Patents by Inventor Kanna M. Pham

Kanna M. Pham 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).

  • Publication number: 20200247523
    Abstract: A solid laminate stringer includes a base segment that forms a first generally trapezoidal cross section. The solid laminate stringer also includes a transition segment abutting the base segment, with concave sides that are continuous with the sides of the base segment. The solid laminate stringer also includes a top segment abutting the transition segment, where the top segment forms a second generally trapezoidal cross section with sides that are continuous with the concave sides of the transition segment. The solid laminate stringer may also include a first overwrap layer covering the top segment, the transition segment, and at least a portion of the base segment. The solid laminate stringer may also include a second overwrap layer overlapping at least a portion of the first overwrap layer covering the base segment.
    Type: Application
    Filed: April 23, 2020
    Publication date: August 6, 2020
    Inventors: Jiangtian Cheng, Ian E. Schroeder, Gary D. Swanson, Kanna M. Pham, Samuel E. Cregger, Scott M. Spencer
  • Patent number: 10669005
    Abstract: A solid laminate stringer includes a base segment that forms a first generally trapezoidal cross section. The solid laminate stringer also includes a transition segment abutting the base segment, with concave sides that are continuous with the sides of the base segment. The solid laminate stringer also includes a top segment abutting the transition segment, where the top segment forms a second generally trapezoidal cross section with sides that are continuous with the concave sides of the transition segment. The solid laminate stringer also includes a first overwrap layer covering the top segment, the transition segment, and at least a portion of the base segment. The solid laminate stringer also includes a second overwrap layer overlapping at least a portion of the first overwrap layer covering the base segment.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: June 2, 2020
    Assignee: The Boeing Company
    Inventors: Jiangtian Cheng, Ian E. Schroeder, Gary D. Swanson, Kanna M. Pham, Samuel E. Cregger, Scott M. Spencer
  • Publication number: 20200139646
    Abstract: A method of fabricating a plank stringer for use in an aircraft includes grouping a plurality of stacked plies of reinforcing material into a plurality of charges, where each charge in the plurality of charges includes a substack of plies. The method also includes grouping the plurality of charges into two or more groups such that, for each charge in a given group, a respective substack of plies includes a sequence of orientation angles with respect to a longitudinal axis of the plank stringer corresponding to the given group. The method also includes laying up each group of charges as a continuous blanket of plies, where each continuous blanket of plies includes the respective substack of plies for each charge in the respective group. The method also includes cutting each continuous blanket of plies into the respective group of charges and stacking the plurality of charges to form the plank stringer.
    Type: Application
    Filed: November 1, 2018
    Publication date: May 7, 2020
    Inventors: Scott M. Spencer, Jessica R. Hughes, Jae Dong Hwang, Joseph L. Sweetin, Kanna M. Pham, Jaime C. Garcia, Gregory P. Freed, Frederick T. Calkins, Cynthia G. Feng, Jiangtian Cheng
  • Publication number: 20190337242
    Abstract: An example method for forming a flat composite charge into a composite blade stiffener includes cutting a flat composite charge along a cut line into a first piece and a second piece having an angle, positioning the first piece and the second piece of the flat composite charge on a forming mandrel about a tooling plunger, activating the tooling plunger to drive the first piece and the second piece into a cavity of the forming mandrel resulting in the first piece and the second piece folding at the cut line, withdrawing the tooling plunger from the cavity of the forming mandrel, compressing the forming mandrel to apply a lateral pressure to the first piece and the second piece folded into the cavity, and applying a vertical pressure to a first flange and a second flange of the first piece and the second piece, respectively, to form the composite blade stiffener.
    Type: Application
    Filed: July 15, 2019
    Publication date: November 7, 2019
    Inventors: Lisa C. Carlson, Kanna M. Pham, Joseph L. Sweetin, Garrett C. Hanson, Jake A. Reeves, Chilip Chan, Kiet Nguyen
  • Patent number: 10442154
    Abstract: A composite structure including a composite body having an outer surface and a detection layer connected to the outer surface, the detection layer being discontinuous and including glass fibers embedded in a matrix material.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: October 15, 2019
    Assignee: The Boeing Company
    Inventors: Hyukbong Kwon, Kanna M. Pham, Nicholas A. Brigman, Charles Everson
  • Publication number: 20190299544
    Abstract: An apparatus is provided for forming a pleat of a vacuum bag into position over a stringer of an uncured skin panel. The apparatus comprises a leading shoe and a trailing shoe that cooperates with the leading shoe to form the pleat of the vacuum bag. The apparatus also comprises at least one roller assembly for compacting the formed pleat into position over the stringer.
