An elevator system wherein a cab is moved within a shaft by a tractive drive system that transmits torque frictional force on the interior surface of the shaft, enabling the cab to travel without cables and travel for long distances. The tractive drive system automatically regulates these normal forces. A method of controlling a plurality of these cabs disposed within a plurality of shafts by means of electronic systems.

A linear propulsion system and method of assembling and testing the same is disclosed. The linear propulsion system may comprise a track, a vehicle, a mover mounted to the vehicle, and a dual inverter system. The track may comprise a first plurality of stator sections interleaved with a second plurality of stator sections. The dual inverter system may include first and second multi-phase inverters that share input hardware.

A linear propulsion system and method of assembling and testing the same is disclosed. The linear propulsion system may comprise a track, a vehicle, a mover mounted to the vehicle, and a dual inverter system. The track may comprise a first plurality of stator sections interleaved with a second plurality of stator sections. The dual inverter system may include first and second multi-phase inverters that share input hardware.

There is provided a conveying device that can support a car weight with a mechanism lighter in weight. A driving device (6) of a conveying device that lifts and lowers a loading-weight support along a rail (3) includes a wheel unit (13) and a link (14). The wheel unit (13) drives to rotate a driving wheel (15) in contact with a guide surface (11) to lift and lower the loading-weight support. The link (14) includes a first joint (17) connected to the wheel unit (13) and a second joint (18) rotatably supported by the loading-weight support. The second joint (18) is arranged in a position further apart from the guide surface (11) than the first joint (17), and above the first joint (17). The link (14) is arranged such that a straight line connecting the first joint (17) and the second joint (18) is tilted smaller than 45 degrees.

Disclosed is a ropeless elevator system having: a car mover operationally connected to an elevator car, the car mover configured to move along a car mover track in a hoistway lane, thereby moving the elevator car along the hoistway lane, wherein the car mover has a first tire of a first wheel that is configured to engage the car mover track when the car mover moves along the car mover track, wherein one or more of the first tire and the car mover track has an engagement feature for increasing traction between the first tire and the car mover track.

Disclosed is a ropeless elevator system having: a car mover operationally connected to an elevator car, the car mover configured to move along a car mover track in a hoistway lane, thereby moving the elevator car along the hoistway lane, wherein the car mover has a first tire of a first wheel that is configured to engage the car mover track when the car mover moves along the car mover track, wherein one or more of the first tire and the car mover track has an engagement feature for increasing traction between the first tire and the car mover track.

An illustrative example embodiment of an elevator includes an elevator car and a drive mechanism connected with the elevator car. The drive mechanism moves with the elevator car in a vertical direction. The drive mechanism includes at least one drive member that is configured to engage a vertical structure near the elevator car, selectively climb along the vertical structure to cause movement of the elevator car, and selectively prevent movement of the elevator car when the drive member remains in a selected position relative to the vertical structure. A biasing mechanism urges the drive member in a direction to engage the vertical structure. The biasing mechanism applies a biasing force based upon a condition of the elevator car. The biasing force changes based upon a change in the condition.

An illustrative example embodiment of an elevator includes an elevator car and a drive mechanism connected with the elevator car. The drive mechanism moves with the elevator car in a vertical direction. The drive mechanism includes at least one drive member that is configured to engage a vertical structure near the elevator car, selectively climb along the vertical structure to cause movement of the elevator car, and selectively prevent movement of the elevator car when the drive member remains in a selected position relative to the vertical structure. A biasing mechanism urges the drive member in a direction to engage the vertical structure. The biasing mechanism applies a biasing force based upon a condition of the elevator car. The biasing force changes based upon a change in the condition.

The present invention relates an elevating apparatus based on a hetero-oriented non-isometric, dual-spiral drive structure, comprising a first carrier and a second carrier, further comprising a first support and a second support that are telescoped together in a manner that they can rotate with respect to each other, the first support is provided with a first recessed portion and a first raised portion that shares the same spiral direction and spiral pitch, the second support is provided with a homo-oriented, isometric, dual-spiral second recessed portion that has a spiral direction different from that of the first recessed portion. The carrier of the present invention is provided in a simply-supported-beam, and the carrier force can be achieved without additional weight, and the operation is stable and reliable.

The invention is an elevator. The elevator is driven by a rack and a chain. The elevator also comprises a transportable frame, a floor, and an elevator shaft. The purpose of the invention is, by using a rack and chain lifting device to drive the elevator, to allow the elevator to be driven from the bottom. Driving the elevator from the bottom makes the structural integrity of the elevator box unnecessary, so that the elevator box can be replaced with an elevator box façade and a fabric door, making the elevator lighter and more economical. In addition, the design of the elevator allows for adjacent doors, battery power, and voice control.