Brake And Clutch Patents (Class 310/76)
  • Patent number: 9929632
    Abstract: A low-carbon economical electromagnetic fan clutch includes a spindle and a fan fixing disc, wherein the low-carbon economical electromagnetic fan clutch further includes an eddy current disc. The fan fixing disc and the eddy current disc are sequentially arranged at a left end of the spindle along an axial direction from left to right; one or multiple groups of permanent magnets are arranged on the fan fixing disc around the spindle, and a conductive non-magnetic-conductive material is fixed at a corresponding position of the eddy current disc; the fan fixing disc is rotationally connected with the spindle through a first bearing, and the eddy current disc is rotationally connected with the spindle through a second bearing. In the low-carbon economical electromagnetic fan clutch, an electromagnetic eddy current high heat accumulation area is effectively separated from the fan fixing disc rotating at a high speed.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: March 27, 2018
    Assignee: LONGKOU ZHONGYU THERMAL MANAGEMENT SYSTEM TECHNOLOGY CO. LTD
    Inventors: Zhaoyu Wang, Ziyi Xing
  • Patent number: 9893592
    Abstract: A rotating electric machine includes: a rotation shaft; a bearing retaining the rotation shaft; an electromagnetic brake that is provided on an outer peripheral side of the rotation shaft and is located between the bearing and a rotor, the electromagnetic brake locking the rotation shaft during non-excitation and releasing the locking during excitation; a magnetic-flux shielding unit provided on an outer peripheral side of the electromagnetic brake; and a slidable contact unit that is provided so as to be in contact with the magnetic-flux shielding unit and the rotation shaft and comes into contact with the magnetic-flux shielding unit and the rotation shaft at least at two locations on the bearing side and the rotor side, wherein a magnetic field generated from the electromagnetic brake forms a closed circuit through the rotation shaft, the magnetic-flux shielding unit, and the slidable contact unit.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: February 13, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventor: Yoshiyuki Hisamatsu
  • Patent number: 9618102
    Abstract: An actuator is driven even if a jammed state, a motor stop, or the like occurs. An electromechanical actuator includes: an electric motor attached to a housing; a conversion mechanism portion having a drive portion that is driven to rotate by the electric motor and a driven portion that is driven by the drive portion and advances and withdraws in a predetermined advancing and withdrawing direction, the conversion mechanism portion being accommodated in the housing; a sliding support mechanism that transmits rotational force of the electric motor to the drive portion and allows the drive portion to slide in the advancing and withdrawing direction with respect to the electric motor; and a piston portion controlled so as to be at a predetermined position in the advancing and withdrawing direction with respect to the housing by means of pressure of a fluid supplied to and discharged from the housing.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: April 11, 2017
    Assignee: NABTESCO CORPORATION
    Inventor: Masanori Hirai
  • Patent number: 9249845
    Abstract: A friction switch coupling for torque transmission from a rotor which can be driven about an axis to an element to be driven, including a friction disk clutch with an electromagnet arrangement which includes a coil body and a ferromagnetically conductive coil carrier supporting and at least partly surrounding the coil body, which the carrier has a web segment lying radially outermost in relation to the coil body and oriented parallel to the axis, and an inner web segment, and between the inner and outer web segments of the coil carrier are provided permanent magnet means via which an axially movable friction segment of the friction switch coupling can be connected magnetically with the rotor, so that when the electromagnet arrangement is in electrically connected state, by weakening of the magnetic attraction effect of the permanent magnet means, the contact of the friction segment on the rotor can be eliminated.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: February 2, 2016
    Assignee: Licos Trucktec GmbH
    Inventor: Jan Juergensmeyer
  • Patent number: 9035511
    Abstract: The electric motor consists of a rotor fitted with permanent magnets and comprises a stator the armature of which is made up of two parts: a stack of laminations forming round teeth and a solid tube-shaped field frame made of a material of the stainless steel kind enveloping the said stack of laminations. This armature constitutes a non-disengageable braking system that produces a damping effect in the face of possible movements of its rotor which are brought about and/or imposed by the members with which it collaborates. This motor can be used for driving a roto-linear actuator device with satellite rollers which is used as an actuator for maneuvering the control surfaces of an aircraft, for example an aileron.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: May 19, 2015
    Assignee: Sagem Defense Securite
    Inventor: Jérôme Piaton
  • Patent number: 8917003
    Abstract: A permanent magnet rotor for use on an electrical generator comprises a hub having an outer peripheral surface and an inner peripheral bore centered on an axis. The inner peripheral bore is provided with a screw thread at least over a portion of an axial dimension. Permanent magnets are mounted on the outer peripheral surface of the hub. A containment band is positioned radially outwardly of the magnets, holding the magnets and the hub together. The hub, a generator rotor incorporating the permanent magnet rotor, and a generator incorporating the permanent magnet rotor are also disclosed and claimed in this application.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: December 23, 2014
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Roy D. Rasmussen, Scott R. Ganong, Glenn C. Lemmers, Jr.
