Control Actuates Mechanical Braking Means For Power Source Patents (Class 187/288)
  • Patent number: 10781074
    Abstract: A monitoring device for an elevator system is used with an assembly device for assembling a shaft retrofit and a method for monitoring an assembly platform. The monitoring device monitors movements of an elevator car and includes a sensor system for detecting a movement variable and at least one analysis device that evaluates the detected movement variable and compares it to a threshold. If the threshold is exceeded, a signal output is triggered to actuate a brake/catching device. The monitoring device selects the threshold from specified thresholds based on a state of the monitoring device. The specified thresholds include at least one normal operation threshold, and the monitoring device indicates a normal state as soon as specified connection elements are connected to it. The monitoring device further contains a checking routine for determining a state of the monitoring device, and selects the threshold from specified thresholds based on the state.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: September 22, 2020
    Assignee: INVENTIO AG
    Inventors: David Michel, Simon Zingg, Michael Geisshüsler
  • Patent number: 10737905
    Abstract: A braking arrangement for an elevator arrangement includes a speed sensor arrangement for generating an over-speed signal of a moving component of the elevator arrangement, a hydraulic brake arrangement for generating a braking action of the moving component upon application of a hydraulic pressure and an actuator arrangement for generating and applying the hydraulic pressure to the hydraulic brake arrangement. The braking arrangement includes a control connected to the speed sensor arrangement and in response to the over-speed signal initiating an ABS braking process by controlling the actuator arrangement to repeatedly increase and decrease the hydraulic pressure to the hydraulic brake arrangement with a repetition time interval that is successively extended during the ABS braking process. The braking arrangement enables safe and reliable deceleration of the moving component, such as a car or a counterweight, while avoiding an excessive jerk by smoothly increasing the braking action.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: August 11, 2020
    Assignee: INVENTIO AG
    Inventors: Vishal Bhosale, Shreyas Naikade
  • Patent number: 10723586
    Abstract: A method for driving an elevator car brake device, an elevator system for executing the method, and a computer program implementing the method involve the brake device including at least one automatically releasable pressure element effecting a braking action and an electromagnet automatically releasing the pressure element, wherein a respectively required braking torque of the car is ascertained using a model of the elevator system, a direction of car travel, a state of load of the car and a desired car deceleration. A drive signal for driving the electromagnet is generated based on the braking torque and is supplied to the electromagnet, wherein, when the car is braked, an actual car deceleration is ascertained and calibration is performed based on the ascertained actual car deceleration, specifically calibration of the ascertained required braking torque or calibration of the drive signal that is generated based on the ascertained required braking torque.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: July 28, 2020
    Assignee: INVENTIO AG
    Inventors: Christian Studer, Andrea Cambruzzi
  • Patent number: 10703607
    Abstract: A method for operating an elevator system with a car that moves in an elevator shaft may involve detecting an operating parameter related to a change in loading of the car, ascertaining whether a position of the car relative to a stopping floor needs to be adjusted based on the operating parameter, determining times at which the car is to be stopped and at which the adjustment is to be performed, stopping the car and blocking a flow of energy of a drive of the car and/or activating a service brake as the car is being stopped and/or while the car is stopped, and adjusting the position of the car if necessary. Further, whether the adjustment is necessary may be ascertained before the car is stopped.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: July 7, 2020
    Assignees: THYSSENKRUPP ELEVATOR AG, THYSSENKRUPP AG
    Inventor: Bernd Altenburger
  • Patent number: 10703604
