A wireless power transfer system for wirelessly powering a conveyance apparatus of a first conveyance system and a conveyance apparatus of a second conveyance system including: a wireless electrical power transmitter located along a support or a side of the first conveyance system and a support or a side of the second conveyance system; a wireless electrical power receiver of the first conveyance system located along a surface of the conveyance apparatus of the first conveyance system opposite the support or the side of the first conveyance system; a wireless electrical power receiver of the second conveyance system located along a surface of the conveyance apparatus of the second conveyance system opposite the support or the side of the second conveyance system, wherein the wireless electrical power transmitter is configured to wirelessly transmit electric power to the wireless electrical power receiver of the first and second conveyance system.

An elevator renewal construction method includes a series of divided construction work steps, each being determined as such a unit that the elevator operation becomes normally possible after finishing of each of the divided construction work steps, wherein one of the series of the divided construction work steps comprises the steps of: replacing an old control panel of the existing elevator with a new control panel; connecting an old cable for an old car device, which has connected the old car device and the old control panel of the existing elevator to each other, to a communication conversion unit provided in the new control panel; and converting a new serial communication system to an old serial communication system by the new control panel via the communication conversion unit and the old cable to control the old car device through the old serial communication system.

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.

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.

An elevator system includes an elevator car disposed in and arranged to move along a hoistway. A linear propulsion system of the elevator system is constructed and arranged to propel the elevator car, and includes a plurality of primary coils engaged to and distributed along the hoistway generally defined by a stationary structure. A wireless power transfer system of the elevator system is configured to inductively transfer power to the elevator car. The wireless power transfer system includes a secondary coil mounted to the elevator car and is configured to be induced with electromotive forces by the primary coils and output power for use by the elevator car. A communication system of the elevator system is configured to utilize the secondary coil and the plurality of primary coils to exchange a communication data signal.

A damper unit for an elevator, for the purpose of reducing vertical vibration of a stopping elevator car, has at least one roller that, in an active position, is in contact with a guide rail for the elevator car and can be rotated about an axis of rotation. For damping rotary movements during vertical vibration of the stopping elevator car, the roller is connected to a rotation damper.

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.

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.

An elevator system having a car which can be moved along an elevator shaft in a direction of travel. The elevator shaft includes a busbar that extends in the direction of the direction of travel. The car comprises a current collector that can be moved between a first position and a second position along a compression direction. In the first position, the current collector is in engagement with the busbar such that there is an electrical connection between the busbar and the current collector. In the second position, the current collector is disengaged from the busbar, such that the electrical connection between the busbar and the current collector is separated.

According to one embodiment, an inductor unit includes a first inductor and a second inductor. The first inductor includes a first magnetic core and a first coil winded around the first magnetic core. The second inductor includes a second magnetic core and a second coil winded around the second magnetic core. The first inductor and the second inductor are placed so that a first angle between a first line and a fifth line is equal to or greater than 0 degrees and is equal to or less than 90 degrees. The cross section of the first coil in the width direction and a cross section of the first coil in the width direction are overlapping at least at direction of the first magnetic flux or direction of the second magnetic flux.