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| Number | Title | Issue Date |
| 8162110 | Rope tension equalizer and load monitor An apparatus for automatically equalizing the uneven tension between ropes of an elevator in combination with a load cell to determine elevator load. The load of an elevator car having multiple tension members is automatically balanced while load is measured using a... | 04/24/2012 |
| 8123002 | Elevator rope positioning apparatus A system and method for minimizing compensation rope sway by altering the natural frequency of compensation ropes using servo actuators. The rope sway may be minimized by moving the compensation sheave to adjust the tension of the compensation rope or adjusting the ... | 02/28/2012 |
| 8069958 | Elevator system and method including a controller and remote elevator monitor for remotely performed and/or assisted restoration of elevator service An elevator (49) includes remote elevator monitoring equipment (50) (REM) connected by a communication linkage (52) to a central elevator monitoring and control station (51). Main, drive, and door controllers (56-58) are int... | 12/06/2011 |
| 8016081 | Elevator drive brake device monitor An elevator drive with a brake device has compression springs that act on brake levers, whereby brake linings generate a brake force on a brake drum. The more the brake linings wear due to abrasion, the smaller the distance of the plunger from the brake magnet housi... | 09/13/2011 |
| 8011481 | Method for monitoring operating states of an elevator unit by sensing movable brake part A method for monitoring the operating state of an elevator drive having a brake includes the mounting of a sensor on a movable brake part. The sensor generates an output proportional to the extent of relative movement between the brake part upon which it is mounted ... | 09/06/2011 |
| 8011479 | Electrical signal application strategies for monitoring a condition of an elevator load bearing member An elevator load bearing member (30) monitoring device includes a controller (42) that applies a selected electrical signal to tension members (32) of the load bearing member (30). In one example, connectors (40) are associated wit... | 09/06/2011 |
| 8011480 | Load sensor apparatus and method for an elevator car An elevator installation and a method for arranging a load sensor in the elevator installation includes a car, a support device for supporting the car, the load sensor and a deflecting roller unit. The deflecting roller unit is arranged at the car and has at least t... | 09/06/2011 |
| 8006808 | Managing an encoder malfunction in an elevator drive system An encoder failure in an elevator drive system is detected and managed. A velocity of the elevator drive system is provided by an encoder signal (60) and compared with a minimum velocity threshold (62). An encoder fault timer is incremented when the ve... | 08/30/2011 |
| 7992689 | Movement control of an elevator system using position deviation to determine loading state A determination of the loading state of an elevator system and also a method for determining the loading state of an elevator system is described. The elevator system includes an elevator car and also a motor drive for moving the elevator car. The loading state of t... | 08/09/2011 |
| 7967113 | Elevator system to minimize entrapment of passengers during a power failure The invention provides a system and method for handling power outages in a multiple car elevator system in a building having a plurality of floors. The system includes an energy calculator connected to the elevators, and determines a total energy of the elevator sys... | 06/28/2011 |
| 7954607 | Method and arrangement for monitoring the safety of a transport system The invention relates to a method and an appliance for monitoring the safety of a transport system. The transport system includes a transport appliance and also a synchronous motor for moving the transport appliance. In the method, the motion information of the tran... | 06/07/2011 |
| 7946393 | Safety evaluation and control system for elevator units The invention relates to an elevator unit including an elevator car which is movable in an elevator shaft and is equipped with a braking device and a catching device encompassing catching elements. The elevator unit further includes a system for detecting signals us... | 05/24/2011 |
| 7926622 | Lift cable slack monitoring device and method A lift drive unit has at least one monitoring device for monitoring unallowed raising of a lift cage. The drive unit has a motor unit and a deflecting unit. If a counterweight supported by the deflecting unit, for example rests on a shaft pit buffer, the deflecting ... | 04/19/2011 |
| 7909144 | Car oscillation detecting device for elevator using a set value to judge car oscillation Since the elevator type is varied, a set value used for judging car oscillation must be set for each elevator, which requires much time and labor. Also, if the criteria of all elevators are represented by one set value to eliminate the time and labor required for th... | 03/22/2011 |
| 7909145 | Brake device for an elevator with monitoring capabilities An elevator drive has a brake device with compression springs to actuate brake levers, and brake linings on a brake drum creating a braking force. A sensor is provided to detect the movement of a brake magnet armature tappet. A bracket is attached to the brake magne... | 03/22/2011 |
| 7866446 | Method and device for reducing the energy consumption of an elevator installation A device for reducing the energy consumption is used in an elevator installation which can be alternatively brought into an operating mode and a standby mode wherein in the standby mode the elevator installation is separated from a main energy source and connected w... | 01/11/2011 |
| 7823706 | Condition monitoring system The present invention relates to an elevator condition monitoring system, which comprises at least a control unit (104) and a sensor arrangement (250) connected to the control unit, while the elevator comprises an elevator car (100), an elevator... | 11/02/2010 |
| 7823705 | Elevator apparatus control by measuring changes in a physical quantity other than temperature An elevator apparatus is equipped with an elevator component that is operated during operation of an elevator, a detector for measuring a change in a physical quantity other than temperature as to the elevator component, and a control device for controlling the oper... | 11/02/2010 |
| 7789204 | Remote informing system for elevator A remote alarming system for an elevator includes: an elevator control device; a wireless alarming device provided independently of the elevator control device, for transmitting failure information of an elevator from the elevator control device through wireless com... | 09/07/2010 |
| 7784590 | Elevator operation control device In a control operation performed at time of an earthquake or strong wind, when a running elevator is stopped at a nearest floor, the natural frequency of the transverse vibration of a rope is prevented from resonating with the natural frequency of the building, and ... | 08/31/2010 |
