Patents by Inventor Gregory S. Welsh

Gregory S. Welsh 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).

  • HOISTWAY SHEAVE RESURFACING
    Publication number: 20110318497
    Abstract: A method of and system for repairing the sheaves (24) in an elevator system has these steps. The ropes (22) associated with the sheave are removed, the sheave is cleaned, and a coating (24) is deposited on the cleaned surface. The coating is adapted to reduce the wear coefficient of the surface of the coated sheave by about 80% to 90% with respect to the sheave without a coating. The thickness of the coated sheave is adjusted to produce a specified sheave diameter.
    Type: Application
    Filed: December 23, 2008
    Publication date: December 29, 2011
    Applicant: OTIS ELEVATOR COMPANY
    Inventors: James T. Beals, Mark Steven Thompson, Wayde R. Schmidt, Aaron T. Nardi, Gregory S. Welsh
  • WEAR AND FRICTION CONTROL OF METAL ROPE AND SHEAVE INTERFACES
    Publication number: 20110259676
    Abstract: A coated sheave (24) for use in an elevator system in having at least one rope (22) and sheave combination, where the sheave has a predetermined shape and size for engagement with at least one rope in the elevator system. A coating (27) on the sheave has a wear coefficient of at least 80% less than the wear coefficient of the sheave without the coating.
    Type: Application
    Filed: December 23, 2008
    Publication date: October 27, 2011
    Applicant: OTIS ELEVATOR COMPANY
    Inventors: Aaron T. Nardi, James T. Beals, Wayde R. Schmidt, Gregory S. Welsh, Mark Steven Thompson