    Abstract: An elevator system includes a control unit, a bus, a plurality of bus-nodes connected via the bus with the control unit, and a plurality of safety-state detection devices connected with the control unit via the bus-nodes. A method of commissioning the elevator system includes the steps: A) verification by the control unit of the safety-state detection means that are connected to the bus; B) checking of the functional capability of the safety-state detection means that are connected; C) checking by the control unit of the safety functions of the elevator system based on a change in state of a safety-state detection means; and D) release of the elevator system for a normal operation only after positive execution by the control unit of the steps A) to C), wherein the release is accompanied by a change in state of the control unit from an unsecured state into a secured state.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: July 7, 2020
    Assignee: INVENTIO AG
    Inventors: Astrid Sonnenmoser, Ivo Lustenberger, Martin Hess
  • Patent number: 10676316
    Abstract: A method for dynamically adjusting a levelling speed limit of an elevator car during a levelling operation includes obtaining an indication that the elevator car is detected to arrive to a zone; obtaining at least one value indicating the speed of the elevator car, in response to detecting that the elevator car arrives to the zone; and dynamically adjusting the levelling speed limit of the elevator car based on the speed of the elevator car. An elevator control unit and a system are provided to perform at least partly the method.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: June 9, 2020
    Assignee: KONE CORPORATION
    Inventors: Juha-Matti Aitamurto, Antti Hovi, Ari Jussila, Ari Kattainen
  • Patent number: 10680538
    Abstract: A system includes a converter operatively connected to an alternating current (AC) power source and a direct current (DC) bus, an inverter operatively connected to a motor and the DC bus, and a controller. The converter includes a first plurality of switching devices in selective communication with each phase of the AC power source and the DC bus. The inverter includes a second plurality of switching devices in selective communication with each phase of the motor and the DC bus. The controller is operable to command dropping of a brake through a passive delay circuit responsive to an emergency stop condition for a load driven by the motor and reduce a voltage on the DC bus by dropping at least one phase of the AC power source and/or using a dynamic braking resistor prior to the brake physically dropping.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: June 9, 2020
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Prasanna Nagarajan, Shashank Krishnamurthy, Konda Reddy Chevva
  • Patent number: 10648524
    Abstract: In a brake device configured to perform braking and releasing of a disc by moving a rod having a lining at a leading end of the rod by a spring device, a cylinder tube of a pressure control unit is arranged adjacent to a pressure storage unit configured to store a compressed fluid. When the disc is to be released, a pressure-receiving piston is moved to a releasing position. When the disc is to be braked, the pressure-receiving piston is returned to braking position.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: May 12, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Maya Irie, Yoshiko Ono
  • Patent number: 10626655
    Abstract: A braking device for a movable door leaf comprises an electric motor operated as a generator, whose shaft is rotatable through a movement of the door leaf and at whose terminals a movement-dependent motor voltage is created and a brake circuit to which the motor voltage is applied or could be applied and which can be short-circuited via the motor terminals to dampen movement of the door leaf. In addition, the braking device comprises an emergency brake circuit to which the motor voltage is applied or applicable and via which the motor terminals can be short-circuited to dampen a movement of the door leaf. In doing so, means are provided which are designed to detect the presence of a malfunction of the brake circuit and to short-circuit the motor terminals via the emergency brake circuit when the presence of a malfunction of the brake circuit is detected.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: April 21, 2020
    Assignee: Geze GmbH
    Inventor: Matthias Hucker
  • Patent number: 10502788
    Abstract: A circuit for driving a 3-phase motor including: an inverter circuit configured to drive a 3-phase motor; a power supply configured to supply an inverter driving voltage and an inverter fault detection voltage to the inverter circuit; and a controller configured to select a voltage supplied by the power supply to the inverter circuit, depending on whether the 3-phase motor is driven. The controller then determines a fault state of the inverter circuit by periodically detecting voltage levels of designated nodes of the inverter circuit.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: December 10, 2019
    Assignee: Hyundai Mobis Co., Ltd.
