Patents by Inventor Donald C. Darrow

Donald C. Darrow 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).

  • Wrinkle reduction in uncured composite laminates
    Patent number: 9150700
    Abstract: Wrinkles are removed from fiber reinforced resin plies of an uncured composite layup by subjecting the wrinkles to vibration and pressure.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: October 6, 2015
    Assignee: THE BOEING COMPANY
    Inventors: Juan C. Guzman, Douglas A. McCarville, Daniel M. Rotter, Todd J. Washburn, Kurtis S. Willden, Donald C. Darrow
  • Contoured composite parts
    Patent number: 8535784
    Abstract: One embodiment of a composite part comprises a curved elongated section comprising a plurality of stacked reinforcement layers. The stacked reinforcement layers in the curved elongated section comprise at least one of non-continuous woven fabric and non-continuous reinforcement.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: September 17, 2013
    Assignee: The Boeing Company
    Inventors: Donald C. Darrow, Michael R. Anderson, Michael A. Lee, Kurtis S. Willden
  • CONTOURED COMPOSITE PARTS
    Publication number: 20120171410
    Abstract: One embodiment of a composite part comprises a curved elongated section comprising a plurality of stacked reinforcement layers. The stacked reinforcement layers in the curved elongated section comprise at least one of non-continuous woven fabric and non-continuous reinforcement.
    Type: Application
    Filed: March 5, 2012
    Publication date: July 5, 2012
    Applicant: THE BOEING COMPANY
    Inventors: Donald C. Darrow, Michael R. Anderson, Michael A. Lee, Kurtis S. Wilden
  • Contoured composite parts
    Patent number: 8152948
    Abstract: One embodiment of a composite part comprises a curved elongated section comprising a plurality of stacked reinforcement layers. The stacked reinforcement layers in the curved elongated section comprise at least one of non-continuous woven fabric and non-continuous reinforcement.
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: April 10, 2012
    Assignee: The Boeing Company
    Inventors: Donald C. Darrow, Michael R. Anderson, Michael A. Lee, Kurtis S. Wilden
  • WRINKLE REDUCTION IN UNCURED COMPOSITE LAMINATES
    Publication number: 20100078845
    Abstract: Wrinkles are removed from fiber reinforced resin plies of an uncured composite layup by subjecting the wrinkles to vibration and pressure.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 1, 2010
    Inventors: Juan C. Guzman, Douglas McCarville, Daniel M. Rotter, Todd J. Washburn, Kurtis S. Willden, Donald C. Darrow
  • CONTOURED COMPOSITE PARTS
    Publication number: 20090176066
    Abstract: One embodiment of a composite part comprises a curved elongated section comprising a plurality of stacked reinforcement layers. The stacked reinforcement layers in the curved elongated section comprise at least one of non-continuous woven fabric and non-continuous reinforcement.
    Type: Application
    Filed: January 9, 2008
    Publication date: July 9, 2009
    Applicant: THE BOEING COMPANY
    Inventors: DONALD C. DARROW, MICHAEL R. ANDERSON, MICHAEL A. LEE, KURTIS S. WILDEN
  • HYBRID COMPOSITE-METAL AIRCRAFT LANDING GEAR AND ENGINE SUPPORT BEAMS
    Publication number: 20080283667
    Abstract: A hybrid composite-metal component is provided. The component includes an elongate inner metal piece, an outer metal piece disposed about at least a portion of the inner metal piece, and composite material disposed between the inner metal piece and the outer metal piece. The component may further include at least one of a seal and at least one fastener joining the inner metal piece and outer metal piece. Both the inner metal piece and the outer metal piece may include at least one tapered end. The tapered ends of both the inner metal piece and the outer metal piece each may include a double taper.
    Type: Application
    Filed: December 8, 2006
    Publication date: November 20, 2008
    Inventor: Donald C. Darrow
  • Pressure balanced processing of composite structures
    Patent number: 5242651
    Abstract: A method of processing a composite structure in an autoclave involves producing a layup (10) with a low density honeycomb core (12) covered by resin impregnated composite face plies (14). The layup is sealed to a mold (18) under a vacuum bag (20). The layup is then cured in an autoclave under high temperatures and pressures. A vacuum is applied between the layup (10) and the vacuum bag (20) via a vacuum port (22), thus creating a pressure differential across the bag (20). This creates a compressive consolidating force on the composite face plies (14). Volatiles emitted during curing are drawn away through the vacuum port (22). The core (12) communicates with the autoclave by means of a pressurization tube (26) which penetrates the mold (18) and into the core (12), thus eliminating the pressure differential between the core (12) and the autoclave. Autoclave pressure is communicated throughout the entire core via perforations (13) in the honeycomb core (12).
    Type: Grant
    Filed: July 25, 1990
    Date of Patent: September 7, 1993
    Assignee: Vought Aircraft Company
    Inventors: Thomas H. Brayden, Donald C. Darrow