  • Publication number: 20140232303
    Abstract: A drive unit for operating a device, in particular a device in a vehicle and a method for operating a drive unit are provided. An electrical drive assembly and a break assembly are combined and arranged together in a common housing. The breaking assembly could be a mechanical breaking assembly or an electrical break assembly. The break assembly automatically locks the shaft of the electrical drive assembly and thus provides self-locking capabilities.
    Type: Application
    Filed: February 21, 2013
    Publication date: August 21, 2014
    Applicant: Brose Fahrzeugteile GmbH & Co. KG, Wurzburg
    Inventor: Brose Fahrzeugteile GmbH & Co. KG, Wurzburg
  • Publication number: 20140232225
    Abstract: The invention relates to a drive arrangement for an adjusting element of a motor vehicle, a clutch arrangement which is connected into the drive train with a drive connection and a driven connection, the clutch arrangement at any rate forwarding a movement which is introduced on the drive side to the driven connection and having a braking arrangement for braking a movement which is introduced on the output side. The braking arrangement has a braking element which can be adjusted counter to a braking force, in that, between the output connection and the braking element, the clutch arrangement has a freewheel arrangement comprising at least one freewheel pair of clamping body freewheels which operate in opposite directions, in that a movement which is introduced on the output side always brings about the blocking of at least one clamping body freewheel and is correspondingly braked via the braking arrangement.
    Type: Application
    Filed: September 27, 2012
    Publication date: August 21, 2014
    Applicant: BOSE FAHRSEUGTEILE GMBH & CO.KG COBURG
    Inventors: Sebastian Heinze, Alwin Macht
  • Publication number: 20130169087
    Abstract: The invention relates to a motor-driven device for actuating a movable panel (1) of a motor vehicle, including: a drive unit (3); a transmission element (5) which is to be set into motion by the motor unit (3); a braking module (7) for the transmission element (5), characterized in that the braking module (7) is connected to the transmission element (5) by a clutch module (9) positioned between the transmission element (5) and the drive unit (3), and comprising a wound spring (35) in friction contact with a brake shaft (23) connected to the braking module (7), as well as two coupling elements (25, 27) that are mutually engaged with a functional clearance therebetween, the relative change in position of said two coupling elements (25, 27) enabling the ends (37, 38) of said wound spring (35) to be controlled so as to switch the ends between an engaged position and a disengaged position of the braking module (7), wherein the two coupling elements (25, 27) are a drive element and a driven element, respectively.
    Type: Application
    Filed: July 14, 2011
    Publication date: July 4, 2013
    Applicant: VALEO SICHERHEITSSYSTEME GMBH
    Inventor: Frank Kummer
  • Patent number: 8441161
    Abstract: An electric motor drive device (1) includes a motor (11), a speed reducing part (31) to reduce speed of a rotation outputted from the motor (11) and transmit it to the side of a wheel, and a connection/disconnection part (21) to disconnect or connect rotation transmission of the speed reducing part, a motor side rotation member (18) serving as an input shaft to input the rotation from the motor (11), an output shaft (34) to output the rotation to the side of the wheel, a double shaft (33) arranged coaxially with the input shaft and including a tube-shaped outer side rotation shaft (33o) and an inner side rotation shaft (33i) inserted into the outer side rotation shaft.
    Type: Grant
    Filed: September 7, 2009
    Date of Patent: May 14, 2013
    Assignee: NTN Corporation
    Inventors: Tomoaki Makino, Fumihiro Isobe, Ken Yamamoto
  • Patent number: 8319384
    Abstract: In some examples, a system includes a brake rotor, a brake armature configured to engage with the brake rotor to substantially fix a rotational position of the brake rotor relative to the brake armature, and a mechanism mechanically coupled to the brake armature. The brake armature may be configured to rotate in a first rotational direction and a second rotational direction substantially opposite the first rotational direction. The mechanism may be configured to maintain the brake armature in a fixed rotational position when a torque applied to the brake armature in a second rotational direction is less than or equal to a threshold torque value. The mechanism also may be configured to permit rotation of the brake armature in the second rotational direction when torque on the brake armature in the second rotational direction exceeds the threshold torque value.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: November 27, 2012
    Assignee: Honeywell International Inc.
