Patents by Inventor Jyrki Laaksonheimo
Jyrki Laaksonheimo 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).
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Publication number: 20210139275Abstract: According to an aspect, there is provided an elevator parking brake comprising brake pads configured to provide a braking force against a guide rail in a loading and unloading situation of an elevator car; and at least one sensor. The elevator parking brake is configured to allow a predetermined amount of movement within the elevator parking brake in the loading and unloading situation of the elevator car, and the at least one sensor is configured to provide at least one indication associated with the movement within the elevator parking brake in the loading and unloading situation of the elevator car.Type: ApplicationFiled: October 15, 2020Publication date: May 13, 2021Applicant: Kone CorporationInventors: Antti KOSKINEN, Petri HARTIKAINEN, Pekka HALLIKAINEN, Janne SALOMAKI, Antti SAARELAINEN, Henri WENLIN, Risto JOKINEN, Timo VLASOV, Mikko PURANEN, Esa PUTKINEN, Jyrki LAAKSONHEIMO, Lauri STOLT, Tuukka KAUPPINEN, Jarkko SALORANTA, Hilkka HAMALAINEN, Sami SAARELA
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Patent number: 10769867Abstract: Maintenance of a transportation device propelled by an electric motor, wherein an incremental encoder senses motion of a moving part of, or a part moved by, the electric motor, may include acquiring a pulses-per-rotation configuration value PPRconf, representing a quantity of pulses which should be provided by the incremental encoder per one rotation of the electric motor; deriving a pulses-per-rotation estimation value PPRest representing a quantity of pulses provided by the incremental encoder per one rotation of the electric motor; determining a pulses-per-rotation error value PPRerr representing a deviation of the pulses-per-rotation estimation value PPRest from the pulses-per-rotation configuration value PPRconf, based on a relation: PPRerr=PPRest?PPRconf, PPRconf?PPRest, PPRest/PPRconf, or PPRconf/PPRest; and utilizing the pulses-per-rotation error value PPRerr to generate an instance of maintenance information indicating that a maintenance operation should be performed on the transportation device.Type: GrantFiled: November 26, 2018Date of Patent: September 8, 2020Assignee: Kone CorporationInventors: Matti Mustonen, Jyrki Laaksonheimo
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Patent number: 10472203Abstract: The invention relates to a method and an apparatus the invention is a method for automatic configuration of an elevator drive in a traction elevator comprising an elevator car, a counterweight, a traction sheave, an electrical motor and a plurality of elevator ropes arranged to hoist the elevator car in response to the electrical motor rotating the traction sheave. The method comprises obtaining a plurality of electrical motor parameters from a memory associated with the electrical motor. A drive computer unit determines a roping ratio of the elevator by driving the elevator a distance based on elevator position sensor information and determines a plurality of torque values required to hoist the elevator with a predefined starting acceleration when the elevator car is loaded with a respective plurality of different loads. The torque values per each load are stored to a memory of the drive computer unit.Type: GrantFiled: September 23, 2016Date of Patent: November 12, 2019Assignee: Kone CorporationInventors: Ari Kattainen, Jyrki Laaksonheimo
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Publication number: 20190197796Abstract: This invention relates to a method for maintenance of a transportation device propelled by an electric motor, wherein an incremental encoder senses motion of a moving part of or a part moved by said electric motor, wherein a motor model is used in control of said electric motor, wherein said method comprises: acquiring a pulses-per-rotation configuration value PPRconf, representing a number of pulses which should be provided by the incremental encoder per one rotation of the electric motor in normal operation; deriving a pulses-per-rotation estimation value PPRest representing a number of pulses per one rotation of the electric motor, based on motor model information of the electrical motor control; determining a pulses-per-rotation error value PPRerr representing a deviation of the pulses-per-rotation estimation value PPRest from the pulses-per-rotation configuration value PPRconf, based on the relation: PPRerr=PPRest?PPRconf or PPRconf?PPRest or PPRest/PPRconf or PPRconf/PPRest; and utilizingType: ApplicationFiled: November 26, 2018Publication date: June 27, 2019Applicant: Kone CorporationInventors: Matti Mustonen, Jyrki Laaksonheimo
