Patents by Inventor Tuukka Korhonen

Tuukka Korhonen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190300329
    Abstract: The invention refers to an electric linear motor, control apparatus, transport system and a method. The electric linear motor comprises a longitudinal stator beam; at least one mover at least partially surrounding the stator beam and adapted to move along the stator beam; which stator beam comprises at least two side faces located at opposite sides of the stator beam, each of the side faces carrying ferromagnetic poles spaced apart by a pitch, and which mover comprises at least two counter-faces facing the respective side faces of the stator beam. The mover has in at least one of said counter-faces rotor units having at least one winding and at least one permanent magnet arranged to co-act with the ferromagnetic poles of the respective side faces of the stator beam.
    Type: Application
    Filed: February 12, 2019
    Publication date: October 3, 2019
    Applicant: Kone Corporation
    Inventors: Tuukka Korhonen, Tero Hakala, Pasi Raassina, Seppo Suur-Askola, Marko Hinkkanen, Seppo Saarakkala, Maksim Sokolov, Reza Hosseinzadeh
  • Publication number: 20190055109
    Abstract: A radial flux permanent magnet elevator motor includes a motor frame forming the stator frame having fixing points to be fixed to an elevator guide rail, which frame has a back wall facing and/or abutting with the guide rail, which motor frame includes an axially extending flange protruding away from the back wall in the direction of the rotor, and which motor frame includes at least one axially extending first wall section in a defined radial distance from the axis of the motor frame, which first wall section is configured to support a stator winding of the motor.
    Type: Application
    Filed: August 16, 2018
    Publication date: February 21, 2019
    Applicant: KONE Corporation
    Inventors: Tuukka Korhonen, Mika Virnes, Perttu Luukkonen
  • Patent number: 10189675
    Abstract: An adjustable brake controller of an elevator brake including a DC bus, first terminals for connecting the brake controller to a first magnetizing coil, second terminals for connecting the brake controller to a second magnetizing coil, a first controllable power switch coupled between the first terminals and the DC bus, the first controllable power switch being configured to supply electric power from the DC bus to the first magnetic coil responsive to a first control signal, a second controllable power switch coupled between the second terminals and the DC bus, the second controllable power switch being configured to supply electric power from the DC bus to the second magnetizing coil responsive to a second control signal, and a controller configured to generate the first and the second control signals for controlling the first and second power switches, respectively, with a brake open mode and a brake holding mode.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: January 29, 2019
    Assignee: Kone Corporation
    Inventors: Henri Wenlin, Tuukka Korhonen, Lauri Stolt, Ari Pikivirta, Arto Nakari
  • Publication number: 20180294704
    Abstract: A linear flux switching permanent magnet (FSPM) motor includes a longitudinal, linear stator with stator teeth facing an air gap and a mover including at least one armature including armature teeth embedding at least one permanent magnet, which armature teeth are spaced apart by slots for receiving an armature winding, and which armature teeth have an extended width portion towards the air gap. The extended width portion of the armature teeth begins in the longitudinal direction of the armature teeth already at the level of the armature windings.
    Type: Application
    Filed: April 4, 2018
    Publication date: October 11, 2018
    Applicant: KONE Corporation
    Inventors: Tero HAKALA, Tuukka KORHONEN, Tero PUROSTO, Ilya PETROV, Juha PYRHÖNEN
  • Publication number: 20180294705
    Abstract: A linear flux switching permanent magnet (FSPM) motor includes a longitudinal linear stator with stator teeth facing an air gap and a mover including at least one armature including armature teeth, which are spaced apart by slots for receiving an armature winding. At least some, preferably all of the armature teeth embed at least two permanent magnets, respectively, which are positioned successively in longitudinal direction of the tooth, whereby the two permanent magnets have different magnetic properties.
    Type: Application
    Filed: April 4, 2018
    Publication date: October 11, 2018
    Applicant: KONE Corporation
    Inventors: Tero HAKALA, Tuukka KORHONEN, Tero PUROSTO, Ilya PETROV, Juha PYRHÖNEN
  • Publication number: 20180294706
    Abstract: A linear flux switching permanent magnet (FSPM) motor includes a longitudinal linear stator with stator teeth facing an air gap and a mover including at least one armature with armature teeth, whereby at least some of said, preferably all of said armature teeth embed at least one permanent magnet, respectively, which armature teeth are spaced apart by slots for receiving an armature winding. The permanent magnets embedded in the corresponding armature teeth protrude by an overhang over the back of the armature in a direction facing away from the air gap.