    Inventors: Casey Hanlon, James Neil Quitmeyer, David M. Eschborn, Carol Lynn Eschborn, legal representative
  • Patent number: 8274186
    Abstract: The present invention relates to a hybrid drive train for a motor vehicle, comprising a clutch arrangement having a first rotatable clutch part and a second rotatable clutch part, which clutch parts can be separated from one another and which can be connected to one another, and comprising an electrical machine which is arranged concentrically with respect to the first clutch part and has a rotor, wherein the rotor is connected with the first clutch part and comprises a plurality of magnetic flux influencing portions, the magnetic flux influencing portions being arranged distributed over the circumference of the rotor with a predetermined rotor pitch. Here, the first clutch part comprises a shaft toothing that is adapted to the rotor pitch.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: September 25, 2012
    Assignee: GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG
    Inventors: Uli Christian Blessing, Bernd Blankenbach, Benjamin Kesel, Winfried Schulz, Kevin Gutmann, Matthias Doelling, Mark Absenger
  • Patent number: 8205727
    Abstract: An electromagnetic brake (20), in particular for an electric drive is provided, having a brake body (3), which is provided with a sleeve-shaped permanent magnet (4), an electromagnet (5) with an exciting coil (6), an external ring in the form of an external pole and an internal ring (8) in the form of an internal pole, wherein an armature disc (12) rotatably connected to a shaft is attractable against the brake body (3) or the external or internal ring surfaces by the permanent magnet (4) force acting against a return spring force. When the exciting coil is powered, the permanent magnet (4) magnetic field is compensated in such a way that the armature disc (12) is lifted up from the brake body (3) by the spring force, thereby allowing the brake to be released.
    Type: Grant
    Filed: August 27, 2005
    Date of Patent: June 26, 2012
    Assignee: Kendrion Binder Magnete GmbH
    Inventors: Jurgen Berndt, Erwin Messner, Dirk Bottcher
  • Publication number: 20120098367
    Abstract: A clutch including a drive shaft, drive side rotation body, driven shaft, driven side rotation body, clutch housing, and lock member is disclosed. During non-rotation of the drive side rotation body, when the driven side rotation body is rotated, the lock member is pushed by the driven side rotation body and moved outward in a radial direction thereby bringing the contact portion into contact with the inner circumferential surface of the clutch housing. During rotation of the drive side rotation body, the drive side rotation body pushes a drive side cam surface in the rotation direction, and the drive side cam surface acts to move the lock member inward in the radial direction and push the lock member against the driven side rotation body. Thus, the lock member is sandwiched between the drive side rotation body and the driven side rotation body thereby coupling the drive side rotation body and the driven side rotation body with the lock member to be integrally rotatable.
    Type: Application
    Filed: June 22, 2010
    Publication date: April 26, 2012
    Applicant: ASMO CO., LTD.
    Inventors: Nobuo Mizutani, Tomoki Yamashita
  • Publication number: 20120080968
    Abstract: A magnetic braking motor system including a motor and a magnetic brake assembly. The motor includes a motor enclosure and a motor shaft rotatably mounted with respect to the motor enclosure. The magnetic brake assembly includes a rotating magnetic element and a stationary magnetic element. The rotating magnetic element is mounted with respect to the motor shaft. The stationary magnetic element is mounted with respect to the motor enclosure. A magnetic field is provided between the rotating magnetic element and the stationary magnetic element.
