Patents by Inventor Petri Alkula

Petri Alkula 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: 20210155450
    Abstract: An elevator disc brake assembly includes at least two separate operating disc brake units mounted substantially sequentially on the periphery of the brake disc of an elevator driving machinery where the brake disc and a traction sheave are rotated by a drive motor of the driving machinery. At least one of the disc brake units includes two or more separate brake plates to be pressed against the brake disc.
    Type: Application
    Filed: February 2, 2021
    Publication date: May 27, 2021
    Applicant: KONE Corporation
    Inventors: Henri Wenlin, Antti Saarelainen, Petri Alkula, Lasse Hurri, Andrej Burakov, Joni Lappalainen
  • Publication number: 20210155449
    Abstract: An elevator brake arrangement includes at least a brake unit including a body, a brake plate assembly, a spring assembly, an electromagnet arrangement and a counter element, and also a rotating brake disc. The brake plate assembly includes at least two brake plates and a state detector that is arranged to monitor the operation states of the brake plates.
    Type: Application
    Filed: February 2, 2021
    Publication date: May 27, 2021
    Applicant: KONE CORPORATION
    Inventors: Henri WENLIN, Joni LAPPALAINEN, Petri ALKULA, Mikko JUSSILA, Andrej BURAKOV, Lasse HURRI, Tarmo TORKKELI
  • Publication number: 20200062545
    Abstract: An elevator safety brake unit, an elevator including at least two of the safety brake units, and a method for testing the safety brake units are disclosed. Each safety brake unit includes a frame part, a movable composition movably supported on the frame part, a compression spring assembly associated with the movable composition, and adapted to activate a braking by pushing the movable composition forward, and a coil assembly of an electromagnet disposed in the frame part and adapted to deactivate the braking by pulling the movable composition backwards. Each movable composition includes at least two movable elements, one compression spring for each movable element, and at least one coil assembly adapted to deactivate the braking by pulling the at least two movable elements backwards.
    Type: Application
    Filed: August 21, 2019
    Publication date: February 27, 2020
    Applicant: KONE Corporation
    Inventors: Joni LAPPALAINEN, Henri WENLIN, Antti SAARELAINEN, Petri ALKULA, Lasse HURRI, Andrej BURAKOV, Leena RANTA
  • Patent number: 10243423
    Abstract: An axial flux motor includes a first motor body part to which a stator including ferromagnetic stator cores and coils has been attached, a second motor body part attached to the first motor body part, a rotor including a number of magnets between the first and the second motor body parts, arranged against the stator in such a manner that an air gap remains between the rotor and the stator; and at least one bearing between the rotor and the stator. The axial flux motor further includes a bearing block cover attached to cover the bearing. A bearing block cover, elevator and a method of compensating manufacturing tolerances in an axial flux motor are also provided.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: March 26, 2019
    Assignee: KONE CORPORATION
    Inventors: Petri Alkula, Timo Avantola
  • Patent number: 9688511
    Abstract: The invention relates to a brake and to a method for controlling the brake. The brake comprises a base part, a braking piece movably supported on the base part, which braking piece is configured to be moved between a braking position and a releasing position, a spring, with the spring force of which the braking piece can be dropped into a braking position, a support member for limiting the initial position of the drop-out movement of the braking piece and also a controllable actuator, which is mechanically connected to the aforementioned support member and configured to displace the initial position of the drop-out movement of the braking piece with respect to the braking position.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: June 27, 2017
    Assignee: KONE CORPORATION
    Inventors: Mika Olkkonen, Petri Alkula, Raimo Pelto-Huikko
  • Publication number: 20160254721
    Abstract: An axial flux motor includes a first motor body part to which a stator including ferromagnetic stator cores and coils has been attached, a second motor body part attached to the first motor body part, a rotor including a number of magnets between the first and the second motor body parts, arranged against the stator in such a manner that an air gap remains between the rotor and the stator; and at least one bearing between the rotor and the stator. The axial flux motor further includes a bearing block cover attached to cover the bearing. A bearing block cover, elevator and a method of compensating manufacturing tolerances in an axial flux motor are also provided.
    Type: Application
    Filed: May 9, 2016
    Publication date: September 1, 2016
    Applicant: KONE Corporation
    Inventors: Petri Alkula, Timo Avantola
  • Patent number: 9341219
    Abstract: A mechanical fixing interface for fixing a machinery brake in a hoisting machine, a machinery brake, and a method for installing the machinery brake are disclosed. The fixing interface is formed in the frame part of the hoisting machine. The fixing interface includes two fixing surfaces for receiving the fixing lugs of the machinery brake, and between the fixing surfaces is a space for the machinery brake.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: May 17, 2016
    Assignee: KONE CORPORATION
    Inventors: Janne Rahunen, Petri Alkula, Mika Virnes, Mika Olkkonen
  • Patent number: 9309092
    Abstract: The invention relates to a fixing arrangement of a hoisting machine, in which arrangement the hoisting machine comprises a stationary structure as well as a rotating structure; which rotating structure comprises a traction sheave, which comprises a traction surface for exerting a force effect; and in which fixing arrangement the hoisting machine is fixed with fixing means to an elongated support structure such that the hoisting machine is fixed to the support structure from at least two points that are situated apart in the width direction (w) of the support structure for damping the vibration caused by the operation of the hoisting machine.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: April 12, 2016
    Assignee: KONE CORPORATION
    Inventors: Asmo Tenhunen, Petri Alkula, Jussi Huppunen, Mika Virnes, Gabriela Simbierowicz
  • Publication number: 20150129365
    Abstract: The invention relates to a brake and to a method for controlling the brake. The brake comprises a base part, a braking piece movably supported on the base part, which braking piece is configured to be moved between a braking position and a releasing position, a spring, with the spring force of which the braking piece can be dropped into a braking position, a support member for limiting the initial position of the drop-out movement of the braking piece and also a controllable actuator, which is mechanically connected to the aforementioned support member and configured to displace the initial position of the drop-out movement of the braking piece with respect to the braking position.
