Patents by Inventor Eric J. Stober

Eric J. Stober 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).

  • Vibration assisted processing of viscous thermoplastics
    Patent number: 6827896
    Abstract: Cure and consolidation of a viscous thermoplastic resin, especially one that softens and melts at a high temperature, is improved by assisting autoclave pressurized momentum transport for compaction of the composite using high frequency, low amplitude acoustic vibration within the resin. The vibration induces shear thinning in the resin which promotes resin flow, achieves filling or collapse of voids, and assists consolidation of the composite preform.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: December 7, 2004
    Assignee: The Boeing Company
    Inventors: Stephen Christensen, Eric J. Stober
  • Vibration assisted processing of viscous thermoplastics
    Publication number: 20030201580
    Abstract: Cure and consolidation of a viscous thermoplastic resin, especially one that softens and melts at a high temperature, is improved by assisting autoclave pressurized momentum transport for compaction of the composite using high frequency, low amplitude acoustic vibration within the resin. The vibration induces shear thinning in the resin which promotes resin flow, achieves filling or collapse of voids, and assists consolidation of the composite preform.
    Type: Application
    Filed: May 9, 2003
    Publication date: October 30, 2003
    Inventors: Stephen Christensen, Eric J. Stober
  • Vibration assisted processing of viscous thermoplastics
    Patent number: 6592799
    Abstract: Cure and consolidation of a viscous thermoplastic resin, especially one that softens and melts at a high temperature, is improved by assisting autoclave pressurized momentum transport for compaction of the composite using high frequency, low amplitude acoustic vibration within the resin. The vibration induces shear thinning in the resin which promotes resin flow, achieves filling or collapse of voids, and assists consolidation of the composite preform.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: July 15, 2003
    Assignee: The Boeing Company
    Inventors: Stephen Christensen, Eric J. Stober
  • Tooling for vibration assisted processing of viscous thermoplastics
    Patent number: 6033203
    Abstract: Cure and consolidation of a viscous thermoplastic resin, especially one that softens and melts at a high temperature, is improved by assisting autoclave pressurized momentum transport for compaction of the composite using high frequency, low amplitude acoustic vibration within the resin. The vibration induces shear thinning in the resin which promotes resin flow, achieves filling or collapse of voids, and assists consolidation of the composite preform. The vibration is produced with a "shaker table" formed from metal plates sandwiching piezoelectrical transducers. The "shaker table" is coupled to the layup mandrel. The vibration might also be produced as a transducer pad that overlies the preform on the mandrel.
    Type: Grant
    Filed: August 15, 1997
    Date of Patent: March 7, 2000
    Assignee: The Boeing Company
    Inventors: Stephen Christensen, Eric J. Stober