An elevator system includes an elevator car. A first drive assembly engages a first tension member. The first tension member is coupled to the elevator car and to a first counterweight. A second drive assembly engages a second tension member. The second tension member is coupled to the elevator car and to a second counterweight. The first tension member can be coupled to the elevator car at a first position and the second tension member can be coupled to the elevator car at a second position opposite the first position.

An elevator includes a hoistway; an elevator car vertically movable in the hoistway, the passage to and/or from the elevator car being provided in depth direction of the hoistway; a counterweight vertically movable in the hoistway beside the elevator car in width direction of the hoistway; one or more ropes interconnecting the elevator car and the counterweight and hanging from these; a rope wheel arrangement in the bottom end of the hoistway for guiding the one or more ropes; and a vertically oriented guide rail for guiding the elevator car extending between the elevator car and counterweight. The elevator includes a bridge structure mounted on the floor of the hoistway, the bridge structure including a cross member, wherein the guide rail for guiding the elevator car is mounted on top of the cross member, the bridge structure including a passage for the one or more ropes below the cross member, and the one or more ropes pass from the counterweight downwards to the rope wheel arrangement, and the rope wheel arrangement is arranged to guide the one or more ropes to pass below the cross member via said passage and up to the elevator car.

A transfer station (40) for a ropeless elevator system hoistway (11) is provided. The transfer station (40) includes a first lane (13, 15, 17), a second lane (13, 15, 17), and a parking area (42) located proximate one of the first lane (13, 15, 17) and the second lane (13, 15, 17). The transfer station (40) also includes a plurality of carriages (46) moveable within the first lane (13, 15, 17), the second lane (13, 15, 17), and the parking area (42), the plurality of carriages (46) configured to support and move an elevator car (14). The transfer station (40) further includes a cassette (44) configured to support and move the plurality of carriages (46). The transfer station (40) yet further includes a guiding member (48) engaged with the cassette (44), wherein the position of each of the plurality of carriages (46) relative to the first lane (13, 15, 17), the second lane (13, 15, 17) and the parking area (42) is modified by horizontal or vertical movement of the cassette (44).

A method for centering a self-propelled elevator car in an elevator installation, the car having at least two driven friction wheels pressed against each of two opposing guide surfaces of a first and second guide rail strands to drive the car along a travel path, the method including independently adjusting a first rotational speed of the friction wheels acting on the first guide rail strand and a second rotational speed of the friction wheels acting on the second guide rail strand. In a centered state, a center of the car is located on a center plane extending in parallel with the first and second guide rail strands, and when a deviation of the car center from the center plane is detected, the first rotational speed and/or the second rotational speed is changed such that, when the car moves along the travel path, the car center moves toward the center plane.

A door frame of a shaft door is provided for an elevator system having an elevator shaft accessed through the shaft door. The door frame forms a chamber accommodating a control unit for the elevator system. The door frame has a side surface facing the elevator shaft, a first door frame element delimiting the chamber and a second door frame element delimiting the chamber. The first door frame element can be detached from the second door frame element by a movement of the first door frame element, from its closed position, in parallel with the side surface, to open the chamber. The invention also relates to an elevator system (2) comprising such a door frame (22).

An elevator system includes at least one car and at least one counterweight. At least two support means having different physical properties are arranged between the at least one car and the at least one counterweight.

A drive system for an elevator installation includes a drive and a drive suspension for fastening the drive to a support element of the elevator installation. The drive suspension includes a rotary joint for tiltably mounting the drive on the support element and an adjustment device for setting a tilt of the drive about the rotary joint. The support element can be a guide rail wherein the drive system is arranged in an upper end region of the elevator installation.

An elevator system provided in an existing apartment building, includes a motor that is a drive source for a lifting mechanism of an elevator car, a power storage device configured to store power supplied to the motor, and a charger configured to charge the power storage device with power supplied from a power grid. A traveling motor, an in-vehicle power storage device, and an in-vehicle charger of a used vehicle are diverted to the motor, the power storage device and the charger. The power storage device is used as a normal power supply of the elevator system. The motor is driven by power supplied from not the power grid but the power storage device.

Expanding an elevator system in a hoistway of a building including: parking an elevator car at or below a first level, between a first rail system extend along first wall of the hoistway and a second rail system extending along a second wall of the hoistway that is opposite the first wall; raising the second rail system to the second level; supporting an elevator machine with a bedplate; the elevator machine is operatively connected to a machine end of a tension system; and the tension system is operationally connected to the elevator car; engaging a first safety block, operatively connected to the bedplate, to release the second rail system; and raising the bedplate to the second level.

Expanding an elevator system in a hoistway of a building including: parking an elevator car at or below a first level, between a first rail system extend along first wall of the hoistway and a second rail system extending along a second wall of the hoistway that is opposite the first wall; raising the second rail system to the second level; supporting an elevator machine with a bedplate; the elevator machine is operatively connected to a machine end of a tension system; and the tension system is operationally connected to the elevator car; engaging a first safety block, operatively connected to the bedplate, to release the second rail system; and raising the bedplate to the second level.