    Inventor: Jaehyun Park
  • Patent number: 10494226
    Abstract: This invention is directed to a self-propelled elevator system having multiple motors or one motor, and methods for synchronizing said multiple motors. This invention is also directed to an elevator brake system to be used in said self-propelled elevator system or other types of elevators to increase their level of safety.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: December 3, 2019
    Inventor: Kenny Wai Keung Lau
  • Patent number: 10479645
    Abstract: A brake system for an elevator car includes a multiple of brake segments to control a timing and a rate of brake torque for deceleration of the elevator car, a first of the multiple of brake segments includes a first electromagnetic coil with a characteristic different than a second electromagnetic coil of a second of the multiple of brake segments.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: November 19, 2019
    Assignee: Otis Elevator Company
    Inventors: Amir Lotfi, David J. Lanesey
  • Patent number: 10450162
    Abstract: A brake system for an elevator car includes a multiple of brake segments for deceleration of the elevator car and a brake control circuit operable to control operation of each of the multiple of brake segments to passively sequence activation of each of the multiple of brake segments.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: October 22, 2019
    Assignee: Otis Elevator Company
    Inventors: Amir Lotfi, YiSug Kwon, Steven M. Millett
  • Patent number: 10442659
    Abstract: A brake for an elevator car includes a multiple of sequentially operated brake segments to control a timing and a rate of brake torque for deceleration of the elevator car.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: October 15, 2019
    Assignee: Otis Elevator Company
    Inventors: Amir Lotfi, Bruce P Swaybill, James L Hubbard
  • Patent number: 10273116
    Abstract: An elevator rescue system allows an elevator car of an elevator to be moved in an emergency situation. The elevator includes an elevator motor acting on hoisting ropes by which the elevator car is suspended including at least one electro-mechanical brake and an encoder outputting a signal corresponding to its speed. The rescue system includes a back-up power source, a jerk monitoring circuit connected to the encoder and including a memory storing an upper threshold value for the derivative of car acceleration, a brake feed circuit controlled by the jerk monitoring circuit, and a release switch connected to the jerk monitoring circuit and/or to the brake feed circuit.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: April 30, 2019
    Assignee: KONE CORPORATION
    Inventors: Ari Kattainen, Arto Nakari
  • Patent number: 10227210
    Abstract: This invention is directed to a self-propelled elevator system having multiple motors or one motor, and methods for synchronizing said multiple motors. This invention is also directed to an elevator brake system to be used in said self-propelled elevator system or other types of elevators to increase their level of safety.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: March 12, 2019
    Inventor: Kenny Wai Keung Lau
  • Patent number: 10106373
    Abstract: A brake controller including a DC link for supplying power, the DC link including a positive DC link rail and a negative DC link rail; output terminals for connecting to a magnetizing coil of an electromagnetic brake; a current path established between the DC link and the output terminals for conducting DC link power to the magnetizing coil; and two solid-state switches fitted into the current to adjust output terminal voltage by modulating the DC link voltage.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: October 23, 2018
    Assignee: KONE CORPORATION
    Inventor: Arto Nakari
  • 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
  • Patent number: 10035680
    Abstract: An elevator safety circuit includes a plurality of relays; safety logic for monitoring status of the plurality of relays, the safety logic generating an output signal in response to the status of the plurality of relays; and a processor controlling operation of an elevator drive in response to the output signal; wherein at least one of the relays is a forced guided relay and at least one of the relays is other than a forced guided relay.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: July 31, 2018
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Jochen Thomas Richter, Hebert Horbrügger, Richard F. Magda, Marvin Dehmlow
  • Patent number: 9975733
    Abstract: One or more hydraulically-powered braking assemblies mounted on the cross-rail or safety plank of a traction-type or hydraulic-type elevator car, and designed to selectively brake on a guide rail of the elevator car upon detection of a safety condition.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: May 22, 2018
    Inventors: Kevin Cunningham, Timothy Toan
  • Patent number: 9974497
    Abstract: A brake apparatus provided on a body of a medical apparatus, the brake apparatus including: a rail unit; a lever unit configured to rotate with respect to a rotational shaft; an elastic member provided on the lever unit at a first end of the lever unit and configured to provide an elastic force to rotate the lever unit; a wedge provided on a second end opposite to the first end of the lever unit, configured to be inserted into the rail unit according to rotation of the lever unit and configured to apply braking pressure on the rail unit.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: May 22, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Pil Yong Oh, Eun Hye Seo
  • Patent number: 9873591
    Abstract: 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: Grant
    Filed: November 5, 2014
    Date of Patent: January 23, 2018
    Assignee: KONE CORPORATION
    Inventors: Ari Kattainen, Pasi Raassina, Tapio Saarikoski, Lauri Stolt, Arto Nakari, Antti Kallioniemi
  • Patent number: 9859821
    Abstract: A motor control apparatus includes: a rectifier converting AC power into DC power; a smoothing capacitor provided for a DC link; an inverter connected to the DC link and mutually converts power between DC power and AC power; an AC voltage detector detecting voltage of a power supply; a voltage amplitude calculator converting the AC voltage value into a power supply voltage amplitude value; a power failure detector detecting a state of power failure when the power supply voltage amplitude value has continued to be equal to or lower than a first threshold for a predetermined period; a DC voltage detector detecting the DC voltage of the smoothing capacitor; and, a protecting operation start determining unit notifying the inverter of the actuation of axis stoppage or axis retraction when a power failure is detected and when the DC voltage value is equal to or lower than a second threshold.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: January 2, 2018