    Type: Application
    Filed: September 29, 2011
    Publication date: April 5, 2012
    Inventors: Steven J. Knight, James Edward Elsen
  • Patent number: 8067869
    Abstract: A hollow actuator includes a motor section, a reduction gear section, a brake section, a rotation position detecting section, and a shaft having a hollow shape and transmitting rotation, wherein the motor section and the brake section are disposed in a same chamber.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: November 29, 2011
    Assignee: Kabushiki Kaisha Yaskawa Denki
    Inventors: Ryuuichirou Tominaga, Tomohiro Matsuo
  • Patent number: 7944102
    Abstract: An electrical machine includes a stator having circumferentially arranged winding heads, with a winding head space being defined radially beneath the winding heads. Interacting with the stator is a rotor which has a rotatable laminated core. A magnetic brake is received in the winding head space and includes a magnet module having at least one permanent magnet which is axially resiliently fixed and constraint against rotation and which is magnetized in an axial direction, and an electromagnet which is arranged axially adjacent to the permanent magnet and securely fixed thereto. The electromagnet produces a magnetic field with a main direction oriented in an axial direction. Interacting with the at least one permanent magnet and the electromagnet is a ring-shaped armature which is secured directly and rigidly to the rotor so as to establish a fixed rotative engagement between the armature and the rotor.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: May 17, 2011
    Assignee: Siemens Aktiengesellschaft
    Inventor: Frank Eckert
  • Patent number: 7851956
    Abstract: An electric motor (10) with a low number of revolutions comprises a rotor (17) powered by three-phase alternating voltage, a series of magnets (21, 22) and a coil forming a stator (24), in which the rotor (17) and the stator (24) have the same number of magnetic poles. The stator (24) is powered with direct voltage, and the frequency of the rotor voltage (17) is varied to obtain a predetermined number of rpm of the motor and to vary the acceleration and deceleration conditions of the motor. A thrust bearing opposes the effort of the falling brake disc.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: December 14, 2010
    Inventor: Giorgio Jezek
  • Patent number: 7839252
    Abstract: A spool includes at least one bobbin and one winding wire, e.g., a winding wire lacquered for electrical insulation, the bobbin including at least one channel, e.g., one arranged as a pocket, at least one sleeve being electrically connected to the winding wire, the sleeve being electrically connected to an electrical line, e.g., a stranded conductor of a cable, the sleeve including deformable regions, for producing the electrical connections, a respectively deformable region being deformable such that a force-locking connection is provided and welding is able to be carried out.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: November 23, 2010
    Assignee: Sew-Eurodrive GmbH & Co. KG
    Inventors: Pascal Heinrich, Gerhard Flörchinger, Laurent Criqui, Jean-Pierre Lambling, Gerd Schüler
  • Patent number: 7839035
    Abstract: A power-driven rolling and receiving apparatus includes a housing, a DC brushless motor, a deceleration unit, a motor linker, a control and driving unit, and a first brake unit. The DC brushless motor, the deceleration unit, the motor linker, the control and driving unit and the first brake unit are received in the housing. Two ends of the motor linker are respectively connected with the deceleration unit and the DC brushless motor. The controlling and driving unit is connected with the DC brushless motor. The first brake is located in the controlling and driving unit. Thereby, the dimension of the power-driven rolling and receiving apparatus is smaller, its weight is lighter, its temperature is low and its operation noise is also low.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: November 23, 2010
    Inventor: Su-Yuan Hwaung
  • Patent number: 7804220
    Abstract: In a direct cranking electric rotary machine as an axial air-gap motor having an improved configuration mounted on a vehicle, a stator is faced to an end part on a surface of a rotor. The rotor also acts as a flywheel for an engine mounted on the vehicle. The length of a circumference of the stator is limited below 180 deg. of its entire circumference. This configuration enables a repair man to easily detach and repair components forming the direct cranking electric rotary machine.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: September 28, 2010
    Assignee: Denso Corporation
    Inventors: Masahiko Osada, Makoto Taniguchi
  • Patent number: 7772730
    Abstract: The present invention provides a magnetic wheel including a foundation body, a cover body, a fly wheel, a central axis, a drive motor, a drive gear assembly and two magnetic control strips. The drive gear assembly is driven by an output axis of the drive motor, enabling the swinging of the gear wheel of two magnetic control strips. The drive gear assembly has a gearshift unit, a coupling element and rear gear. The axial direction of the coupling element and rear gear is the same as the central axis of the magnetic wheel. The gear wheel of two magnetic control strips is mated with the rear gear through spur gear, thus making it easier to improve the manufacturing precision and drive efficiency and also reduce the manufacturing cost for better economic efficiency.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: August 10, 2010
    Assignee: Her Yuan Chyun Co., Ltd.
    Inventor: Hsien-Mo Lin
  • Patent number: 7690486
    Abstract: A drive mechanism includes an electric motor, a rotor driven by the electric motor, and a worm screw driven by the rotor. The drive mechanism further includes a wheel driven by the worm screw, the wheel transmitting movement of the electric motor to a vehicle closure, and a clutch on the rotor connecting the worm screw to the electric motor or disconnecting the worm screw from the electric motor.