    Type: Application
    Filed: March 30, 2018
    Publication date: October 3, 2019
    Applicant: The Boeing Company
    Inventors: Steven J. McAllister, Lisa C Carlson, Garrett C. Hanson, Kanna M. Pham
  • Publication number: 20190263496
    Abstract: A solid laminate stringer includes a base segment that forms a first generally trapezoidal cross section. The solid laminate stringer also includes a transition segment abutting the base segment, with concave sides that are continuous with the sides of the base segment. The solid laminate stringer also includes a top segment abutting the transition segment, where the top segment forms a second generally trapezoidal cross section with sides that are continuous with the concave sides of the transition segment. The solid laminate stringer also includes a first overwrap layer covering the top segment, the transition segment, and at least a portion of the base segment. The solid laminate stringer also includes a second overwrap layer overlapping at least a portion of the first overwrap layer covering the base segment.
    Type: Application
    Filed: February 27, 2018
    Publication date: August 29, 2019
    Inventors: Jiangtian Cheng, Ian E. Schroeder, Gary D. Swanson, Kanna M. Pham, Samuel E. Cregger, Scott M. Spencer
  • Patent number: 10377091
    Abstract: An example method for forming a flat composite charge into a composite blade stiffener includes cutting a flat composite charge along a cut line into a first piece and a second piece having an angle, positioning the first piece and the second piece of the flat composite charge on a forming mandrel about a tooling plunger, activating the tooling plunger to drive the first piece and the second piece into a cavity of the forming mandrel resulting in the first piece and the second piece folding at the cut line, withdrawing the tooling plunger from the cavity of the forming mandrel, compressing the forming mandrel to apply a lateral pressure to the first piece and the second piece folded into the cavity, and applying a vertical pressure to a first flange and a second flange of the first piece and the second piece, respectively, to form the composite blade stiffener.
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: August 13, 2019
    Assignee: The Boeing Company
    Inventors: Lisa Carlson, Kanna M. Pham, Joseph Sweetin, Garrett C. Hanson, Jake Adam Reeves, Chilip Chan, Kiet Nguyen
  • Publication number: 20190240951
    Abstract: A composite structure including a composite body having an outer surface and a detection layer connected to the outer surface, the detection layer being discontinuous and including glass fibers embedded in a matrix material.
    Type: Application
    Filed: April 22, 2019
    Publication date: August 8, 2019
    Applicant: The Boeing Company
    Inventors: Hyukbong Kwon, Kanna M. Pham, Nicholas A. Brigman, Charles Everson
  • Publication number: 20180117859
    Abstract: An example method for forming a flat composite charge into a composite blade stiffener includes cutting a flat composite charge along a cut line into a first piece and a second piece having an angle, positioning the first piece and the second piece of the flat composite charge on a forming mandrel about a tooling plunger, activating the tooling plunger to drive the first piece and the second piece into a cavity of the forming mandrel resulting in the first piece and the second piece folding at the cut line, withdrawing the tooling plunger from the cavity of the forming mandrel, compressing the forming mandrel to apply a lateral pressure to the first piece and the second piece folded into the cavity, and applying a vertical pressure to a first flange and a second flange of the first piece and the second piece, respectively, to form the composite blade stiffener.
    Type: Application
    Filed: November 1, 2016
    Publication date: May 3, 2018
    Inventors: Lisa Carlson, Kanna M. Pham, Joseph Sweetin, Garrett C. Hanson, Jake Adam Reeves, Chilip Chan, Kiet Nguyen
  • Publication number: 20170100911
    Abstract: A composite structure including a composite body having an outer surface and a detection layer connected to the outer surface, the detection layer being discontinuous and including glass fibers embedded in a matrix material.
    Type: Application
    Filed: October 13, 2015
    Publication date: April 13, 2017
    Inventors: Hyukbong Kwon, Kanna M. Pham, Nicholas A. Brigman, Charles Everson