    Assignee: FANUC CORPORATION
    Inventor: Kenta Yamamoto
  • Patent number: 9776829
    Abstract: 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: Grant
    Filed: November 5, 2014
    Date of Patent: October 3, 2017
    Assignee: KONE CORPORATION
    Inventors: Ari Kattainen, Pasi Raassina, Tapio Saarikoski, Lauri Stolt, Arto Nakari, Antti Kallioniemi
  • Patent number: 9771243
    Abstract: A method and a safety arrangement are provided for monitoring the movement of an elevator component, more particularly of an elevator car or of the automatic door of an elevator. In the method, a setup drive of an elevator component is run, and the speed and/or acceleration of the elevator component is measured during the setup drive, a threshold value for the speed and/or acceleration of the elevator component is formed on the basis of the measuring data obtained in the setup drive, the speed and/or acceleration of the elevator component is measured, and if the measured speed and/or acceleration exceeds the aforementioned threshold value, a monitoring signal for bringing the elevator to a safe state is formed.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: September 26, 2017
    Assignee: KONE CORPORATION
    Inventors: Ari Kattainen, Antti Hovi
  • Patent number: 9764926
    Abstract: A brake assembly for an elevator includes a brake, a brake operating device and a first brake wire connected to the brake operating device and to the brake, the brake operating device being configured to release the brake by moving the brake operating device and the first brake wire to a first direction. A second brake wire is connected to the brake operating device and to the brake, and the brake operating device is configured to engage the brake by moving the brake operating device and the second brake wire to a second direction.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: September 19, 2017
    Assignee: KONE CORPORATION
    Inventors: Antti Saarelainen, Seppo Valliovuo, Perttu Luukkonen
  • Patent number: 9676591
    Abstract: In an elevator apparatus, a reference position switch is a usually closed switched that is opened by a car moving to a reference position. A detected body is installed inside a hoistway. A detected body detector that detects the detected body is disposed on the car. A car position detecting portion stores as detected position information of the detected body an amount of movement of the car from where the detected body is detected until the car is detected by the reference position switch by a learning run that is implemented in advance. After completion of the learning run, the car position detecting portion detects the car position based on information from the detected body detector, the stored detected position information, and information from a movement detector that outputs a signal that corresponds to an amount of movement of the car.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: June 13, 2017
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hirokazu Banno, Takuo Kugiya, Yasushi Otsuka
  • Patent number: 9637349
    Abstract: An example elevator brake includes a first braking member that is biased by a first spring member into engagement with a braking surface. The first braking member includes a first armature arranged to be actuated by an electromagnetic actuator to disengage the first braking member from the braking surface against the biasing force of the first spring member. A second braking member is biased by a second spring member into engagement with a braking surface. The second braking member includes a second armature arranged to be actuated by an electromagnetic actuator to disengage the second braking member against the biasing force of the second spring member. A first electromagnetic actuator actuates the first armature and a second electromagnetic actuator actuates the second armature.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: May 2, 2017
    Assignee: Otis Elevator Company
    Inventors: Helmut Lothar Schroeder-Brumloop, Pascal Rebillard, Gerard Sirigu, Olivier Stanislas Dukacz, Ralph S. Stripling, Juan Antonio Illan, Jose Sevilleja-Perez, Juan Martin
  • Patent number: 9604818
    Abstract: An elevator system and a method for monitoring the operating condition of an elevator system are provided. In the method, samples are taken of the control signal of the drive device of the elevator, from the series of samples taken a frequency component is determined that is characteristic to the part of the elevator assembly driven with the drive device, and also the operating condition of the part of the elevator assembly is monitored on the basis of the determined frequency component.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: March 28, 2017
    Assignee: KONE CORPORATION
    Inventors: Antti Kallioniemi, Tuukka Kauppinen
  • Patent number: 9457987
    Abstract: An elevator system including a braking system, and a method of retrofitting an elevator for such braking system is disclosed. The braking system may comprise a first brake having a first magnetic brake coil, the first brake movable between a disengaged and an engaged position, a second brake having a second magnetic brake coil, the second brake movable between a disengaged and an engaged position, and a brake control device having a brake power source. The brake control device may be electrically connected to the first and second brakes and may be configured to selectively delay or sequence the movement of the first brake and the second brake to the engaged position with residual current from the brake coils.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: October 4, 2016
    Assignee: OTIS ELEVATOR COMPANY
    Inventor: Joseph L. Della Porta
  • Patent number: 9340393
    Abstract: Disclosed is a method for measuring opening and closing delay time of elevator brake, the method including outputting, by a brake signal output unit, a brake signal, receiving, by a brake signal checking unit, the brake signal and determining whether the brake signal is an opening signal or a closing signal to output an opening/closing determination signal, receiving, by a brake counter unit, the opening/closing determination signal, and starting a count for measuring a brake opening time or a brake closing time to accumulate and output counted value, determining, by a motor drive checking unit, whether a motor configured to drive an elevator is driven upon receipt of the counted values and outputting a drive determination signal, and receiving, by a brake opening/closing delay computation unit, the drive determination signal and the counted value to compute a brake opening/closing delay time.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: May 17, 2016
    Assignee: LSIS CO., LTD.
