Patents by Inventor Douglas E. Logan

Douglas E. Logan 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).

  • Patent number: 11718505
    Abstract: A suspension member for suspending and/or driving an elevator car of an elevator system includes a plurality of tension members extending along a length of the suspension member including a plurality of fibers extending along the length of the suspension member bonded into a polymer matrix. A jacket substantially retains the plurality of tension members. The suspension member is configured to be deformed at a suspension member end to allow for installation of the suspension member end into a termination assembly of the elevator system. A method of installing a suspension member of an elevator system into a termination assembly includes deforming a suspension member end and reforming it to a selected shape, inserting the suspension member end into the termination assembly and curing and/or hardening it, and applying a load thereto or to the socket or the wedge to secure the suspension member end in the termination assembly.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: August 8, 2023
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Richard N. Fargo, Mark R. Gurvich, Richard J. Ericson, Douglas E. Logan, John P. Wesson, David Wayne Mckee, Wenping Zhao
  • Patent number: 10850944
    Abstract: A suspension member for suspending and/or driving an elevator car of an elevator system includes a plurality of tension members extending along a length of the suspension member including a plurality of fibers extending along the length of the suspension member bonded into a polymer matrix. A jacket substantially retains the plurality of tension members. The suspension member is configured to be deformed at a suspension member end to allow for installation of the suspension member end into a termination assembly of the elevator system. A method of installing a suspension member of an elevator system into a termination assembly includes deforming a suspension member end and reforming it to a selected shape, inserting the suspension member end into the termination assembly and curing and/or hardening it, and applying a load thereto or to the socket or the wedge to secure the suspension member end in the termination assembly.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: December 1, 2020
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Richard N. Fargo, Mark R. Gurvich, Richard J. Ericson, Douglas E. Logan, John P. Wesson, David Wayne Mckee, Wenping Zhao
  • Publication number: 20200346896
    Abstract: A suspension member for suspending and/or driving an elevator car of an elevator system includes a plurality of tension members extending along a length of the suspension member including a plurality of fibers extending along the length of the suspension member bonded into a polymer matrix. A jacket substantially retains the plurality of tension members. The suspension member is configured to be deformed at a suspension member end to allow for installation of the suspension member end into a termination assembly of the elevator system. A method of installing a suspension member of an elevator system into a termination assembly includes deforming a suspension member end and reforming it to a selected shape, inserting the suspension member end into the termination assembly and curing and/or hardening it, and applying a load thereto or to the socket or the wedge to secure the suspension member end in the termination assembly.
    Type: Application
    Filed: July 16, 2020
    Publication date: November 5, 2020
    Inventors: Richard N. Fargo, Mark R. Gurvich, Richard J. Ericson, Douglas E. Logan, John P. Wesson, David Wayne Mckee, Wenping Zhao
  • Publication number: 20180127241
    Abstract: A suspension member for suspending and/or driving an elevator car of an elevator system includes a plurality of tension members extending along a length of the suspension member including a plurality of fibers extending along the length of the suspension member bonded into a polymer matrix. A jacket substantially retains the plurality of tension members. The suspension member is configured to be deformed at a suspension member end to allow for installation of the suspension member end into a termination assembly of the elevator system. A method of installing a suspension member of an elevator system into a termination assembly includes deforming a suspension member end and reforming it to a selected shape, inserting the suspension member end into the termination assembly and curing and/or hardening it, and applying a load thereto or to the socket or the wedge to secure the suspension member end in the termination assembly.
    Type: Application
    Filed: November 7, 2017
    Publication date: May 10, 2018
    Inventors: Richard N. Fargo, Mark R. Gurvich, Richard J. Ericson, Douglas E. Logan, John P. Wesson, David Wayne Mckee, Wenping Zhao
  • Patent number: 8734203
    Abstract: An illustrative method of making a load bearing member for use in an elevator system includes mechanically roughening at least one surface on an exterior of a jacket of the load bearing member to establish a friction characteristic that facilitates engagement between an elevator system sheave and the roughened surface.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: May 27, 2014
    Assignee: Otis Elevator Company
    Inventors: John T. Pitts, Ary O. Mello, Hugh J. O'Donnell, John P. Wesson, William A. Veronesi, Douglas E. Logan, Mark Steven Thompson, Kathryn Rauss Sherrick, Bill Perron
  • Publication number: 20130277879
    Abstract: An illustrative method of making a load bearing member for use in an elevator system includes mechanically roughening at least one surface on an exterior of a jacket of the load bearing member to establish a friction characteristic that facilitates engagement between an elevator system sheave and the roughened surface.
