Patents by Inventor David Dwayne Norman

David Dwayne Norman 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).

  • Method for making bobbin for insulating an electric motor stator
    Patent number: 5973423
    Abstract: A bobbin insulating and electric motor stator form an adjacent wire coil is made from a bobbin assembly including a first part and a second part, both formed of a dielectric thermal vacuum formable polymer. The first part includes a first flange and first tube extending integrally from the first flange. The second part includes a second flange and a second tube extending integrally from the second flange. The first and second tubes are sized and shaped so as to be engageable together to form an endless winding surface between the first and second flanges. The first and second parts are made with thermal vacuum techniques to be very thin. The thickness of the first and second parts ranges from 2 to about 25 mils, more desirably 2 to about 15 mils, still more desirably 2 to about 10 mils, and most desirably 2 to about 7 mils.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: October 26, 1999
    Assignee: Electrical Insulation Suppliers, Inc.
    Inventors: Thomas James Hazelton, David Dwayne Norman
  • Bobbin for insulating an electric motor stator and method for making same
    Patent number: 5892312
    Abstract: A bobbin insulating and electric motor stator form an adjacent wire coil is made from a bobbin assembly including a first part and a second part, both formed of a dielectric thermal vacuum formable polymer. The first part includes a first flange and first tube extending integrally from the first flange. The second part includes a second flange and a second tube extending integrally from the second flange. The first and second tubes are sized and shaped so as to be engageable together to form an endless winding surface between the first and second flanges. The first and second parts are made with thermal vacuum techniques to be very thin. The thickness of the first and second parts ranges from 2 to about 25 mils, more desirably 2 to about 15 mils, still more desirably 2 to about 10 mils, and most desirably 2 to about 7 mils.
    Type: Grant
    Filed: June 4, 1997
    Date of Patent: April 6, 1999
    Assignee: Electrical Insulation Suppliers, Inc.
    Inventors: Thomas James Hazelton, David Dwayne Norman