A conveyance system includes an alternating current (AC) power source (28), a machine (30) for moving a conveyance apparatus, and a regenerative drive (20). The machine is connected to the AC power source by the regenerative drive. The regenerative drive i...

An elevator machine assembly includes a motor and an elevator drive configured to control power supply to the motor. The elevator drive includes at least a plurality of converter switches and an energy storage device that is situated to be charged in respo...

An elevator system (31) comprising a power control system (16). The power control system (16) includes a multi-channel DC-DC converter (2) including a plurality of parallel channels (4). Each channel (4) of the multi-channel DC-DC converter (2) is independ...

An illustrative example embodiment of an elevator system (20) includes an elevator car (22, 22') that is configured for movement along a path. An elevator car power supply (30, 30') is supported for movement with the elevator car and includes a plurality o...

An elevator safety device 16 for monitoring a landing door 10 of an elevator system 2 is provided. The elevator system 2 comprises a landing door sensor 14 arranged to detect a state of the landing door 10. The elevator safety device 16 comprises a power s...

A tool for surveying a multi-level elevator hoistway (117) in preparation for installing hoistway rails, the tool having: a platform (240) supporting a spatial range sensor (250) that has an electronic controller (260), the controller receives instructions...

Disclosed is an elevator system for a building, the system including a first elevator for transporting a passenger with a first mobile device between a plurality of lobbies, the system comprising a controller that communicates with the first mobile device ...

Disclosed is a method of communicating directions to an end destination (135) by one or more drones (140), the method having steps of moving via flying motion by a first drone (140A) between a first location (212A) and a second location (212B) along a trav...

An elevator brake (10), comprising a first braking member (14), said first braking member being biased by a first spring means (28a, 28b, 28c, 28d) into engagement with a braking surface, said first braking member (14) comprising a first armature (20) bein...