    Type: Application
    Filed: April 4, 2018
    Publication date: October 11, 2018
    Applicant: KONE Corporation
    Inventors: Tero HAKALA, Tuukka KORHONEN, Tero PUROSTO, Ilya PETROV, Juha PYRHÖNEN
  • Patent number: 10087045
    Abstract: The system for controlling the opening and/or closing of a normally-closed machinery brake opening by means of at least one magnetizing coil and closing by means of at least one closing spring comprises: at least one estimation and control loop according to the invention and at least one measuring and control circuit according to the invention, which are connected or can be connected to each other, and of which a) the estimation and control loop is configured to use an input (I(t)) produced by the measuring and control circuit, and b) the measuring and control circuit is configured to use the modulation reference (UGE) produced by the estimation and control loop for connecting the voltage (U9) to be connected over the magnetizing coil.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: October 2, 2018
    Assignee: KONE CORPORATION
    Inventors: Lauri Stolt, Tuukka Korhonen
  • Publication number: 20180262146
    Abstract: An electric linear motor for an elevator and a method for controlling the operation thereof are presented. The electric linear motor comprises at least one stator beam and at least one mover, wherein said at least one stator beam comprises at least two stators on opposite sides of the stator beam, and the at least one mover is in electromagnetic engagement with said at least two stators and configured to be moved relative to said stator beam. Said at least one mover comprises at least two units of electromagnetic components arranged on opposite sides of the stator beam to face said at least two stators for controlling the movement and the position of the mover with respect to said stator beam.
    Type: Application
    Filed: February 20, 2018
    Publication date: September 13, 2018
    Applicant: KONE Corporation
    Inventors: Pasi RAASSINA, Seppo SUUR-ASKOLA, Jussi LÄHTEENMÄKI, Marko MINKKINEN, Tuukka KORHONEN
  • Patent number: 9800101
    Abstract: An axial flux motor intended for fixing to a machine comprises a stator stack as well as a rotor installed to rotate with respect to the stator stack, which rotor determines the axis of rotation. The stator stack comprises sectional slots on the side intersecting the axis of rotation, preferably the sectional slots include radial sectional slots or are radial sectional slots and/or there are 6-12 of them. Into each respective sectional slot a fixing part can be installed, which at least in the direction of the axis of rotation shape-locks into the sectional slot in question. The axial flux motor can be fixed to the machine by fixing at least some of the fixing parts to the machine.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: October 24, 2017
    Assignee: Kone Corporation
    Inventors: Asmo Tenhunen, Jussi Huppunen, Tuukka Korhonen
  • Publication number: 20170260022
    Abstract: A method for determining a speed of an electric motor of an elevator comprising a plurality of phases for supplying electric current to the electric motor. The method comprises forming an effective short-circuit between at least two of the plurality of phases of the electric motor, determining a short-circuit current, the short-circuit current being the current flowing in the effective short-circuit, and determining the speed of the electric motor based on at least one characteristic of the short-circuit current.
    Type: Application
    Filed: February 13, 2017
    Publication date: September 14, 2017
    Applicant: KONE Corporation
    Inventor: Tuukka KORHONEN
  • Publication number: 20170253460
    Abstract: An adjustable brake controller of an elevator brake comprises a DC bus; first terminals for connecting the brake controller to a first magnetizing coil; second terminals for connecting the brake controller to a second magnetizing coil; a first controllable power switch coupled between the first terminals and the DC bus, the first controllable power switch being configured to supply electric power from the DC bus to the first magnetic coil responsive to a first control signal; a second controllable power switch coupled between the second terminals and the DC bus, the second controllable power switch being configured to supply electric power from the DC bus to the second magnetizing coil responsive to a second control signal; and a controller configured to generate the first and the second control signals for controlling the first and second power switches, respectively.
    Type: Application
    Filed: February 6, 2017
    Publication date: September 7, 2017
    Applicant: Kone Corporation
    Inventors: HENRI VAKKAMAKI, Tuukka KORHONEN, Lauri STOLT, Ari PIKIVIRTA, Arto NAKARI
  • Publication number: 20170166418
    Abstract: The invention concerns an overspeed governor and an elevator comprising the same. The overspeed governor comprises a governor sheave, a permanent magnet rotor coupled to the governor sheave, a stator arranged to interact with the permanent magnet rotor, a safety gear for braking movement of an elevator car and a safety rope fixed to the safety gear and arranged to run via the governor sheave. Said stator includes a winding adapted to exert, when energized, to the permanent magnet rotor a braking force that brakes movement of the permanent magnet rotor and, consequently, movement of the governor sheave and the safety rope, thereby activating the safety gear.
    Type: Application
    Filed: February 24, 2017
    Publication date: June 15, 2017
    Applicant: Kone Corporation
    Inventors: Henri VAKKAMAKI, Tuukka KORHONEN
  • Publication number: 20170066624
    Abstract: The system for controlling the opening and/or closing of a normally-closed machinery brake opening by means of at least one magnetizing coil and closing by means of at least one closing spring comprises: at least one estimation and control loop according to the invention and at least one measuring and control circuit according to the invention, which are connected or can be connected to each other, and of which a) the estimation and control loop is configured to use an input (I(t)) produced by the measuring and control circuit, and b) the measuring and control circuit is configured to use the modulation reference (UGE) produced by the estimation and control loop for connecting the voltage (U9) to be connected over the magnetizing coil.