| 7784589 | Elevator lift cage load measuring assembly Load measuring equipment has a small-area load sensor arranged between a support and a first damping body for vibration damping of parts relative to the support. The support may be a bracket and the parts may be a lift drive engine. The force on the sensor, which ma... | 08/31/2010 |
| 7775330 | Unintended movement governor An electronic unintended movement governor is disclosed, which includes an input for car position data, a device for determining the speed of the elevator car, a plurality of limit values for permitted movement of the elevator car, such as the limit value of the max... | 08/17/2010 |
| 7766128 | Method for inspecting operation of actuator and actuator operation inspector An actuator used in a safety stop device for an elevator has: a movable portion displaceable between an actuation position where the safety stop device for the elevator is actuated and a normal position where the actuation of the safety stop device is released; and ... | 08/03/2010 |
| 7743891 | Elevator system The present invention discloses a method, a device, a computer program and a system for detecting the arrival in the elevator car/departure from the elevator car of elevator passengers. In the method the vertical acceleration values of the elevator car are received ... | 06/29/2010 |
| 7740112 | Elevator operation control device for selecting an operation control profile In an elevator operation control device, a plurality of operation control profiles for prescribing values regarding operation of an elevator, for example, a speed of a car are registered in an operation control device body. The operation control device body collects... | 06/22/2010 |
| 7717237 | Passenger or cargo elevator A passenger or cargo elevator is disclosed that relies on pull chains in a closed system in which the chains are used both to pull the elevator car and also to pull the counterweights. In this way, it is possible not only to use counterweights that exceed the actual... | 05/18/2010 |
| 7703579 | Positioning method in an elevator system A method and a system for the positioning of the elevator car and the door of the elevator in the condition monitoring system are provided. In the method the accelerations of the elevator car and the door of the elevator are measured with a sensor. By integrating th... | 04/27/2010 |
| 7686140 | Elevator support means monitoring device and a method An elevator installation includes a device for monitoring the state of support belts. An elevator car and a counterweight are connected by the support belts and are movable in a vertical shaft in opposite sense along guide tracks. The monitoring device is fastened t... | 03/30/2010 |
| 7681697 | Elevator operation control device which controls the elevator based on a sensed temperature An elevator operation control device has a component temperature detecting portion for detecting a temperature of a drive device, and a component-protective operation control portion for restraining an elevator from operating in accordance with the temperature detec... | 03/23/2010 |
| 7637357 | Elevator apparatus with sheave rotational speed difference determination for detecting an abnormality In an elevator apparatus, a main rope suspending a car and a balance weight is looped around a traction sheave and a driven sheave of a traction machine. A driving-side speed detecting portion for detecting rotational speed of the traction sheave and a driven-side s... | 12/29/2009 |
| 7631731 | Elevator The present invention relates to an elevator and a method for measuring the load in an elevator, in which the elevator car is suspended on hoisting ropes with at least one upward-directed diverting pulley or diverting pulley pair, from which the elevator ropes go up... | 12/15/2009 |
| 7617912 | Method and apparatus for operating an elevator system A method of operating an elevator system with a drum for taking up a suspension device, a drive unit for driving the drum, and a control unit for controlling the drive unit, includes operating the control unit of the drive unit to prescribe a rotational speed that d... | 11/17/2009 |
| 7604096 | Operation device for elevator An operating apparatus for an elevator is equipped with a landing chair having a storable seat portion and provided at a landing, a landing chair displacement device for displacing the seat portion, and a control device for controlling the landing chair displacement... | 10/20/2009 |
| 7546907 | Method for operating an elevator installation A method for the operation of an elevator installation, wherein the operating parameters for achieving a desired performance are determined by simulation of the operation of the elevator installation, the operating parameter and the desired performance are included ... | 06/16/2009 |
| 7540356 | Method and apparatus to prevent or minimize the entrapment of passengers in elevators during a power failure The invention provides a system and method for handling power outages in a multiple car elevator system in a building having a plurality of floors. The system includes an energy calculator connected to the elevators, and determines a total energy of the elevator sys... | 06/02/2009 |
| 7497304 | Device for detecting failure in driving power supply for elevator, and method for detecting failure in driving power supply for elevator In a feeder circuit for operating a safety device of an elevator, a charging capacitor for actuating an actuator through discharge is employed. A failure detecting device for detecting the presence or absence of a capacitance shortage of a charging capacitor is also... | 03/03/2009 |
| 7484598 | Positioning method in an elevator system The present invention presents a method and a system for the positioning of the elevator car and the door of the elevator in the condition monitoring system. In the method the accelerations of the elevator car and the door of the elevator are measured with sensors. ... | 02/03/2009 |
| 7434666 | Method and system for measuring the stopping accuracy of an elevator car The invention relates to a condition monitoring method and a corresponding system for measuring the stopping accuracy of an elevator car. In the invention, a door zone is defined for each floor, a door zone detector is mounted on the elevator car, the elevator car i... | 10/14/2008 |
| 7431130 | Group controller of elevators In an elevator group supervisory control apparatus, an estimation processing unit determines an estimated in-cage load in departing from a departure floor and estimates at least one of speed, acceleration, and jerk rate of the car in accordance with the estimated in... | 10/07/2008 |
| 7424934 | Method for vibration damping at an elevator car A method for designing a regulator uses a predetermined overall model of an elevator car with known structure. The model parameters are known to greater or lesser extent or estimations are present, wherein the parameters for the elevator car used are to be identifie... | 09/16/2008 |