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Patent number: 10202257Abstract: In the method for increasing the availability of an elevator standing unused at a landing the ambient temperature of at least one electrical device of the elevator is measured; and when the ambient temperature falls below a threshold value, electric current is conducted to at least one electrical device of the elevator for warming the electrical device in question. The patent application also includes an independent claim for a system for increasing the availability of an elevator standing unused at a landing.Type: GrantFiled: February 10, 2015Date of Patent: February 12, 2019Assignee: Kone CorporationInventors: Jyrki Laaksonheimo, Pasi Raassina
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Patent number: 9604819Abstract: A monitoring arrangement including a drop-out safety device associated with an elevator; an elevator component in operational connection with the drop-out safety device of the elevator; a measuring device configured to generate measuring data associated with operation of the elevator component; and a monitoring unit configured to, record, in a memory, one or more limit values associated with the measuring data, receive the measuring data from the measuring device, compare the measuring data to the one or more limit values, and—determine that the operating safety of the drop-out safety device is endangered, if the measuring data deviates from the one or more limit values, and form a monitoring signal, if the monitoring unit determines that the operating safety of the drop-out safety device is endangered.Type: GrantFiled: March 20, 2014Date of Patent: March 28, 2017Assignee: Kone CorporationInventors: Ari Kattainen, Pekka Hytti, Jyrki Laaksonheimo
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Publication number: 20170008730Abstract: The invention relates to a method and an apparatus the invention is a method for automatic configuration of an elevator drive in a traction elevator comprising an elevator car, a counterweight, a traction sheave, an electrical motor and a plurality of elevator ropes arranged to hoist the elevator car in response to the electrical motor rotating the traction sheave. The method comprises obtaining a plurality of electrical motor parameters from a memory associated with the electrical motor. A drive computer unit determines a roping ratio of the elevator by driving the elevator a distance based on elevator position sensor information and determines a plurality of torque values required to hoist the elevator with a predefined starting acceleration when the elevator car is loaded with a respective plurality of different loads. The torque values per each load are stored to a memory of the drive computer unit.Type: ApplicationFiled: September 23, 2016Publication date: January 12, 2017Applicant: Kone CorporationInventors: Ari KATTAINEN, Jyrki LAAKSONHEIMO
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Publication number: 20150175386Abstract: In the method for increasing the availability of an elevator standing unused at a landing the ambient temperature of at least one electrical device of the elevator is measured; and when the ambient temperature falls below a threshold value, electric current is conducted to at least one electrical device of the elevator for warming the electrical device in question. The patent application also includes an independent claim for a system for increasing the availability of an elevator standing unused at a landing.Type: ApplicationFiled: February 10, 2015Publication date: June 25, 2015Applicant: KONE CORPORATIONInventors: Jyrki LAAKSONHEIMO, Pasi RAASSINA
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Publication number: 20140202798Abstract: A monitoring arrangement of an elevator and to a method for monitoring an elevator. The monitoring arrangement of an elevator comprises a drop-out safety device of the elevator, an elevator component, which is in operational connection with the drop-out safety device of the elevator, a measuring device, with which the operation of the aforementioned elevator component is measured, and also a monitoring unit, comprising an input for the measuring data of the aforementioned measuring device as well as a memory for setting one or more boundary conditions to be connected to the safe operation of the elevator component. The monitoring unit is configured to receive measuring data from the aforementioned measuring device and also to determine that the operating safety of a drop-out safety device of the elevator is endangered if the measuring data received does not fulfill the boundary conditions set for the safe operation of the elevator component.Type: ApplicationFiled: March 20, 2014Publication date: July 24, 2014Applicant: KONE CORPORATIONInventors: Ari KATTAINEN, Pekka HYTTI, Jyrki LAAKSONHEIMO