    Type: Grant
    Filed: April 8, 2008
    Date of Patent: April 6, 2010
    Assignee: ArvinMeritor Light Vehicle Systems - France
    Inventors: Chris Rhodes, Paul Bizard
  • Patent number: 7686145
    Abstract: A drive device for electric vehicles comprises a casing 30, a motor 40 housed in the casing and having a rotating shaft 42, a housing 50 rotatably fitted around the casing and coupled to the outer end of the rotating shaft of the motor by a reduction gear mechanism 48, a drive wheel 80 provided around the housing and an electromagnetic brake 60 for arresting the rotation of the rotating shaft of the motor at the base end of the shaft. The rotating shaft of the motor is engaged with or disengaged from the electromagnetic brake by a clutch mechanism 70 provided between the shaft and the brake.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: March 30, 2010
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Takayoshi Akagi, Takuya Noro, Kazuhiro Tomoshige, Satoshi Komukai
  • Publication number: 20090230795
    Abstract: An article of furniture includes a drive device for moving a movable furniture part. The drive device includes an electric drive unit and a coupling device for at least temporarily transmitting a force of the electric drive unit to the movable furniture part, and the coupling device has a drive and a drive output. Operating between the drive and the drive output are coupling elements by which, in a first operating position, a clamping connection between the drive and the drive output and thus coupling between the drive and the drive output can be produced, and, in a second operating position, the coupling elements are movable into a position in which the drive and the drive output are not coupled.
    Type: Application
    Filed: April 22, 2009
    Publication date: September 17, 2009
    Inventor: Christian Hauer
  • Patent number: 7486036
    Abstract: When surplus power not charged to an electric storage is generated at the time of regenerative braking of a vehicle, a voltage is generated across first and second neutral points using a zero-voltage vector each of first and second inverters and the generated surplus power is consumed by a resistance connected across the first and second neutral points. The voltage generated across the first and second neutral points is calculated in accordance with the surplus voltage, using a resistance value of the resistance.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: February 3, 2009
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hichirosai Oyobe, Shoichi Sasaki, Makoto Nakamura, Tetsuhiro Ishikawa
  • Patent number: 7276833
    Abstract: An electromagnetic retarder system is disclosed. In one embodiment, the retarder system comprises: a shaft; a coil statically disposed on the shaft and having a hollow cylindrical shape; a yoke statically disposed on the shaft, the yoke having a first cylindrical surface and a second cylindrical surface, the second cylindrical surface disposed coaxial with said coil; at least one claw pole rotor mounted on the shaft, the at least one claw pole rotor formed of magnetic half wheels that taper into claws; and an induction drum disposed coaxial with the shaft and mounted so as to encompass the coil, the yoke and the at least one rotor.
    Type: Grant
    Filed: November 23, 2004
    Date of Patent: October 2, 2007
    Assignee: Jacobs Vehicle Systems, Inc.
    Inventors: Steven N. Ernest, Bai Hua, John Lester
  • Patent number: 6879072
    Abstract: An actuating device, specifically for actuating locking differentials on vehicles, having an actuating shaft, a drive unit to drive the actuating shaft, where the drive unit comprises an armature core mounted to the actuating shaft so as not to rotate, and a commutator mounted to the actuating shaft so as not to rotate and/or with an electromagnetic brake unit to slow and/or stop the actuating shaft, where the brake unit includes a brake hub flange mounted on the armature so as not to rotate and having a single- or multi-piece housing tightly enclosing the drive unit and the brake unit, where the free end of the actuating shaft extends from the housing and with a sensor to measure the angle of rotation of the shaft, where the sensor unit includes at least one trigger wheel indirectly coupled to the shaft and at least one sensor scanning the trigger wheel position and coupled indirectly to the housing.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: April 12, 2005
    Assignee: Valeo Motoren und Aktuatoren GmbH
    Inventors: Ronald Frey, Harald Schmidt, Johannes Helmich, Birgit Scheytt, Werner Baeskow
  • Publication number: 20040108177
    Abstract: A brake coupling combination for a motor, preferably an electric motor, consisting of a brake which can be attached to the motor, the brake having a flange (1) with which it is directly connected to a correspondingly shaped part of the motor, characterized in that the brake is mounted on the end of the shaft (9) of the motor by means of a hub (4) and that a flexible coupling (K) connects directly to the brake for connection to a second shaft.