    Inventor: Min Hun Chi
  • Patent number: 9309091
    Abstract: An elevator installation includes a car, a counterweight and safeties which are fitted to the car and the counterweight. The car contains an electrically controlled device for actuating and optionally resetting the safety and the counterweight also contains an electrically controlled device with a safety, or the safety of the counterweight is actuated by a slack-line release.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: April 12, 2016
    Assignee: Inventio AG
    Inventor: Josef Husmann
  • Patent number: 9224546
    Abstract: A diode includes an anode connected to the other ends of brake coils, and a cathode connected to one end of a smoothing capacitor. A diode includes an anode connected to the other end of the smoothing capacitor, and a cathode connected to one ends of the brake coils. By providing the diodes, energy stored in the brake coils, when at least one of an NPN type transistor and an NPN type transistor is in an on-state, is returned to the smoothing capacitor when the NPN type transistors are in an off-states.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: December 29, 2015
    Assignee: FANUC CORPORATION
    Inventors: Yasuyuki Matsumoto, Naoyuki Suzuki
  • Patent number: 9126804
    Abstract: A method for triggering an elevator brake in an emergency situation of a vertically movable elevator car in an elevator installation, wherein a movable part of the brake is held in a starting position by an electromagnetic force generated by a coil connected with a voltage source, and for triggering the brake the voltage supplied to the coil is interrupted and the movable part is moved from the starting position to a braking position by a spring force of at least one spring. A voltage is set by a switching unit that is connected with a control unit in dependence on at least one travel parameter of the elevator car determined by the control unit and, in the case of failure of the voltage source, triggering of the elevator brake is delayed by a delay unit in dependence on the set voltage.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: September 8, 2015
    Assignee: Inventio AG
    Inventor: Heinz Widmer
  • Publication number: 20150136530
    Abstract: An ABS brake control circuit of an elevator brake system comprises a brake controller, a backup power supply, a manual rescue instruction circuit, a power grid power-off instruction circuit, a system failure instruction circuit, a signal identification circuit and a brake mode switching circuit. when transport equipments, such as an elevator, an escalator, and so on, encounters a system failure or power grid power-off or needs an emergency rescue, the ABS brake control circuit can allow the transport equipment to transition to a safe brake stop through a previous safe deceleration, thereby eliminating a significant security risk caused by a halt resulted from one-step brake which exists in an elevator brake system, and being capable of ensuring that the manual brake releasing will not cause the phenomena of a stalling of an elevator car and a brake failure of a brake, such that the brake safety of the transport equipments such as an elevator, an escalator, a moving walkway and the like is increased.
