Patent ID: 11873191
Assignee: OTIS ELEVATOR COMPANY
Field: Handling (Mechanical engineering)
Classification: CPC B  G  H  Y | IPC B  G  H

Claim 16:
17. An elevator propulsion device, comprising:
at least one drive member configured to engage and climb along a vertical structure;
a motor module including at least one motor configured to cause movement of the drive member and corresponding movement of an elevator cab, the motor module having a top and a plurality of sides that are transverse to the top and extend below the top; and
a power supply including at least one energy source that is configured to provide power to the motor, wherein the power supply is situated adjacent the motor module such that a mass of the at least one energy source provides a noise barrier to reduce transmission of noise from the motor into the elevator cab, the power supply including a plurality of energy sources, at least some of the energy sources being arranged as a first noise barrier layer between the top of the motor module and the elevator cab, at least some others of the energy sources being arranged as a second noise barrier layer situated below the first noise barrier layer, the at least some others of the energy sources being situated adjacent the plurality of sides of the motor module such that the motor module is at least partially tucked into a recessed space defined by the first noise barrier layer and the second noise barrier layer.