    Type: Application
    Filed: September 24, 2003
    Publication date: June 10, 2004
    Inventors: Johann Eberle, Karl Eiband, Martin Hecht
  • Patent number: 6737776
    Abstract: A magnetostrictive motor is provided with a pair of clutch devices on a rotor shaft through which electrical energy from electromagnetic rings on a tubular reactor is converted into forces transferred to the rotor shaft within the reactor under selective control of magnetostrictors and clutches within the tubular reactor to either accelerate or decelerate motion imparted by such forces to the rotor shaft for change of rotor speed magnitude and direction.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: May 18, 2004
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Joseph P. Teter
  • Patent number: 6617727
    Abstract: A housing of a compressor supports a rotary shaft. The rotary shaft is coupled to a pulley with a pulley one-way clutch and is coupled to a rotor of an electric motor with a motor one-way clutch. The pulley is supported by the housing with a pulley bearing. The electric motor overlaps a power transmission portion in the axial direction of the rotary shaft. At least two of the bearing, the pulley one-way clutch, the motor one-way clutch, and a brush device of the electric motor overlap each other in the axial direction of the rotary shaft. As a result, the size of the compressor is reduced in the axial direction of the rotary shaft.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: September 9, 2003
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Jiro Iwasa, Taku Adaniya, Yasuharu Odachi, Takeshi Kawata, Kazuhiko Minami, Kazuo Murakami, Hirohito Hayashi
  • Patent number: 6232686
    Abstract: The invention relates to a hysteresis brake comprising a hysteresis ring (1) which is rotationally fixed to a roller (9), and a magnetic ring with magnetic poles. The magnetic ring (2) is made of permanent magnetic material and is mounted inside the hysteresis ring (1), wherein the magnetic poles are alternately along the external circumference of the magnet ring (2). The magnetic ring (2) encloses a supporting member (4), which is mounted in a rotationally secured position but which can be axially displaced around the axis by means of a regulating device (7).
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: May 15, 2001
    Assignee: ZF Friedrichshafen AG
    Inventor: Rudolf Schneider
  • Patent number: 6107714
    Abstract: A drive unit for a hoist, an elevator in particular, with a motor (6), a transmission (2), a breaking means (4) and a housing (8) is characterized in that said motor (6) and said breaking means are together arranged in said housing (8). Furthermore, at least one part of said transmission (2) can be arranged in said housing (8) as mounted or built-in transmission so that said housing (8) for the largest part also forms the transmission housing.
    Type: Grant
    Filed: June 15, 1998
    Date of Patent: August 22, 2000
    Assignee: Wittur Aufzugteile GmbH & Co.
    Inventor: Hubert Fischer
  • Patent number: 5949168
    Abstract: The invention relates to an electric motor having a locking device and a brake actuator for an electric system which includes such an electric motor. The locking brake has a simple configuration and includes a conical ring which is mounted so as to be axially displaceable on the motor shaft of the electric motor of the brake actuator. In a first axial position, the conical ring (26) permits a rotation of the motor shaft (12) in both directions and, in a second axial position, the conical ring is in engagement with the motor shaft (12) and rotates with the latter. In the second axial position of the conical ring (26), a rotation of the motor shaft (12) in one rotational direction leads to the situation that the conical ring (26) is in engagement with the lock ring (24) of the brake actuator (2). The lock ring (24) is fixed so that it cannot rotate relative to the motor shaft (12).
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: September 7, 1999
    Assignee: Continental Aktiengesellschaft
    Inventors: Thomas Dieckmann, Wulf Leitermann, Immanuel Henken
  • Patent number: 5847478
    Abstract: A self holding type connecting device comprising an armature which is disposed movably in an axial direction, a magnetic path member having a cross section formed along a closed loop and having an axial space wherein axial movement of the armature is permitted, a permanent magnet secured to the magnetic path member and forming two kinds of magnetic flux which pass through the armature and the magnetic path member, an electric magnetic coil which forms magnetic flux for moving the armature in an axial direction against the two kinds of magnetic flux, and switch for switching direction of the magnetic flux from the electric magnetic coil. In the device, decrease of connecting force due to abrasion of pads does not occur and power consumption can be remarkably reduced.
    Type: Grant
    Filed: February 26, 1997
    Date of Patent: December 8, 1998
    Assignee: Teijin Seiki Co., Ltd.
    Inventors: Hiroshi Usui, Shingo Nakagawa
  • Patent number: 5834874
    Abstract: Proportional control of the output of an alternator achieved mechanically to change the reluctance of the magnetic path between the stator and the rotor and thereby change the electrical output of the alternator.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: November 10, 1998
    Assignee: Outboard Marine Corporation
    Inventors: William R. Krueger, Daniel R. Dykstra, David W. Windstein
  • Patent number: 5773904
    Abstract: An electric machine which can be operated optionally as a motor or generator and in particular can be installed in the drive train of a motor vehicle with a hybrid drive. The machine includes a stator and a rotor of substantially cylindrical shape, The rotor is positioned about the stator to form a circumferential air gap between the stator and the rotor. An integrated switchable clutch is provided for the transmission of torque. The rotor is arranged on the outside (external-rotor machine) of the stator and the clutch is arranged within the stator.