    Type: Application
    Filed: January 26, 2015
    Publication date: May 14, 2015
    Applicant: KONE Corporation
    Inventors: Mika OLKKONEN, Petri ALKULA, Raimo PELTO-HUIKKO
  • Patent number: 8727075
    Abstract: An arrangement and a method for supervising the operation of a brake includes a controllable electromechanical brake, including a magnetic circuit with at least two ferromagnetic parts fitted to move in relation to each other. A thrusting force is exerted between the ferromagnetic parts via a spring. The brake includes a magnetizing coil fitted into the magnetic circuit, for forming magnetic attraction between the parts of the brake. The arrangement includes a control of the brake, which includes at least one controllable switch, for adjusting the electricity supply of the magnetizing coil. The control of the brake comprises a supervision of the movement of the magnetic circuit of the brake.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: May 20, 2014
    Assignee: Kone Corporation
    Inventors: Jussi Huppunen, Asmo Tenhunen, Petri Alkula, Mika Olkkonen, Tuukka Kauppinen
  • Publication number: 20130306414
    Abstract: A mechanical fixing interface for fixing a machinery brake in a hoisting machine, a machinery brake, and a method for installing the machinery brake are disclosed. The fixing interface is formed in the frame part of the hoisting machine. The fixing interface includes two fixing surfaces for receiving the fixing lugs of the machinery brake, and between the fixing surfaces is a space for the machinery brake.
    Type: Application
    Filed: July 19, 2013
    Publication date: November 21, 2013
    Applicant: KONE Corporation
    Inventors: Janne Rahunen, Petri Alkula, Mika Virnes, Mika Olkkonen
  • Publication number: 20130081904
    Abstract: The invention relates to a fixing arrangement of a hoisting machine, in which arrangement the hoisting machine comprises a stationary structure as well as a rotating structure; which rotating structure comprises a traction sheave, which comprises a traction surface for exerting a force effect; and in which fixing arrangement the hoisting machine is fixed with fixing means to an elongated support structure such that the hoisting machine is fixed to the support structure from at least two points that are situated apart in the width direction (w) of the support structure for damping the vibration caused by the operation of the hoisting machine.
    Type: Application
    Filed: November 26, 2012
    Publication date: April 4, 2013
    Inventors: Asmo TENHUNEN, Petri ALKULA, Jussi HUPPUNEN, Mika VIRNES, Gabriela SIMBIEROWICZ
  • 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
  • Publication number: 20110198167
    Abstract: An arrangement and a method for supervising the operation of a brake includes a controllable electromechanical brake, including a magnetic circuit with at least two ferromagnetic parts fitted to move in relation to each other. A thrusting force is exerted between the ferromagnetic parts via a spring. The brake includes a magnetizing coil fitted into the magnetic circuit, for forming magnetic attraction between the parts of the brake. The arrangement includes a control of the brake, which includes at least one controllable switch, for adjusting the electricity supply of the magnetizing coil. The control of the brake comprises a supervision of the movement of the magnetic circuit of the brake.
    Type: Application
    Filed: April 28, 2011
    Publication date: August 18, 2011
    Inventors: Jussi Huppunen, Asmo Tenhunen, Petri Alkula, Mika Olkkonen, Tuukka Kauppinen
  • Patent number: 7928624
    Abstract: The present invention relates to an electric motor and to a method for manufacturing an electric motor. The electric motor comprises at least a stator (24), a rotor (25) and an air gap (26) between these, in which motor the stator and/or rotor comprises slots (4) and teeth (5) between slots, and in which the stator and/or rotor has a concentrated winding fitted in the slots. In the method of the invention, the phase windings are fitted as a concentrated fractional-slot winding.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: April 19, 2011
    Assignee: Kone Corporation
    Inventors: Jussi Huppunen, Asmo Tenhunen, Petri Alkula, Mika Olkkonen
  • Publication number: 20090251024
    Abstract: The present invention relates to an electric motor and to a method for manufacturing an electric motor. The electric motor comprises at least a stator (24), a rotor (25) and an air gap (26) between these, in which motor the stator and/or rotor comprises slots (4) and teeth (5) between slots, and in which the stator and/or rotor has a concentrated winding fitted in the slots. In the method of the invention, the phase windings are fitted as a concentrated fractional-slot winding.
    Type: Application
    Filed: June 17, 2009
    Publication date: October 8, 2009
    Inventors: Jussi HUPPUNEN, Asmo Tenhunen, Petri Alkula, Mika Olkkonen