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Patent number: 8235180Abstract: An elevator system and a brake control circuit include a first switch that controls the electricity supply of the winding of the brake, which switch is connected in a controlled manner with the control of the electricity supply of the winding of the brake, and thus the braking function is controlled.Type: GrantFiled: July 22, 2011Date of Patent: August 7, 2012Assignee: Kone CorporationInventors: Ari Kattainen, Jyrki Laaksonheimo
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Patent number: 8205721Abstract: 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: GrantFiled: August 5, 2011Date of Patent: June 26, 2012Assignee: Kone CorporationInventors: Tuukka Korhonen, Asmo Tenhunen, Petri Alkula, Mika Olkkonen, Jussi Huppunen, Jyrki Laaksonheimo
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Patent number: 8177033Abstract: A transportation system and a method are provided for backing up the operational state of a transportation system. The transportation system includes a control apparatus for controlling the operation of the transportation system. The control apparatus further includes capacitive energy storage and a power supply backup circuit adapted to maintain power supply from the said energy storage to a storage circuit for a given length of time in connection with an operational anomaly in power supply to the control apparatus.Type: GrantFiled: July 1, 2011Date of Patent: May 15, 2012Assignee: Kone CorporationInventors: Tuukka Kauppinen, Jyrki Laaksonheimo, Pekka Hytti
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Publication number: 20110308894Abstract: 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: ApplicationFiled: August 5, 2011Publication date: December 22, 2011Applicant: KONE CorporationInventors: Tuukka Korhonen, Asmo Tenhunen, Petri Alkula, Mika Olkkonen, Jussi Huppunen, Jyrki Laaksonheimo
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Publication number: 20110290593Abstract: A transportation system and a method are provided for backing up the operational state of a transportation system. The transportation system includes a control apparatus for controlling the operation of the transportation system. The control apparatus further includes capacitive energy storage and a power supply backup circuit adapted to maintain power supply from the said energy storage to a storage circuit for a given length of time in connection with an operational anomaly in power supply to the control apparatus.Type: ApplicationFiled: July 1, 2011Publication date: December 1, 2011Applicant: KONE CORPORATIONInventors: Tuukka KAUPPINEN, Jyrki LAAKSONHEIMO, Pekka HYTTI
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Publication number: 20110278099Abstract: An elevator system and a brake control circuit include a first switch that controls the electricity supply of the winding of the brake, which switch is connected in a controlled manner with the control of the electricity supply of the winding of the brake, and thus the braking function is controlled.Type: ApplicationFiled: July 22, 2011Publication date: November 17, 2011Inventors: Ari KATTAINEN, Jyrki LAAKSONHEIMO
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Patent number: 7339343Abstract: A method for correcting speed feedback in a drive motor by calculating the averages of speed reference and speed measurement for both downward and upward constant-speed travel and then identifying the gain and zero factors and correcting the measured speed measurement to the correct value.Type: GrantFiled: January 14, 2004Date of Patent: March 4, 2008Assignee: Kone CorporationInventor: Jyrki Laaksonheimo
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Publication number: 20040145335Abstract: A method for correcting speed feedback in a synchronous permanent-magnet motor by calculating the averages of speed reference and speed measurement for both downward and upward constant-speed travel and then identifying the gain and zero factors and correcting the measured speed measurement value to the correct value.Type: ApplicationFiled: January 14, 2004Publication date: July 29, 2004Inventor: Jyrki Laaksonheimo
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Patent number: 6515444Abstract: The invention relates to a method for controlling an alternating-current motor fed from a current-controlled alternating-current source, in which method the effect of harmonic moments generated in the motor is compensated. According to the invention, the torque of the motor is regulated by means of a current reference and that the current reference is corrected to compensate the harmonic moment.Type: GrantFiled: March 27, 2001Date of Patent: February 4, 2003Assignee: Kone CorporationInventors: Pekka Jahkonen, Jyrki Laaksonheimo, Ekso Aulanko