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).
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Patent number: 11718505Abstract: 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: GrantFiled: July 16, 2020Date of Patent: August 8, 2023Assignee: OTIS ELEVATOR COMPANYInventors: Richard N. Fargo, Mark R. Gurvich, Richard J. Ericson, Douglas E. Logan, John P. Wesson, David Wayne Mckee, Wenping Zhao
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Patent number: 10850944Abstract: 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: GrantFiled: November 7, 2017Date of Patent: December 1, 2020Assignee: OTIS ELEVATOR COMPANYInventors: Richard N. Fargo, Mark R. Gurvich, Richard J. Ericson, Douglas E. Logan, John P. Wesson, David Wayne Mckee, Wenping Zhao
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Publication number: 20200346896Abstract: 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: ApplicationFiled: July 16, 2020Publication date: November 5, 2020Inventors: Richard N. Fargo, Mark R. Gurvich, Richard J. Ericson, Douglas E. Logan, John P. Wesson, David Wayne Mckee, Wenping Zhao
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Publication number: 20180127241Abstract: 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: ApplicationFiled: November 7, 2017Publication date: May 10, 2018Inventors: Richard N. Fargo, Mark R. Gurvich, Richard J. Ericson, Douglas E. Logan, John P. Wesson, David Wayne Mckee, Wenping Zhao
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Patent number: 8734203Abstract: 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: GrantFiled: May 3, 2013Date of Patent: May 27, 2014Assignee: Otis Elevator CompanyInventors: 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
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Publication number: 20130277879Abstract: 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: ApplicationFiled: May 3, 2013Publication date: October 24, 2013Inventors: 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
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Patent number: 8449349Abstract: 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: GrantFiled: March 15, 2004Date of Patent: May 28, 2013Assignee: Otis Elevator CompanyInventors: 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
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Publication number: 20090120731Abstract: 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: ApplicationFiled: March 15, 2004Publication date: May 14, 2009Inventors: 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
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Patent number: 7117981Abstract: 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: GrantFiled: December 19, 2001Date of Patent: October 10, 2006Assignee: Otis Elevator CompanyInventors: Douglas E. Logan, Leroy H. Favrow, Robert J. Haas, Paul A. Stucky, Neil R. Baldwin
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Patent number: 6742769Abstract: In an elevator sheave for a flat belt, hard, thin surface plating can be applied to enhance durability while maintaining traction.Type: GrantFiled: July 1, 2002Date of Patent: June 1, 2004Assignee: Otis Elevator CompanyInventors: Pedro S. Baranda, John T. Pitts, Richard L. Hollowell, John P. Wesson, Douglas E. Logan, Zlatko Strbuncelj, James Hubbard
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Publication number: 20030111298Abstract: 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: ApplicationFiled: December 19, 2001Publication date: June 19, 2003Inventors: Douglas E. Logan, Leroy H. Favrow, Robert J. Haas, Paul A. Stucky, Neil R. Baldwin
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Publication number: 20030025109Abstract: In an elevator sheave for a flat belt, hard, thin surface plating can be applied to enhance durability while maintaining traction.Type: ApplicationFiled: July 1, 2002Publication date: February 6, 2003Applicant: Otis Elevator CompanyInventors: Pedro S. Baranda, John T. Pitts, Richard L. Hollowell, John P. Wesson, Douglas E. Logan, Zlatko Strbuncelj, James Hubbard
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Patent number: 6419208Abstract: 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: GrantFiled: April 1, 1999Date of Patent: July 16, 2002Assignee: Otis Elevator CompanyInventors: Pedro S. Baranda, John T. Pitts, Richard L. Hollowell, John P. Wesson, Douglas E. Logan