Patents by Inventor Pasi Raassina
Pasi Raassina 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: 20180334362Abstract: A wireless power transfer arrangement for an elevator car of an elevator is presented. The wireless power transfer arrangement comprises primary winding units distantly arranged with respect to each other at first positions of an elevator shaft along which the elevator car is configured to be moved, at least one secondary winding unit arranged to the elevator car. Each one of the primary winding units and the at least one secondary winding unit are arranged so that there is a gap between said winding units for enabling movement of the secondary winding unit with respect to the primary winding units and for establishing an inductive coupling between said winding units whenever said winding units are arranged to face each other at one of the first positions.Type: ApplicationFiled: May 3, 2018Publication date: November 22, 2018Applicant: Kone CorporationInventors: Pasi RAASSINA, Seppo SUUR-ASKOLA, Ilya PETROV, Pekka PERUNKA
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Publication number: 20180282123Abstract: A drive device of an elevator includes a frequency converter to be connected to a public AC supply network and an elevator motor. The frequency converter includes a network rectifier configured to be connected to the AC supply network, a motor bridge to be connected to the elevator motor and a DC intermediate circuit located between the network rectifier and the motor bridge. The motor bridge is controlled by a control circuit which feeds the motor bridge with control pulses to regulate the motor speed. The drive device further includes at least one drive prevention circuit connected between the control circuit and the motor bridge. The drive prevention circuit is configured to obtain a safety signal from an elevator safety circuit includes two separate safety input circuits each configured to be connected to the elevator safety circuit to receive a safety signal.Type: ApplicationFiled: June 6, 2018Publication date: October 4, 2018Applicant: KONE CorporationInventors: Pasi RAASSINA, Pekka HYTTI, Arto NAKARI, Ari KATTAINEN, Juhamatti NIKANDER, Olavi VAIRIO
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Publication number: 20180262146Abstract: 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: ApplicationFiled: February 20, 2018Publication date: September 13, 2018Applicant: KONE CorporationInventors: Pasi RAASSINA, Seppo SUUR-ASKOLA, Jussi LÄHTEENMÄKI, Marko MINKKINEN, Tuukka KORHONEN
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Publication number: 20180134519Abstract: A method and an elevator for moving an elevator car to a landing floor in case of a predefined event related to a main electrical power supply of an elevator are disclosed. The method includes charging energy from the main electrical power supply into an external electrical energy storage prior to detecting the predefined event related to the main electrical power supply, controlling an operation of an electric motor for moving the elevator car with an electrical drive to decelerate the elevator car and to produce regenerative electrical energy, selectively utilizing said energy charged from the main electrical power supply into the external electrical energy storage and said produced regenerative electrical energy to maintain an elevator brake in deactivated state.Type: ApplicationFiled: October 19, 2017Publication date: May 17, 2018Applicant: KONE CorporationInventors: Ari KATTAINEN, Pasi RAASSINA, Juhamatti NIKANDER, Ari-Pekka LAHTINEN, Pasi RINNESAARI, Pasi AHONEN
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Publication number: 20180090925Abstract: The invention relates to a motor drive comprising a rectifier bridge for connection with mains, a converter bridge configured to be connected with an elevator motor and an intermediate DC circuit in-between, whereby between a positive and a negative branch of the intermediate DC circuit at least one capacitor and/or battery is connected, whereby at the mains side of the rectifier bridge a controlled main relay with contacts is arranged, which are configured to connect or disconnect the rectifier bridge with the corresponding mains phase, characterized in that the motor drive comprises a charging circuit being connected between the mains and the rectifier bridge and/or intermediate DC circuit, which charging circuit comprises at least one charging switch connected in series with at least one current limiting component, and which motor drive comprises a voltage sensor connected between the positive and the negative branch of the intermediate DC circuit, which voltage sensor is connected to a fault evaluation cType: ApplicationFiled: July 7, 2017Publication date: March 29, 2018Applicant: Kone CorporationInventors: Pasi RAASSINA, Juhamatti NIKANDER, Pasi RINNESAARI, Ari-Pekka LAHTINEN, Arto NAKARI, Olli POKKINEN
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Publication number: 20180086606Abstract: The invention relates to a passenger conveyor, e.g. an elevator, comprising a conveyor motor being controlled by a conveyor control via a motor drive, the motor drive comprising a frequency converter with a rectifier bridge, an intermediate DC circuit and a converter bridge connected with the conveyor motor. The rectifier bridge is configured to be connected to mains via at least one relay, which relay is controlled by the conveyor control, the conveyor comprises a deep sleep mode, in which the frequency converter as well as at least a major part of conveyor control is switched off, in which conveyor the intermediate DC circuit forms the power supply for the conveyor control. During the activation of the deep sleep mode the conveyor control is configured to open the relay, whereby at least one signal circuit of the conveyor is configured to remain powered at least during the deep sleep mode.Type: ApplicationFiled: July 19, 2017Publication date: March 29, 2018Applicant: Kone CorporationInventors: Pasi RAASSINA, Risto JOKINEN, Olavi VAIRIO, Ari-Pekka LAHTINEN