    Type: Application
    Filed: January 27, 2015
    Publication date: May 21, 2015
    Inventors: Zhenpu RUI, Wulin HAN
  • Publication number: 20150075917
    Abstract: 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 prevention
    Type: Application
    Filed: November 4, 2014
    Publication date: March 19, 2015
    Applicant: KONE CORPORATION
    Inventors: Ari KATTAINEN, Pasi RAASSINA, Tapio SAARIKOSKI, Lauri STOLT, Arto NAKARI, Antti KALLIONIEMI
  • Publication number: 20150053508
    Abstract: 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: Application
    Filed: November 5, 2014
    Publication date: February 26, 2015
    Applicant: KONE Corporation
    Inventors: Ari Kattainen, Pasi Raassina, Tapio Saarikoski, Lauri Stolt, Arto Nakari, Antti Kallioniemi
  • Publication number: 20150053507
    Abstract: 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: Application
    Filed: November 5, 2014
    Publication date: February 26, 2015
    Applicant: KONE CORPORATION
    Inventors: Ari Kattainen, Pasi Raassina, Tapio Saarikoski, Lauri Stolt, Arto Nakari, Antti Kallioniemi
  • Patent number: 8941338
    Abstract: An electric braking device for printing material processing machines includes at least one electric drive to be braked that is supplied by a power converter in motor operation and is braked by the power converter in generator operation. A control unit switches on a redundant electric braking device in the case of a failure of the power converter by using a switch. The braking device has at least two braking stages, an additional switch for actuation in at least two stages, and at least one brake resistor. In the circuit of the redundant electric braking device, a braking current is measured and the measured value is fed to a comparator for comparing the actual braking current to a desired braking current. A printing press having the braking device is also provided.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: January 27, 2015
    Assignee: Heidlelberger Druckmaschinen AG
    Inventors: Reiner Villhauer, Klaus-Dieter Kleibaumhueter, Josef Reiter, Andreas Schulz
  • Publication number: 20140332322
    Abstract: The invention relates to an elevator system and also to a method for monitoring the movement an elevator car. In the method a first emergency braking procedure is activated for braking the elevator car at a first deceleration if the speed of the elevator car exceeds the first limit value for permitted speed, and also a second emergency braking procedure is further activated for braking the elevator car at a second deceleration that is greater than the first, if the speed of the elevator car exceeds the second limit value for permitted speed that is greater than the first limit value for permitted speed.
    Type: Application
    Filed: June 13, 2014
    Publication date: November 13, 2014
    Applicant: KONE CORPORATION
    Inventors: Ari HARKONEN, Petteri VALJUS
  • Patent number: 8869945
    Abstract: The invention relates to a safety arrangement of an elevator system and to a method for ensuring safety in an elevator system. The safety arrangement comprises at least one mechanical stopping appliance and the control of the safety arrangement comprises at least one limit value that sets the speed, deceleration or permitted vertical distance from the door zone of the elevator car. In the method for ensuring safety in an elevator system at least one mechanical stopping appliance is fitted to the safety arrangement of the elevator system and at least one limit value that sets the speed, deceleration or permitted vertical distance from the door zone of the elevator car is set for the control of the safety arrangement.
    Type: Grant
    Filed: February 17, 2009
    Date of Patent: October 28, 2014
    Assignee: Kone Corporation
    Inventors: Ari Härkönen, Sakari Korvenranta, Ari Kattainen, Timo Syrman, Hannu Ahrnberg, Risto Jokinen
  • Patent number: 8820484
    Abstract: Circuits and methods for controlling an elevator braking system are provided. A circuit for controlling an elevator braking system includes a contracting brake signal generating circuit, wherein a door lock relay DJ and a contracting brake contractor ZJ are series connected; a contracting brake signal processing circuit, for converting between high and low level to trigger a braking controller; and an isolation control switch CK jointly connected in the contracting brake signal generating circuit and the contracting brake signal processing circuit.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: September 2, 2014
    Assignee: Shijiazhuang Wulon Brake Co., Ltd
    Inventor: Zhenpu Rui
  • Publication number: 20140231181
    Abstract: An exemplary elevator brake control device includes a relay switch that is associated with a safety chain configured to monitor at least one condition of a selected elevator system component. The relay switch is selectively closed to allow power supply to an electrically activated elevator brake component responsive to the monitored condition having a first status. The relay switch is selectively opened to prevent power supply to the brake component responsive to the monitored condition having a second, different status. A solid state switch is in series with the relay switch between the relay switch and the brake component. A driver selectively controls the solid state switch to selectively allow power to be supplied to the brake component only if the relay switch is closed and the monitored condition has the first status.