    Type: Application
    Filed: May 3, 2013
    Publication date: October 24, 2013
    Inventors: John T. Pitts, Ary O. Mello, Hugh J. O'Donnell, John P. Wesson, William A. Veronesi, Douglas E. Logan, Mark Steven Thompson, Kathryn Rauss Sherrick, Bill Perron
  • Patent number: 8449349
    Abstract: An elevator load bearing member assembly includes at least one roughened surface (46) on a polyurethane jacket (44). In one example, mechanical roughening is used to roughen the surface (46) after the jacket has been extruded onto tension members (42). In another example, the temperatures used for molding a jacket (44) are controlled to induce melt fracture and roughen the surface (46) during the forming process. Other examples include chemically roughening the jacket surface and using localized heating to roughen the surface. The roughened jacket surface improves friction characteristics of a load bearing member assembly.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: May 28, 2013
    Assignee: Otis Elevator Company
    Inventors: Mark S. Thompson, William A. Veronesi, John Pitts, Ary O. Mello, Hugh J. O'Donnell, John P. Wesson, William C. Perron, Douglas E. Logan, Kathryn Rauss Sherrick, Richard Phillips, Peter Schreiner, Pierangelo Jotti
  • Publication number: 20090120731
    Abstract: An elevator load bearing member assembly includes at least one roughened surface (46) on a polyurethane jacket (44). In one example, mechanical roughening is used to roughen the surface (46) after the jacket has been extruded onto tension members (42). In another example, the temperatures used for molding a jacket (44) are controlled to induce melt fracture and roughen the surface (46) during the forming process. Other examples include chemically roughening the jacket surface and using localized heating to roughen the surface. The roughened jacket surface improves friction characteristics of a load bearing member assembly.
    Type: Application
    Filed: March 15, 2004
    Publication date: May 14, 2009
    Inventors: Mark S. Thompson, William A. Veronesi, John Pitts, Ary O. Mello, Hugh J. O'donnell, John P. Wesson, William C. Perron, Douglas E. Logan, Kathryn Rauss Sherrick, Richard Phillips, Peter Schreiner, Pierangelo Jotti
  • Patent number: 7117981
    Abstract: A load bearing assembly in an elevator system includes a plurality of discernable markings on an external surface of the assembly. A monitoring device includes at least one detector that detects locations of the markings along the length of the assembly. Changes in spacing between markings provides an indication of belt loading conditions and provides an ability to determine a condition of the belt relative to whether a replacement of the belt may be necessary. A variety of markings and a variety of detecting arrangements are disclosed.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: October 10, 2006
    Assignee: Otis Elevator Company
    Inventors: Douglas E. Logan, Leroy H. Favrow, Robert J. Haas, Paul A. Stucky, Neil R. Baldwin
  • Patent number: 6742769
    Abstract: In an elevator sheave for a flat belt, hard, thin surface plating can be applied to enhance durability while maintaining traction.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: June 1, 2004
    Assignee: Otis Elevator Company
    Inventors: Pedro S. Baranda, John T. Pitts, Richard L. Hollowell, John P. Wesson, Douglas E. Logan, Zlatko Strbuncelj, James Hubbard
  • Publication number: 20030111298
    Abstract: A load bearing assembly in an elevator system includes a plurality of discernable markings on an external surface of the assembly. A monitoring device includes at least one detector that detects locations of the markings along the length of the assembly. Changes in spacing between markings provides an indication of belt loading conditions and provides an ability to determine a condition of the belt relative to whether a replacement of the belt may be necessary. A variety of markings and a variety of detecting arrangements are disclosed.
    Type: Application
    Filed: December 19, 2001
    Publication date: June 19, 2003
    Inventors: Douglas E. Logan, Leroy H. Favrow, Robert J. Haas, Paul A. Stucky, Neil R. Baldwin
  • Publication number: 20030025109
    Abstract: In an elevator sheave for a flat belt, hard, thin surface plating can be applied to enhance durability while maintaining traction.
    Type: Application
    Filed: July 1, 2002
    Publication date: February 6, 2003
    Applicant: Otis Elevator Company
    Inventors: Pedro S. Baranda, John T. Pitts, Richard L. Hollowell, John P. Wesson, Douglas E. Logan, Zlatko Strbuncelj, James Hubbard
  • Patent number: 6419208
    Abstract: In an elevator sheave for a flat belt, the optimum crown height is within a range of approximately 0.033 to about 0.003 times the width of the elevator rope. The optimum radius is in the range of about 16.67 to about 50.00 times the width of the elevator rope. Both the crown height (h) and the crown radius (rc) may be expressed as a function of belt width (Wb). The groove width (wg) is in the range of approximately 1.5 and 2.25 times the width of the belt (Wb). A circumferential surface roughness of about 1.0 to 3.0 is applied. A hard, thin surface coating can be applied to enhance durability while maintaining traction.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: July 16, 2002
    Assignee: Otis Elevator Company
    Inventors: Pedro S. Baranda, John T. Pitts, Richard L. Hollowell, John P. Wesson, Douglas E. Logan