Patents by Inventor Roger Allen Ross

Roger Allen Ross 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).

  • High speed process for making fully-oriented nylon yarns and yarns made thereby
    Patent number: 5981006
    Abstract: A coupled spin-draw process for making a fully-oriented nylon yarn including extruding molten nylon polymer with a selected RV through a spinneret and cooling to produce a yarn. The yarn is withdrawn from the quench zone with a feed roll rotating at a speed of at least 4500 mpm. The process further includes cold drawing followed by relaxing the yarn using a steam intermingling jet and then winding up.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: November 9, 1999
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Walter John Jaegge, Francis Joseph Malone, Jr., Frank Hudson Overton, Roger Allen Ross, Ronald Edward Steele
  • High speed process for making fully-oriented nylon yarns and yarns made thereby
    Patent number: 5750215
    Abstract: A coupled spin-draw process for making a fully-oriented nylon yarn including extruding molten nylon polymer with a selected RV through a spinneret and cooling to produce a yarn. The yarn is withdrawn from the quench zone with a feed roll rotating at a speed of at least 4500 mpm. The process further includes cold drawing followed by relaxing the yarn using a steam intermingling jet and then winding up.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: May 12, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Walter John Jaegge, Francis Joseph Malone, Jr., Frank Hudson Overton, Roger Allen Ross, Ronald Edward Steele
  • Process for melt spinning a plurality of eccentric sheath-core filaments
    Patent number: 4020139
    Abstract: The sticking between an array of melt spun eccentric bicomponent filaments converged together into yarn is avoided by selecting the filaments being converged so that the thin sheath regions of the filaments do not contact one another and conducting the convergence in two steps if the number of filaments required for the yarn is too great for convergence in one step while avoiding the aforesaid contact.
    Type: Grant
    Filed: April 1, 1976
    Date of Patent: April 26, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Roger Allen Ross, Donald Rittler Strachan