    Type: Application
    Filed: October 6, 2011
    Publication date: August 21, 2014
    Applicant: Otis Elevator Company
    Inventor: Kyle W. Rogers
  • Patent number: 8752677
    Abstract: The invention relates to an elevator system and also to a method for monitoring the movement an elevator car. In the method a first emergency braking procedure is activated for braking the elevator car at a first deceleration if the speed of the elevator car exceeds the first limit value for permitted speed, and also a second emergency braking procedure is further activated for braking the elevator car at a second deceleration that is greater than the first, if the speed of the elevator car exceeds the second limit value for permitted speed that is greater than the first limit value for permitted speed.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: June 17, 2014
    Assignee: Kone Corporation
    Inventors: Ari Harkonen, Petteri Valjus
  • Patent number: 8746413
    Abstract: A control arrangement (100) for an elevator brake, comprises a control circuit (110) adapted to generate, according to a demand for releasing a first braking member of the elevator brake, a first actuating signal and to generate, according to a demand for releasing a second braking member of the elevator brake, a second actuating signal; a first terminal (112) for outputting the first actuating signal to a first electromagnetic actuating means (26) of the elevator brake, a second terminal for outputting the second actuating signal to a second electromagnetic actuating means (30) of the elevator brake; the control arrangement (100) being adapted to allow at least the following modes of operation: A) a normal operation mode in which the first and the second actuating signals are supplied synchronously to the first and second electromagnetic actuation means (26, 30), respectively, and B) a single braking member test operation mode, in which one of the first and second actuating signals is supplied to the respect
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: June 10, 2014
    Assignee: Otis Elevator Company
    Inventors: Helmut Lothar Schroeder-Brumloop, Pascal Rebillard, Gerard Sirigu, Olivier Stanislas Dukacz, Ralph S. Stripling, Juan Antonio Illan, Jose Sevilleja-Perez, Juan Martin
  • 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
  • Patent number: 8714312
    Abstract: The elevator safety rescue system is an electro-hydraulic system particularly suited for use in rack and pinion drive elevators installed with tall towers, mines, smoke stacks, and other structures having relatively large elevations or depths. The system includes a positive displacement hydraulic pump driven by the output shaft of an electric elevator drive motor. An electro-hydraulic valve is electrically powered to maintain an open condition to allow unrestricted hydraulic flow through the pump during normal operation. In the event of an elevator malfunction, electrical power is terminated to the valve, causing the valve to close and thus requiring all hydraulic fluid to pass through a restrictor. The restrictor limits the flow of hydraulic fluid through the hydraulic pump, thus limiting its rotational speed and rotational speed of the elevator drive motor to which it is attached, thereby allowing the elevator to descend or climb (with counterweight) at a safe speed.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: May 6, 2014
    Inventors: James L. Tiner, Todd C. Grovatt
  • Patent number: 8700191
    Abstract: Methods and systems provide for the controlled application of forces to a structure during leveling and securing procedures. According to embodiments described herein, a force distribution system includes a number of force application devices that are communicatively linked to a computing system. The computing system controls the force application devices to apply calculated forces to the structure, monitor the forces, and adjust the forces when deviations occur. According to one embodiment, the force application devices include jack assemblies and the system is operative to level a structure and maintain the level position when the structure shifts. According to another embodiment, the force application devices include clamp assemblies and the system is operative to apply and maintain a constant and uniform pressure on a structure to secure the structure during machining. Other embodiments include using force application devices to secure a structure during transport.
    Type: Grant
    Filed: November 26, 2007
    Date of Patent: April 15, 2014
    Assignee: The Boeing Company
    Inventors: Bobby Joe Marsh, Kinson D. VanScotter
  • Publication number: 20140020985
    Abstract: A method for monitoring a brake which is operated by a spring force and a device for monitoring the force, comprising the steps of taking into account a force which is required to load or bias at least one spring by means of the device for monitoring the force.
    Type: Application
    Filed: January 3, 2013
    Publication date: January 23, 2014
    Applicant: ThysseKrupp Elevator AG
    Inventors: Olaf BREIDENSTEIN, Jochen Schulze, Eberhard Vogler, Andreas Wilhelm, Torsten Gessner, Gunther Hermann, Markus Jetter, Nils-Anton Mollgaard, Uwe Resag
  • Patent number: 8602170
    Abstract: An elevator drive for driving and holding an elevator car includes a traction wheel providing a driving and a holding force to the elevator car, a motor driving the traction wheel, a braking arrangement for holding the traction wheel, and a drive shaft connecting the traction wheel, the motor and the braking arrangement together. The braking arrangement includes at least two braking devices arranged, on opposite sides of the traction wheel on the drive shaft. A monitoring logic system ascertains whether an activated one of the braking devices alone can maintain the elevator car at standstill during a brief time the other of the one of the braking devices is released for issuing fault information to an elevator control.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: December 10, 2013
    Assignee: Inventio AG
    Inventor: Daniel Fischer