biases the ball joints toward a neutral position. A control system activates the electromagnetic brake with a high-then-low voltage profile. A headpiece attaches to the hub and holds a drape that covers the fixture. A connector connects a surgical device to the headpiece. A switch on the hub can be actuated via actuators on the headpiece or connector.
    Type: Application
    Filed: December 2, 2013
    Publication date: March 27, 2014
    Applicant: SURGICAL CONCEPT DESIGNS LLC
    Inventors: Christopher P. Scott, Edward J. Laganis, Anthony J. LaRosa, Jason R. Cahayla
  • Patent number: 8651246
    Abstract: An electromagnetic brake contains a coil seat including plural receiving holes disposed on a front end thereof to receive plural compression springs respectively and an electromagnetic coil mounted on the front end thereof; a movable friction piece fitted on the front end thereof; a brake member fixed in a front end of the friction piece and including a transmitting shaft fitted thereon; a fixed member secured on a front end of the brake member, wherein the electromagnetic coil includes a first silicon steel ring, a plurality of slots and a number of elongate grooves, and each slot includes an isolation holder fitted therein, and the isolation holder includes a recess formed on one side thereof to correspond to the groove of the first silicon steel ring, and between two abutting isolation holders is provided with a coil set formed by an enameled copper wire.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: February 18, 2014
    Inventor: Xiu-Feng Chen
  • Patent number: 8646550
    Abstract: Vehicle wheels may be equipped with a stator and rotor to induce current to generate electricity as the vehicle wheels rotate or to slow down the vehicle wheels in response to the application of a brake of the vehicle. Air may be sucked through the vehicle wheels through mesh screens to create air flow that passes through ductwork to reach a turbine generator, which generates electricity in response to blade rotation from air flow. A roof mounted solar energy conversion system may generate electricity. A vehicle power supply boosts its energy from all the electricity generated.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: February 11, 2014
    Inventor: Krassimire Mihaylov Penev
  • Patent number: 8631917
    Abstract: An elevator brake assembly includes a braking fluid for providing a braking force. A first magnet provides a first magnetic field that influences the braking fluid to provide the braking force. The second magnet selectively provides a second magnetic field that controls how the first magnetic field influences the braking fluid to control the braking force.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: January 21, 2014
    Assignee: Otis Elavator Company
    Inventors: Zbigniew Piech, Wojciech Szelag
  • Publication number: 20140008159
    Abstract: An electromagnetic brake and a method for manufacturing an electromagnetic brake are disclosed. The electromagnetic brake includes a coil former, a coil, which is fitted on the coil former, and also an electrically connecting part, which is equipped to make an electrically conductive contact between the coil and the power supply cable supplying current to the electromagnetic brake.
    Type: Application
    Filed: September 11, 2013
    Publication date: January 9, 2014
    Applicant: KONE Corporation
    Inventors: Antti SAARELAINEN, Asmo TENHUNEN
  • Publication number: 20130313052
    Abstract: An elevator system including a braking system, and a method of retrofitting an elevator for such braking system is disclosed. The braking system may comprise a first brake having a first magnetic brake coil, the first brake movable between a disengaged and an engaged position, a second brake having a second magnetic brake coil, the second brake movable between a disengaged and an engaged position, and a brake control device having a brake power source. The brake control device may be electrically connected to the first and second brakes and may be configured to selectively delay or sequence the movement of the first brake and the second brake to the engaged position with residual current from the brake coils.
    Type: Application
    Filed: February 4, 2011
    Publication date: November 28, 2013
    Applicant: Otis Elevator Company
    Inventor: Joseph L. Della Porta
  • Patent number: 8550219
    Abstract: Disclosed is an electromagnetically released spring pressure brake that is to be mounted on a machine wall or similar. Said brake comprises a uniform rectangular coil support (1) with two preferably oval, adjacent coils (7, 7.1), to which two separately movable rectangular armature disks are assigned. Said armature disks apply pressure to a joint rotor encompassing two friction linings that are mounted on each side when the coils (7, 7.1) are de-energized. The rotor is axially movable on an axially toothed hub. Two respective fastening screws (9) are used for guiding each of the armature disks parallel along the central longitudinal axis (13, 13.1) thereof, on the radially largest possible diameter of the rotor. A manual lever (10) featuring manual releasing bolts is provided for each armature disk.
    Type: Grant
    Filed: April 2, 2007
    Date of Patent: October 8, 2013
    Assignee: Chr. Mayr GmbH & Co. KG
    Inventors: Johann Eberle, Gunther Klingler, Harald Weiss