Patents by Inventor Christopher B. Mathiesen

Christopher B. Mathiesen 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).

  • Patent number: 7645406
    Abstract: An adhesive injection process for a Pi-joint assembly comprises the steps of: machining at least two ports into a female part of a Pi-joint assembly; inserting a filler into a gap between a male part and the female part; applying a sealant above the filler; creating a vacuum with a vacuum pump at one port; injecting an adhesive through another port; and drawing the adhesive towards the vacuum pump until the gap under the filler is completely filled with the adhesive. The adhesive injection process incorporates lean technologies that enable increased productivity during the assembly of a Pi-joint design using adhesive bonding. The adhesive injection process is suitable for, but not limited to, applications in the aerospace industry, such as the aircraft airframe assembly. The adhesive injection process may be used for the bonding of upper and lower skins to airframe structure as well as for structure-to-structure bonding.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: January 12, 2010
    Assignee: The Boeing Company
    Inventors: Jeffrey J. Kilwin, Jim S. Piszar, Christopher B. Mathiesen
  • Patent number: 7625623
    Abstract: A joint is formed by joining two structures using a joint element. The joint element has a base and at least two legs extending from the base, the legs defining a slot having opposing sides and a bottom. The joint element is attached to the first structure. A second structure is positioned in the slot. An adhesive is disposed in the slot joining the second structure to the joint element. A cavity is formed between the bottom of the slot and the second structure. The cavity being substantially free of adhesive.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: December 1, 2009
    Assignee: The Boeing Company
    Inventors: Douglas L. Grose, Steven P. Wanthal, Joseph L. Sweetin, Christopher B. Mathiesen, Randy A. Southmayd
  • Publication number: 20090208701
    Abstract: A joint is formed by joining two structures using a joint element. The joint element has a base and at least two legs extending from the base, the legs defining a slot having opposing sides and a bottom. The joint element is attached to the first structure. A second structure is positioned in the slot. An adhesive is disposed in the slot joining the second structure to the joint element. A cavity is formed between the bottom of the slot and the second structure. The cavity being substantially free of adhesive.
    Type: Application
    Filed: April 17, 2009
    Publication date: August 20, 2009
    Applicant: THE BOEING COMPANY
    Inventors: Douglas L. Grose, Steven P. Wanthal, Joseph L. Sweetin, Christopher B. Mathiesen, Randy A. Southmayd
  • Patent number: 7541083
    Abstract: A product including a first structure. A joint element is attached to the first structure. The joint element has a base and at least two legs extending from the base, the legs defining a slot having opposing sides and a bottom. A second structure is positioned in the slot. An adhesive is disposed in the slot joining the second structure to the joint element. A cavity is formed between the bottom of the slot and the second structure. The cavity being substantially free of adhesive.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: June 2, 2009
    Assignee: The Boeing Company
    Inventors: Douglas L. Grose, Steven P. Wanthal, Joseph L. Sweetin, Christopher B. Mathiesen, Randy A. Southmayd
  • Publication number: 20080226869
    Abstract: A product including a first structure. A joint element is attached to the first structure. The joint element has a base and at least two legs extending from the base, the legs defining a slot having opposing sides and a bottom. A second structure is positioned in the slot. An adhesive is disposed in the slot joining the second structure to the joint element. A cavity is formed between the bottom of the slot and the second structure. The cavity being substantially free of adhesive.
    Type: Application
    Filed: May 23, 2008
    Publication date: September 18, 2008
    Applicant: THE BOEING COMPANY
    Inventors: Douglas L. Grose, Steven P. Wanthal, Joseph L. Sweetin, Christopher B. Mathiesen, Randy A. Southmayd
  • Patent number: 7393488
    Abstract: A method of joining a first structure to a second structure using a joint element. The joint element has a base and at least two legs extending from the base and the legs define a slot having opposing sides and a bottom. The method comprises attaching the joint element to the first structure and inserting the second structure into the slot. The method further includes injecting an adhesive into the slot. The method also includes ensuring a cavity is formed between the bottom of the slot and the second structure and the cavity is substantially free of adhesive.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: July 1, 2008
    Assignee: The Boeing Company
    Inventors: Douglas L. Grose, Steven P. Wanthal, Joseph L. Sweetin, Christopher B. Mathiesen, Randy A. Southmayd
  • Publication number: 20080057305
    Abstract: A method of joining a first structure to a second structure using a joint element. The joint element has a base and at least two legs extending from the base and the legs define a slot having opposing sides and a bottom. The method comprises attaching the joint element to the first structure and inserting the second structure into the slot. The method further includes injecting an adhesive into the slot. The method also includes ensuring a cavity is formed between the bottom of the slot and the second structure and the cavity is substantially free of adhesive.
    Type: Application
    Filed: May 25, 2005
    Publication date: March 6, 2008
    Inventors: Douglas L. Grose, Steven P. Wanthal, Joseph L. Sweetin, Christopher B. Mathiesen, Randy A. Southmayd