    Type: Grant
    Filed: October 2, 1995
    Date of Patent: June 30, 1998
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Stefan Schiebold, Wolfgang Thieler
  • Patent number: 5739605
    Abstract: A bi-stable clutch is introduced comprising an input and output shaft, a hub assembly attached to output shaft, a hub assembly attached to output shaft and operatively associated with a friction ring which rotates with output shaft of the unique bi-stable clutch. The input shaft is connected to a rotor which drives an armature plate to which the rotor is rotatably attached. The rotor and armature plate are forced apart when the clutch is engaged creating an air gap between the two large enough to not be overcome by the permanent magnet field attracting the armature plate due to a force caused by compression coil springs and the armature plate remains in contact with the rotor and the clutch remains engaged without continuous current transmitting torque from the input to the output shaft.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: April 14, 1998
    Assignee: Electroid Co.,A Division of Valcor Engineering Corp.
    Inventor: Edward D. Lazorchak
  • Patent number: 5723923
    Abstract: A torque reaction/momentum wheel device for attitude control of a body, such as a spacecraft, having a motor driven flywheel with the flywheel at one end of a shaft and cantilevered with respect to at least two bearings which support the shaft which is common to the motor and flywheel, all having substantially the same spin axis. A housing which supports the motor and bearings is located all on one side of the flywheel which allows the flywheel to be balanced while mounted onto the shaft thus reducing dynamic unbalance forces. A cover is placed over the flywheel, motor, and housing so that the torque reaction/momentum wheel device can be pressurized which is necessary to prevent the bearing lubricant from migrating or evaporating out of the bearings. The bearings are lubricated by a grease which has low drag torque characteristics. This grease is a diester based oil with a lithium soap additive and filtered so that all particles are less than 10 microns in size.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: March 3, 1998
    Assignee: The United States of America as represented by the United States National Aeronautics and Space Administration
    Inventor: Charles E. Clagett
  • Patent number: 5712520
    Abstract: A conductor rotor presents a pair of electroconductive rings spaced apart to receive magnet carrying shoes with permanent magnets to induce eddy currents in the rings and thereby retard rotation of the conductor rotor. The shoes are moved in and out in a controlled manner to move between a retracted brake-off position and an extended brake-on position.
    Type: Grant
    Filed: March 18, 1996
    Date of Patent: January 27, 1998
    Assignee: Magna Force, Inc.
    Inventor: Karl J. Lamb
  • Patent number: 5473209
    Abstract: A braking system adapted to be used on the drive shaft of a vehicle has a rotor containing permanent magnets mounted on the shaft and preferably has a pair of non-rotary electroconductive plates separated by air gaps from the rotor on opposite sides thereof. The plates are slide mounted in a controlled manner on the vehicle chassis to vary the air gaps between brake-on (relatively narrow gap) and brake-off (relatively wide gap) positions.
    Type: Grant
    Filed: October 29, 1993
    Date of Patent: December 5, 1995
    Assignee: Magna Force, Inc.
    Inventor: Karl J. Lamb
  • Patent number: 5214332
    Abstract: A miniature electric motor having a magnetic clutch wherein the clutch includes a metallic element and a non-metallic element; the non-metallic element being operative to preclude physical contact between the motor and the metallic element of the clutch.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: May 25, 1993
    Assignee: ALPHA Corporation
    Inventor: Shunsaku Tsutsumi
  • Patent number: 5050711
    Abstract: A stationary brake member (45) which is used in an electromagnetic brake apparatus, comprises a first press-worked plate (45h) and a second press-worked plate (45m) which are laminated to each other. The second press-worked plate (45m) has plural hooks (45q), (45s) to grip the first press-worked plate (45h). The first press-worked plate (45h) has plural projections (45k) with spaces (45t) therebetween, and the projections are buried in the cast bracket (31), whereby the first press-worked plate (45h) is firmly fixed to the bracket (31).
    Type: Grant
    Filed: March 15, 1990
    Date of Patent: September 24, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Tatsuya Sawato
  • Patent number: 5023499
    Abstract: An eddy current type brake system adapted to a vehicle comprises a drum-like rotor mounted on an output shaft of a transmission of the vehicle, a stator provided in the rotor and being able to reciprocate in an axial direction of the rotor, a plurality of permanent magnets mounted on the stator, a brake force producing device provided between the stator and the rotor for magnetically connecting the permanent magnets of the stator with the rotor to apply brake force to the rotor, and a device for magnetically cutting the permanent magnets of the stator from the rotor to release the brake force from the rotor. When the stator is moved to a position to face the brake force producing device, the permanent magnets of the stator are connected to the rotor magnetically and the eddy current is produced in the rotor so that the rotating shaft is decelerated.
