Patents Examined by Elvin G. Ehad
  • Elevator motor with flat construction
    Patent number: 5783895
    Abstract: An elevator motor (2) employing permanent magnets (30) attached in a circle on the surface (36) of the rotor disc (12). The rotor disc (12) forms part of both the magnetic circuit and the supporting structure of the rotor (13). The permanent magnets (30) are placed in a separate cavity formed in the stator disc and having one side open, the cavity also housing the stator windings (17). The outer cavity wall directed towards the rotor disc (12) is provided with a sealing member to close the cavity.
    Type: Grant
    Filed: April 3, 1995
    Date of Patent: July 21, 1998
    Assignee: Kone Oy
    Inventors: Harri Hakala, Esko Aulanko, Jorma Mustalahti