Patents by Inventor Julie Ann McDonald

Julie Ann McDonald 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).

  • Manufacture of plain bearings
    Patent number: 6485608
    Abstract: The bearing comprises a metal backing, a sintered layer on said metal backing, and a lining layer infiltrated into pores of the sintered layer and standing proud thereof to provide a bearing surface. The lining layer comprises polytetrafluoroethylene including 2 to 10% by volume of fibrillated aramid fibres.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: November 26, 2002
    Assignee: Glacier Garlock Bearings, Inc.
    Inventors: Julie Ann McDonald, John Edward Wheatley, Anthony Latkowski, David Geoffrey Hall
  • Manufacture of plain bearings
    Patent number: 6425977
    Abstract: A method of manufacturing a bearing material, a bearing material and a bearing having the bearing material on a strong backing are described.
    Type: Grant
    Filed: April 16, 2001
    Date of Patent: July 30, 2002
    Assignee: Glacier Garlock Bearings, Inc.
    Inventors: Julie Ann McDonald, John Edward Wheatley, Anthony Latkowski, David Geoffrey Hall
  • Forming a bearing
    Publication number: 20020018605
    Abstract: A method of forming a bearing comprising adding an aqueous colloidal dispersion of at least one particulate material to an aqueous dispersion of polytetrafluoroethylene. The method also comprises mixing the dispersions for a period sufficient to allow the polytetrafluoroethylene to coagulate to form a mush, spreading the mush onto a support, and curing the mush to form a bearing lining layer on the support.
    Type: Application
    Filed: July 12, 2001
    Publication date: February 14, 2002
    Inventor: Julie Ann McDonald
  • Manufacture of plain bearings
    Publication number: 20010031596
    Abstract: A method of manufacturing a bearing material, a bearing material and a bearing having the bearing material on a strong backing are described.
    Type: Application
    Filed: April 16, 2001
    Publication date: October 18, 2001
    Inventors: Julie Ann McDonald, John Edward Wheatley, Anthony Latkowski, David Geoffrey Hall
  • Method of forming a bearing
    Patent number: 6289590
    Abstract: A method of forming a bearing includes adding at least one particulate material to an aqueous dispersion of polytetrafluoroethylene, mixing the constituents to allow the polytetrafluoroethylene to coagulate to form a mush, spreading the mush on to a support, and curing the mush to form a bearing lining layer on the support. The method is characterized in that the partiulate material is in the form of an aqueous colloidal dispersion including small particles and in that the small particles of the particulate material itself cause coagulation of the polytetrafluoroethylene without need for an additional separate coagulant material.
    Type: Grant
    Filed: May 6, 1999
    Date of Patent: September 18, 2001
    Assignee: Dana Corporation
    Inventor: Julie Ann McDonald