    Type: Grant
    Filed: August 28, 1990
    Date of Patent: June 11, 1991
    Assignee: Isuzu Motors Limited
    Inventor: Touru Kuwahara
  • Patent number: 4823926
    Abstract: In an electric motor regulating and control drive, especially for industrial sewing machines, a clutch-brake disk is mounted for co-rotation on an output shaft and has a clutch facing which can be brought into engagement with a clutch surface of a flywheel of the corresponding motor, and has a brake facing which can be brought into engagement with a brake surface of a brake-bearing plate. In order to achieve by simple means an effective suppression of impact noises when a braking action is initiated, at least the brake facing is mounted with damping with respect to the armature ring of the clutch-brake disk. It is preferably thrust against the armature ring by means of at least one annular spring.
    Type: Grant
    Filed: September 8, 1987
    Date of Patent: April 25, 1989
    Assignee: Frankl & Kirchner GmbH & Co. KG
    Inventors: Hilmar Wittler, Adolf Martin, Herbert Palloch
  • Patent number: 4811820
    Abstract: A disk brake motor comprises an electric motor having a housing, an electromagnet, at least one friction surface and a brake wheel which is in contact with the friction surface during braking, the brake wheel including an impeller for drawing in and impelling air so that the air flows tangentially of a surface of the electromagnet into the brake wheel and past the friction surface onto a surface of the housing of the electric motor.
    Type: Grant
    Filed: September 21, 1987
    Date of Patent: March 14, 1989
    Assignee: Kone Oy
    Inventor: Hannu Rossi
  • Patent number: 4790212
    Abstract: Engine brake clutch device comprising a common system of the electric machine type for transformation of mechanical energy associated with a differential system (27) and with a clutch (28), the unit being placed between the engine and the transmission so as to be able to perform the clutching or the engine braking of the vehicle.
    Type: Grant
    Filed: December 8, 1986
    Date of Patent: December 13, 1988
    Assignee: Renault Vehicules Industriels
    Inventor: Jean-Paul Sibeud
  • Patent number: 4777394
    Abstract: A miniature generator includes a cup-shaped supporting shell for fixing a yoke assembly, which supporting shell includes a bearing for a rotary shaft of a permanent magnet rotor. The rotary shaft of the rotor is provided with a worm which drives a worm gear engaging with it.
    Type: Grant
    Filed: July 8, 1987
    Date of Patent: October 11, 1988
    Assignee: Kabushiki Kaisha Sankyo Seiki Seisakusho
    Inventor: Katsuhiko Hayashi
  • Patent number: 4734604
    Abstract: A friction braking system located entirely inside an induction motor of an appliance quickly stops rotation of the rotor in the appliance motor, for example such as a food processor, whenever the A.C. electrical power is turned off. Thus, rotation of any tool being operated in the appliance is quickly stopped, whenever the electrical power is interrupted. The rotor in the induction motor is axially slidably mounted on the motor shaft and is keyed to the shaft for permitting axial shifting displacement of the rotor relative to the stator while preventing any angular displacement of the rotor relative to the shaft. Consequently, the rotor and shaft always turn and stop as a function unit. A friction brake lining is affixed within the motor housing offset from the axis of the motor shaft as far as practicable. A disc brake mounted onto the rotor has an annular friction braking surface positioned for engagement against the brake lining.
    Type: Grant
    Filed: August 1, 1986
    Date of Patent: March 29, 1988
    Assignee: Cuisinarts, Inc.
    Inventors: Carl G. Sontheimer, William R. Smith-Vaniz
  • Patent number: 4712660
    Abstract: An electromotive variable-speed and control drive particularly for use in industrial sewing machines comprising a motor capable of continuous drive with a disk flywheel and a brake-coupling unit connected to this motor. Cooling ribs confining cooling channels are disposed at the stator frame to achieve efficient cooling. A disk flywheel in the form of a fan is in the form of an axial-radial blower the suction area of which extends to the coupling surface of the disk flywheel. Furthermore, particularly intensive cooling of the brake end shield is possible.
    Type: Grant
    Filed: March 5, 1986
    Date of Patent: December 15, 1987
    Assignee: Frankl & Kirchner GmbH & Co KG
    Inventors: Hans Erndt, Erich Link, Adolf Martin, Herbert Palloch, Hilmar Wittler