    Type: Application
    Filed: November 21, 2016
    Publication date: March 9, 2017
    Applicant: Kone Corporation
    Inventors: Lauri STOLT, Tuukka KORHONEN
  • Publication number: 20150171671
    Abstract: An axial flux motor intended for fixing to a machine comprises a stator stack as well as a rotor installed to rotate with respect to the stator stack, which rotor determines the axis of rotation. The stator stack comprises sectional slots on the side intersecting the axis of rotation, preferably the sectional slots include radial sectional slots or are radial sectional slots and/or there are 6-12 of them. Into each respective sectional slot a fixing part can be installed, which at least in the direction of the axis of rotation shape-locks into the sectional slot in question. The axial flux motor can be fixed to the machine by fixing at least some of the fixing parts to the machine. The patent application includes a parallel claim for a method for fixing an axial flux motor to a machine.
    Type: Application
    Filed: February 27, 2015
    Publication date: June 18, 2015
    Applicant: Kone Corporation
    Inventors: Asmo TENHUNEN, Jussi HUPPUNEN, Tuukka KORHONEN
  • Publication number: 20140203227
    Abstract: An elevator motor includes a rotor with a rotor body carrying a traction sheave as well as a brake surface configured to be gripped by a motor brake. The brake surface of the rotor is provided on a separate brake element which is separated from the rotor body, and the brake element is connected to the rotor body only via spaced apart connections. This solution leads to a reduced noise propagation of the elevator rotor.
    Type: Application
    Filed: January 23, 2014
    Publication date: July 24, 2014
    Applicant: KONE Corporation
    Inventors: Gabriela SIMBIEROWICZ, Hannu LEHTINEN, Mika VIRNES, Perttu LUUKKONEN, Tuukka KORHONEN
  • Patent number: 8596420
    Abstract: A measuring arrangement for the measurement of the position and/or movement of a rotor of an electric machine, an electric drive including the measuring arrangement, and an elevator system including the electric drive are provided. The measuring arrangement includes a magnetic band whose magnetic property is so implemented that it varies in the longitudinal direction of the band.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: December 3, 2013
    Assignee: Kone Corporation
    Inventors: Tuukka Korhonen, Asmo Tenhunen, Jussi Lahteenmaki, Jussi Huppunen
  • Patent number: 8360211
    Abstract: A hoisting machine and an elevator system including the hoisting machine are provided. The hoisting machine includes a measuring arrangement for determining the position and/or movement of the rotor of a hoisting machine. The measuring arrangement includes a magnetic band whose magnetic property is so implemented that it varies in the longitudinal direction of the band.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: January 29, 2013
    Assignee: Kone Corporation
    Inventors: Tuukka Korhonen, Asmo Tenhunen, Jussi Lähteenmäki, Jussi Huppunen
  • Publication number: 20120181119
    Abstract: A measuring arrangement, an electric drive and an elevator system are provided for determining the position and/or movement of the rotor of an electric machine. The measuring arrangement includes a magnetic band whose magnetic property is so implemented that it varies in the longitudinal direction of the band.
    Type: Application
    Filed: March 23, 2012
    Publication date: July 19, 2012
    Inventors: Tuukka KORHONEN, Asmo Tenhunen, Jussi Lähteenmäki, Jussi Huppunen
  • Patent number: 8205721
    Abstract: A method and an arrangement for controlling a brake of an elevator. In the method a plurality of optional objectives of operation are determined for the elevator; one or more of these objectives is selected at a time to be implemented as an objective of the operation of the elevator by using selection criterion; references for the energizing current of the brake of the elevator that differ from each other and/or references for the closing current of the brake of the elevator that differ from each other are determined; the brake current reference used at any given time is selected so that the selected brake current reference best corresponds to an objective of the operation of the elevator to be implemented; and also the brake of the elevator is controlled by adjusting the brake current towards the selected brake current reference.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: June 26, 2012
    Assignee: Kone Corporation
    Inventors: Tuukka Korhonen, Asmo Tenhunen, Petri Alkula, Mika Olkkonen, Jussi Huppunen, Jyrki Laaksonheimo
  • Publication number: 20110308894
    Abstract: A method and an arrangement for controlling a brake of an elevator. In the method a plurality of optional objectives of operation are determined for the elevator; one or more of these objectives is selected at a time to be implemented as an objective of the operation of the elevator by using selection criterion; references for the energizing current of the brake of the elevator that differ from each other and/or references for the closing current of the brake of the elevator that differ from each other are determined; the brake current reference used at any given time is selected so that the selected brake current reference best corresponds to an objective of the operation of the elevator to be implemented; and also the brake of the elevator is controlled by adjusting the brake current towards the selected brake current reference.
    Type: Application
    Filed: August 5, 2011
    Publication date: December 22, 2011
    Applicant: KONE Corporation
    Inventors: Tuukka Korhonen, Asmo Tenhunen, Petri Alkula, Mika Olkkonen, Jussi Huppunen, Jyrki Laaksonheimo