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Patent number: 9873591Abstract: A brake controller, an elevator system and a method for performing an emergency stop are provided. The brake controller includes an input for connecting the brake controller to the DC intermediate circuit of the frequency converter driving the hoisting machine of the elevator, an output for connecting the brake controller to the electromagnet of the brake, a switch for supplying electric power from the DC intermediate circuit of the frequency converter driving the hoisting machine of the elevator via the output to the electromagnet of a brake, and also a processor with which the operation of the brake controller is controlled by producing control pulses in the control pole of the switch of the brake controller.Type: GrantFiled: November 5, 2014Date of Patent: January 23, 2018Assignee: KONE CORPORATIONInventors: Ari Kattainen, Pasi Raassina, Tapio Saarikoski, Lauri Stolt, Arto Nakari, Antti Kallioniemi
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Patent number: 9802790Abstract: A drive device of an elevator includes a DC bus, a motor bridge connected to the DC bus for the electricity supply of the elevator motor, a control circuit with which control circuit the operation of the motor bridge is controlled by producing control pulses in control poles of high-side and low-side switches of the motor bridge, a brake controller, which comprises a switch for supplying electric power to an electromagnetic brake, a brake control circuit, with which the operation of the brake controller is controlled, an input circuit for the safety signal to be disconnected/connected from outside the drive device, drive prevention logic and brake drop-out logic connected to the input circuit and configured to prevent the passage of control pulses to the control poles of the high-side and/or low-side switches when the safety signal is disconnected.Type: GrantFiled: November 4, 2014Date of Patent: October 31, 2017Assignee: KONE CORPORATIONInventors: Ari Kattainen, Pasi Raassina, Tapio Saarikoski, Lauri Stolt, Arto Nakari, Antti Kallioniemi
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Patent number: 9776829Abstract: The invention relates to a safety arrangement of an elevator, which includes sensors configured to indicate functions that are critical to the safety of the elevator, and also a safety circuit, with which the data formed by the sensors indicating the safety of the elevator is read. The safety arrangement includes a drive device including a control circuit of a motor bridge, an input circuit for a safety signal that can be disconnected/connected from outside the drive device, and also drive prevention logic, to prevent the passage of control pulses to the control poles of high-side and/or low-side switches of the motor bridge when the safety signal is disconnected. The safety circuit brings the elevator into a state preventing a run by disconnecting the safety signal and removes the state preventing a run by connecting the safety signal.Type: GrantFiled: November 5, 2014Date of Patent: October 3, 2017Assignee: KONE CORPORATIONInventors: Ari Kattainen, Pasi Raassina, Tapio Saarikoski, Lauri Stolt, Arto Nakari, Antti Kallioniemi
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Patent number: 9731904Abstract: The invention relates to an electronic safety device and a conveyor system comprising the same. The electronic safety device has a safety input for receiving a safety signal, the electronic safety device being configured to terminate its operation responsive to absence of the safety signal in the safety input. The electronic safety device comprises an operation-preventing circuit configured to detect an operational anomaly in the safety input, the operation-preventing circuit comprising a switch adapted to short the safety input when the operational anomaly is present in the safety input.Type: GrantFiled: December 7, 2015Date of Patent: August 15, 2017Assignee: Kone CorporationInventor: Pasi Raassina
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Patent number: 9723755Abstract: A drive unit for driving a motor has a component assembly including a main circuit board having a component side and a solder side, one or more main circuit conductors formed in at least one layer of the main circuit board, a power component module including one or more power components, the power component module having electrical connection terminals for connecting the power component(s) to the one or more main circuit conductors of the main circuit board and a cooling plate coupled to the power component(s) in a manner enabling transfer of heat from the power component(s) to the cooling plate. The power component module is mounted to the component side of the main circuit board. The component assembly further includes a heat sink mounted on the cooling plate and a fan mounted on the heat sink.Type: GrantFiled: September 25, 2015Date of Patent: August 1, 2017Assignee: KONE CORPORATIONInventor: Pasi Raassina
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Patent number: 9627981Abstract: Invention is related to a bidirectional switched mode power supply for elevator power systems. The bidirectional switched mode power supply comprises an input for selecting power supply direction of the bidirectional switched mode power supply and a switch having an control pole coupled to the input. The switch is adapted to change the main circuit of the bidirectional switched mode power supply based on the selected power supply direction.Type: GrantFiled: March 26, 2015Date of Patent: April 18, 2017Assignee: Kone CorporationInventors: Seppo Lappalainen, Tuomas Asikainen, Pasi Raassina
