Patents by Inventor Terry M. Robar

Terry M. Robar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for detecting elevator rope degradation using electrical resistance
    Patent number: 7123030
    Abstract: A method and system for detecting or measuring defects in an elevator rope having electrically conductive tension members, whereby measured electrical resistance in the tension members is indicative of defects.
    Type: Grant
    Filed: August 12, 2003
    Date of Patent: October 17, 2006
    Assignee: Otis Elevator Company
    Inventors: Terry M. Robar, William A. Veronesi, Paul A. Stucky, Jack F. Gieras
  • Method and apparatus for detecting elevator rope degradation using electrical energy
    Publication number: 20040046540
    Abstract: A method and system for detecting or measuring defects in a rope having ferromagnetic tension members includes a magnetic field exciter and an array of magnetic flux sensors corresponding to the tension members in a known relationship. Measurements of magnetic flux leakage are indicative of defects. Another aspect of the invention includes a method and system for detecting or measuring defects in an elevator rope having electrically conductive tension members, whereby measured electrical resistance in the tension members is indicative of defects.
    Type: Application
    Filed: August 12, 2003
    Publication date: March 11, 2004
    Inventors: Terry M. Robar, William A. Veronesi, Paul A. Stucky, Jack F. Gieras
  • Method and apparatus for magnetic detection of degradation of jacketed elevator rope
    Patent number: 6633159
    Abstract: A method and system for detecting or measuring defects in a rope having ferromagnetic tension members includes a magnetic field exciter and an array of magnetic flux sensors corresponding to the tension members in a known relationship. Measurements of magnetic flux leakage are indicative of defects. Another aspect of the invention includes a method and system for detecting or measuring defects in an elevator rope having electrically conductive tension members, whereby measured electrical resistance in the tension members is indicative of defects.
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: October 14, 2003
    Assignee: Otis Elevator Company
    Inventors: Terry M. Robar, William A. Veronesi, Paul A. Stucky, Jack F. Gieras
  • Linear motor transfer of cab horizontally between elevator and bogey platforms
    Patent number: 5799755
    Abstract: A cab having a wheeled carriage fixed thereto is moved between rails on an elevator car frame and similar rails on a wheeled bogey. The ends of the rails are scarfed in a complimentary fashion so as to provide a temporary half-lap joint between the rails of the bogey and the rails of the car frame. Motion is provided by linear motors having active primaries disposed on the car frame and the bogey and passive secondaries disposed on the cab carriage. Motor control is in response to position signals provided by magnetostrictive linear displacement transducers. The cab carriage includes rollers on vertical axes which contact the insides of the rails for guidance. The cab carriage wheels and rollers are disposed in pairs separated sufficiently so that at least one roller and one wheel of each pair is in contact with a full rail as the carriage crosses the rail joints between the car frame and the bogey.
    Type: Grant
    Filed: November 14, 1996
    Date of Patent: September 1, 1998
    Assignee: Otis Elevator Company
    Inventors: Samuel C. Wan, Richard W. Calcasola, Jack M. Thompson, Vlad Zaharia, Anthony Cooney, Terry M. Robar, Richard J. Ericson, Dave C. Jarvis, Richard R. Polacek, Satish P. Patel