Patents by Inventor George C. Edwards

George C. Edwards 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).

  • Navel member for open end spinning device
    Patent number: 5675965
    Abstract: At least one circular ridge, which projects upwardly beyond the surface of the navel of the thread delivery device, is placed in the path of yarn being removed from the peripheral wall of the spinning chamber and delivered to the throat of the navel. The ridge has a height of at least 0.003" and is radially so located in proximity to the edge of the navel that the yarn being formed and lifted from the wall of the spinning chamber first engages the navel at the ridge.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: October 14, 1997
    Assignee: Burckhardt America, Inc.
    Inventors: Robert D. Mackey, George C. Edwards
  • Open end spinning device
    Patent number: 5475974
    Abstract: At least one circular ridge, which projects upwardly beyond the surface of the navel of the thread delivery device, is placed in the path of yarn being removed from the peripheral wall of the spinning chamber and delivered to the throat of the navel. The ridge has a height of at least. 003" and is radially so located in proximity to the edge of the navel that the yarn being formed and lifted from the wall of the spinning chamber first engages the navel at the ridge. The result of the engagement of the yarn with the ridge is that the twist is reduced and a higher break strength is achieved with a reduction in imperfections.
    Type: Grant
    Filed: October 21, 1994
    Date of Patent: December 19, 1995
    Assignee: Burckhardt America, Inc.
    Inventors: Robert D. Mackey, George C. Edwards
  • Open end spinning device
    Patent number: 5437147
    Abstract: At least one circular ridge, which projects upwardly beyond the surface of the navel of the thread delivery device, is placed in the path of yarn being removed from the peripheral wall of the spinning chamber and delivered to the throat of the navel. The ridge has a height of at least 0.003" and is radially so located in proximity to the edge of the navel that the yarn being formed and lifted from the wall of the spinning chamber first engages the navel at the ridge. The result of the engagement of the yarn with the ridge is that the twist is reduced and a higher break strength is achieved with a reduction in imperfections.
    Type: Grant
    Filed: August 20, 1992
    Date of Patent: August 1, 1995
    Assignee: Burckhardt America, Inc.
    Inventors: Robert D. Mackey, George C. Edwards