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Publication number: 20160214800Abstract: The invention relates to an electronic safety device and a conveyor system comprising the same. The electronic safety device has a safety input for receiving a safety signal, the electronic safety device being configured to terminate its operation responsive to absence of the safety signal in the safety input. The electronic safety device comprises an operation-preventing circuit configured to detect an operational anomaly in the safety input, the operation-preventing circuit comprising a switch adapted to short the safety input when the operational anomaly is present in the safety input.Type: ApplicationFiled: December 7, 2015Publication date: July 28, 2016Applicant: Kone CorporationInventor: Pasi RAASSINA
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Publication number: 20160120069Abstract: A drive unit for driving a motor has a component assembly including a main circuit board having a component side and a solder side, one or more main circuit conductors formed in at least one layer of the main circuit board, a power component module including one or more power components, the power component module having electrical connection terminals for connecting the power component(s) to the one or more main circuit conductors of the main circuit board and a cooling plate coupled to the power component(s) in a manner enabling transfer of heat from the power component(s) to the cooling plate. The power component module is mounted to the component side of the main circuit board. The component assembly further includes a heat sink mounted on the cooling plate and a fan mounted on the heat sink.Type: ApplicationFiled: September 25, 2015Publication date: April 28, 2016Applicant: KONE CorporationInventor: Pasi RAASSINA
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Publication number: 20150280583Abstract: Invention is related to a bidirectional switched mode power supply for elevator power systems. The bidirectional switched mode power supply comprises an input for selecting power supply direction of the bidirectional switched mode power supply and a switch having an control pole coupled to the input. The switch is adapted to change the main circuit of the bidirectional switched mode power supply based on the selected power supply direction.Type: ApplicationFiled: March 26, 2015Publication date: October 1, 2015Applicant: KONE CorporationInventors: Seppo LAPPALAINEN, Tuomas ASIKAINEN, Pasi RAASSINA
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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: 20150075917Abstract: A drive device of an elevator includes a DC bus, a motor bridge connected to the DC bus for the electricity supply of the elevator motor, which motor bridge includes high-side and low-side switches for supplying electric power from the DC bus to the elevator motor when driving with the elevator motor, and also from the elevator motor to the DC bus when braking with the elevator motor, a control circuit of the motor bridge, with which control circuit the operation of the motor bridge is controlled by producing control pulses in the control poles of the high-side and low-side switches of the motor bridge, a brake controller, which comprises a switch for supplying electric power to the control coil of an electromagnetic brake, a brake control circuit, with which the operation of the brake controller is controlled by producing control pulses in the control pole of the switch of the brake controller, an input circuit for the safety signal to be disconnected/connected from outside the drive device, drive preventionType: ApplicationFiled: November 4, 2014Publication date: March 19, 2015Applicant: KONE CORPORATIONInventors: Ari KATTAINEN, Pasi RAASSINA, Tapio SAARIKOSKI, Lauri STOLT, Arto NAKARI, Antti KALLIONIEMI
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Publication number: 20150053507Abstract: A brake controller, an elevator system and a method for performing an emergency stop are provided. The brake controller includes an input for connecting the brake controller to the DC intermediate circuit of the frequency converter driving the hoisting machine of the elevator, an output for connecting the brake controller to the electromagnet of the brake, a switch for supplying electric power from the DC intermediate circuit of the frequency converter driving the hoisting machine of the elevator via the output to the electromagnet of a brake, and also a processor with which the operation of the brake controller is controlled by producing control pulses in the control pole of the switch of the brake controller.Type: ApplicationFiled: November 5, 2014Publication date: February 26, 2015Applicant: KONE CORPORATIONInventors: Ari Kattainen, Pasi Raassina, Tapio Saarikoski, Lauri Stolt, Arto Nakari, Antti Kallioniemi
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Publication number: 20150053508Abstract: A safety arrangement of an elevator, which includes sensors configured to indicate functions that are critical from the viewpoint of the safety of the elevator, and also a safety circuit, with which the data formed by the sensors indicating the safety of the elevator is read. The safety arrangement includes a drive device for driving the hoisting machine of the elevator. The drive device includes a DC bus, and also a motor bridge connected to the DC bus for the electricity supply of the elevator motor. The motor bridge includes high-side and low-side switches for supplying electric power from the DC bus to the elevator motor when driving with the elevator motor, and also from the elevator motor to the DC bus when braking with the elevator motor.Type: ApplicationFiled: November 5, 2014Publication date: February 26, 2015Applicant: KONE CorporationInventors: Ari Kattainen, Pasi Raassina, Tapio Saarikoski, Lauri Stolt, Arto Nakari, Antti Kallioniemi