Patents Assigned to OTIS ELEVATER COMPANY
  • Magnetic elevator door mover
    Publication number: 20070119659
    Abstract: An elevator door mover device (40) includes a threaded ferromagnetic shaft (42). Magnetic movers (48) associated with doors (26) generate magnetic fields that cause the doors to move responsive to rotation of the shaft (42). In one example, a controller (46) controls a speed of a motor (44) that drives the shaft (42). The controller (46) in some examples also selectively controls the strength of the magnetic fields of the movers, which provides more customizable door performance.
    Type: Application
    Filed: November 17, 2003
    Publication date: May 31, 2007
    Applicant: OTIS ELEVATER COMPANY
    Inventor: Richard Fargo