Patents by Inventor David Ruffin Burnette

David Ruffin Burnette 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: 7005574
    Abstract: A labor saving system, method, and apparatus for connecting or coupling lengths of electric metallic tubing (“EMT”). The invention uses couplings/connectors that have barbs that are designed to engage corresponding indentations on EMT to ensure proper installation. In one aspect, the invention is an EMT having: an EMT inner surface forming an EMT cavity; an EMT outer surface; an EMT first end; and at least one indentation in the EMT outer surface at or near the EMT first end, the indentation adapted to receive a corresponding barb from a sleeve device. In another aspect, the invention is a sleeve device comprising; a sleeve inner surface forming a sleeve cavity adapted to receive an end of an EMT; a sleeve outer surface; a first sleeve end; at least one barb on the sleeve inner surface at or near the first sleeve end, the barb adapted to engage a corresponding indentation on the EMT.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: February 28, 2006
    Assignee: John Maneely Company
    Inventor: David Ruffin Burnette
  • Patent number: 7005581
    Abstract: A labor saving system, method, and apparatus for connecting or coupling lengths of electric metallic tubing (“EMT”). The invention uses couplings/connectors that have barbs that are designed to engage corresponding indentations on EMT to ensure proper installation. In one aspect, the invention is an EMT having: an EMT inner surface forming an EMT cavity; an EMT outer surface; an EMT first end; and at least one indentation in the EMT outer surface at or near the EMT first end, the indentation adapted to receive a corresponding barb from a sleeve device. In another aspect, the invention is a sleeve device comprising; a sleeve inner surface forming a sleeve cavity adapted to receive an end of an EMT; a sleeve outer surface; a first sleeve end; at least one barb on the sleeve inner surface at or near the first sleeve end, the barb adapted to engage a corresponding indentation on the EMT.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: February 28, 2006
    Assignee: John Maneely Company
    Inventor: David Ruffin Burnette
  • Patent number: 6903267
    Abstract: A labor saving system, method, and apparatus for connecting or coupling lengths of electric metallic tubing (“EMT”). The invention uses couplings/connectors that have barbs that are designed to engage corresponding indentations on EMT to ensure proper installation. In one aspect, the invention is an EMT having: an EMT inner surface forming an EMT cavity; an EMT outer surface; an EMT first end; and at least one indentation in the EMT outer surface at or near the EMT first end, the indentation adapted to receive a corresponding barb from a sleeve device. In another aspect, the invention is a linking device for EMT includes a first section having a link inner surface forming a link cavity adapted to receive an end of an EMT, a link outer surface, and at least one barb access hole adapted to allow a corresponding barb of a sleeve device to extend therethrough when the sleeve device is fitted around the first section; a second section; and a separator between the first and second sections.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: June 7, 2005
    Assignee: John Maneely Company
    Inventor: David Ruffin Burnette
  • Patent number: 6797877
    Abstract: A labor saving system, method, and apparatus for connecting or coupling lengths of electric metallic tubing (“EMT”). The invention uses couplings/connectors that have barbs that are designed to engage corresponding indentations on EMT to ensure proper installation. In one aspect, the invention is an EMT having: an EMT inner surface forming an EMT cavity; an EMT outer surface; an EMT first end; and at least one indentation in the EMT outer surface at or near the EMT first end, the indentation adapted to receive a corresponding barb from a sleeve device. In another aspect, the invention is a sleeve device comprising; a sleeve inner surface formning a sleeve cavity adapted to receive an end of an EMT; a sleeve outer surface; a first sleeve end; at least one barb on the sleeve inner surface at or near the first sleeve end, the barb adapted to engage a corresponding indentation on the EMT.
    Type: Grant
    Filed: April 28, 2003
    Date of Patent: September 28, 2004
    Assignee: Jonn Maneely Company
    Inventor: David Ruffin Burnette