A tracked vehicle encompassing: a load subassembly; a drive track that is retained movably on the load subassembly in order to execute a motion along a circulation path of the drive track;

a linear motor, a stator of the linear motor being arranged in stationary fashion with respect to the load subassembly, and a rotor of the linear motor being arranged for motion together with the drive track, and/or the rotor being embodied in the drive track; the rotor having permanent magnets that are arranged in the drive track and are embodied for motion together with the drive track.

An elevator system includes an elevator car to travel in a hoistway; a linear propulsion system to impart force to the elevator car, the linear propulsion system including: a secondary portion mounted to the elevator car, the secondary portion including a plurality of magnetic poles; and a primary portion mounted in the hoistway, the primary portion including a plurality of coils; and a drive coupled to the primary portion, the drive providing drive signals to at least a section of the primary portion; wherein the drive generates 6 phases of drive signals, each coil associated with one of the 6 phases.

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).

An elevator system includes a hoistway and an elevator car positioned in the hoistway and configured to travel along the hoistway. The elevator car includes an elevator car door. A door operator assembly is fixed in the hoistway at a landing floor and includes a sensor to sense presence of the elevator car at the landing floor; and a door operator mechanism to open both the elevator car door and a landing floor door when the sensor senses presence of the elevator car at the landing floor. A light source may be fixed at the hoistway and a light transmitter is positioned at the elevator car to gather light from the light source and output the light into an interior of the elevator car. A ventilation system may be fixed at the hoistway and is interactive with the elevator car to condition an interior of the elevator car.

An elevator system includes one or more elevator cars configured to travel along a hoistway. One or more rails extend along the hoistway and are operably connected to the one or more elevator cars to guide the one or more elevator cars along the hoistway. Each rail of the one or more rails includes a plurality of rail segments arranged end to end. Each rail segment is affixed to a hoistway wall to transfer vertical loads from the rail segment to the hoistway wall. Each rail segment is secured to the hoistway wall via a plurality of rail support brackets. The vertical loads are transferred from the rail segment to the hoistway wall via at least one rail support bracket of the plurality of rail support brackets.

A ropeless elevator system 10 includes a lane 13, 15, 17. One or more cars 20 are arranged in the lane. At least one linear motor 38, 40 is arranged along one of the lane and the one or more cars, and a magnet 50, 60 is arranged along the other of the lane and the one or more cars. The at least one magnet is responsive to the at least one linear motor. A linear motor controller 70 is operatively connected to the at least one linear motor, and a lane controller 80 is operatively connected to the linear motor controller. A back electro-motive force (EMF) module 84 is operatively connected to at least one of the linear motor controller and the lane controller. The lane controller being configured and disposed to control stopping one of the one or more cars based on a back EMF signal from the at least one linear motor determined by the EMF module.

An evaluation device for an elevator system includes a self-propelled drive unit including a motor secondary to travel along a motor primary in a hoistway, and at least one diagnostic sensor.

An elevator car travels in a lane (113, 115, 117) of an elevator shaft (111). A linear propulsion system imparts force to the car (214). The system includes a first part (116) mounted in the lane of the shaft and a second part (118) mounted to the elevator car configured to co-act with the first part to impart movement to the car. Car state sensors (360a-c) are disposed in the lane and determine a state space vector of the car within the lane. A sensed element (364) on the car is sensed by the plurality of car state sensors when the car is in proximity to the respective car state sensor. A control system (225) applies an electrical current to at least one of the first part and the second part and the plurality of car state sensors communicate with the control system and the linear propulsion system to provide state space vector data.

An embedded power module includes a substrate, first and second semiconducting dies, first and second gates, and first and second vias. The first semiconducting die is embedded in the substrate and spaced between opposite first and second surfaces of the substrate. The second semiconducting die is embedded in the substrate, is spaced between the first and second surfaces, and is spaced from the first semiconducting die. The first gate is located on the first surface. The second gate is located on the second surface. The first via is electrically engaged to the first gate and the second semiconducting die, and the second via is electrically engaged to the second gate and the first semiconducting die.

An elevator system includes at least one shaft and at least one car arranged in the shaft, wherein the shaft is divided into multiple shaft portions, and a plurality of friction drive units are mounted on at least one shaft wall of the shaft. The friction drive units each have at least two friction wheels and wherein the car is moved in each shaft portion by at least one of the friction drive units during operation of the elevator. In at least one of the shaft portions the friction drive unit is driven in an adjustable manner so that the car is moved at a substantially continuously adjustable speed at least in this shaft portion during operation.