Patents by Inventor Jeffrey Liaw

Jeffrey Liaw 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).

  • Adhering sealing member to metal with weld heat
    Patent number: 6916391
    Abstract: A method of securing a sealing washer to one surface of a metal sheet while welding a head of a fastener to a second surface of a metal sheet, the method comprising: compressing the head onto the second surface of the sheet between a first electrode engaging the head and a second electrode engaging the first surface of the sheet, welding the head to the second surface of the sheet by electrical resistance welding to heat the first surface of the sheet proximate to the first electrode, urging a sealing washer into the heated first surface with the second electrode to heat the sealing washer and thereby bond the sealing washer to the first surface.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: July 12, 2005
    Assignee: Van-Rob, Inc.
    Inventor: Jeffrey Liaw
  • Adhering sealing member to metal with weld heat
    Publication number: 20020162620
    Abstract: A method of securing a sealing washer to one surface of a metal sheet while welding a head of a fastener to a second surface of a metal sheet, the method comprising: compressing the head onto the second surface of the sheet between a first electrode engaging the head and a second electrode engaging the first surface of the sheet, welding the head to the second surface of the sheet by electrical resistance welding to heat the first surface of the sheet proximate to the first electrode, urging a sealing washer into the heated first surface with the second electrode to heat the sealing washer and thereby bond the sealing washer to the first surface.
    Type: Application
    Filed: November 29, 2001
    Publication date: November 7, 2002
    Inventor: Jeffrey Liaw