Patents by Inventor Chris Dumlao
Chris Dumlao 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).
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Publication number: 20040216250Abstract: A load bearing support structure includes a load bearing support and a load bearing deck. Such a support structure may be used in the construction of a bridge.Type: ApplicationFiled: June 1, 2004Publication date: November 4, 2004Inventors: Chris Dumlao, Kristina Lauraitis, Les Fisher, Alan Miller, Eric Abrahamson
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Publication number: 20030046779Abstract: A load bearing support structure in the form of a traffic-bearing highway bridge including at least one modular structural section. The at least one modular structural section includes at least one beam, the beam comprising a pair of lateral flanges and a medial web between and extending below the flanges. The beam preferably has a flat floor. A load bearing deck is positioned above and supported by the flanges of the at least one beam. The beam and load bearing deck are preferably formed of a polymer matrix composite material. The beam is positioned on and supported by one of a plurality of support members. The beam has a contoured shape configured to be matably supported by a support member having a reciprocally configured contoured shaped. Alternatively, a flat or L-shape support member can be utilized. Further alternatively, the load bearing deck comprising at least one sandwich panel is suitable for applications such as barge decks, hatchcovers, and other load bearing wall applications.Type: ApplicationFiled: October 15, 2002Publication date: March 13, 2003Applicant: MARTIN MARIETTA MATERIALSInventors: Chris Dumlao, Kristina Lauraitis, Les Fisher, Alan Miller, Eric Abrahamson
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Patent number: 6467118Abstract: A load bearing deck structure is made from at least one sandwich panel formed of a ploymer matrix composite material. The sandwich panel comprises a plurality of substantially hollow, elongated core members having side walls, the core members being provided with an upper facesheet and a lower facesheet. Each facesheet is formed integrally with the side walls of the core members and at least one of the side walls is disposed at an oblique angle to one of the upper and lower facesheets so that the side walls and facesheets define a polygonal shape when viewed in cross section.Type: GrantFiled: June 22, 2001Date of Patent: October 22, 2002Assignee: Martin Marietta MaterialsInventors: Chris Dumlao, Kristina Lauraitis, Les Fisher, Alan Miller, Eric Abrahamson
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Publication number: 20020010973Abstract: A load bearing support structure in the form of a traffic-bearing highway bridge including at least one modular structural section. The at least one modular structural section includes at least one beam, the beam comprising a pair of lateral flanges and a medial web between and extending below the flanges. The beam preferably has a flat floor. A load bearing deck is positioned above and supported by the flanges of the at least one beam. The beam and load bearing deck are preferably formed of a polymer matrix composite material. The beam is positioned on and supported by one of a plurality of support members. The beam has a contoured shape configured to be matably supported by a support member having a reciprocally configured contoured shaped. Alternatively, a flat or L-shape support member can be utilized. Further alternatively, the load bearing deck comprising at least one sandwich panel is suitable for applications such as barge decks, hatchcovers, and other load bearing wall applications.Type: ApplicationFiled: June 22, 2001Publication date: January 31, 2002Applicant: MARTIN MARIETTA MATERIALSInventors: Chris Dumlao, Kristina Lauraitis, Les Fisher, Alan Miller, Eric Abrahamson
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Patent number: 6108998Abstract: A modular structural section for use in support structures such as load bearing decks or highway bridges. The modular structural section includes at least one beam and a load bearing deck preferably formed of a polymer matrix composite material. The deck includes a core having elongated core members having side walls positioned generally adjacent one another. Preferably, at least one of the elongated core members has an upper and a lower facesheet extending beyond the side wall to receive another member. Also, preferably, the elongated core members have a polygonal, and more preferably a trapezoidal, shape. Alternatively, the load bearing deck contains at least one sandwich panel suitable for applications such as barge decks, hatchcovers, and other load bearing wall applications. Methods of constructing a support structure utilizing the novel modular structural section and support members are also provided.Type: GrantFiled: February 17, 1998Date of Patent: August 29, 2000Assignee: Martin Marietta Materials, Inc.Inventor: Chris Dumlao
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Patent number: 6092350Abstract: A load bearing deck of a modular structural section for use in support structures such as a load bearing deck or highway bridge. The at least one modular structural section includes at least one beam and a load bearing deck preferably formed of a polymer matrix composite material. The deck includes a core having elongate core members having a polygonal shape, preferably a trapezoidal shape. Alternatively, the load bearing deck comprising at least one sandwich panel is suitable for applications such as barge decks, hatchcovers, and other load bearing wall applications. Methods of constructing a support structure utilizing the modular structural section including the polygonal, preferably trapezoidal core deck, and support members are also provided.Type: GrantFiled: March 10, 1998Date of Patent: July 25, 2000Assignee: Martin Marietta Materials, Inc.Inventors: Chris Dumlao, Eric Abrahamson
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Patent number: 6081955Abstract: A load bearing support structure in the form of a traffic-bearing highway bridge including at least one modular structural section. The at least one modular structural section includes at least one beam, the at least one beam containing a pair of lateral flanges and a medial web between and extending below the flanges. A load bearing deck is positioned above and supported by the flanges of the at least one beam. The at least one beam and load bearing deck are preferably formed of a polymer matrix composite material. Each of the flanges of the at least one beam is positioned on and supported by one of a plurality of support members. Alternatively, the load bearing deck containing at least one sandwich panel is suitable for applications such as barge decks, hatchcovers, and other load bearing wall applications. Methods of constructing a support structure utilizing the modular structural section and support members are also provided.Type: GrantFiled: September 30, 1996Date of Patent: July 4, 2000Assignee: Martin Marietta Materials, Inc.Inventors: Chris Dumlao, Kristina Lauraitis, Michael Jacoby, Les Fisher, Alan Miller, Bryan Hurlbut, Eric Abrahamson
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Patent number: 6070378Abstract: A load bearing deck of a modular structural section for use in support structures such as a load bearing deck or highway bridge. The at least one modular structural section includes at least one beam and a load bearing deck preferably formed of a polymer matrix composite material. The deck includes a core having elongate core members having a polygonal shape, preferably a trapezoidal shape. Alternatively, the load bearing deck comprising at least one sandwich panel is suitable for applications such as barge decks, hatchcovers, and other load bearing wall applications. Methods of constructing a support structure utilizing the modular structural section including the polygonal, preferably trapezoidal core deck, and support members are also provided.Type: GrantFiled: August 25, 1998Date of Patent: June 6, 2000Assignee: Martin Marietta Materials, Inc.Inventors: Chris Dumlao, Eric Abrahamson
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Patent number: 6044607Abstract: A load bearing deck of a modular structural section for use in support structures such as a load bearing deck or highway bridge. The at least one modular structural section includes at least one beam and a load bearing deck preferably formed of a polymer matrix composite material. The deck includes a core having elongate core members having a polygonal shape, preferably a trapezoidal shape. Alternatively, the load bearing deck comprising at least one sandwich panel is suitable for applications such as barge decks, hatchcovers, and other load bearing wall applications. Methods of constructing a support structure utilizing the modular structural section including the polygonal, preferably trapezoidal core deck, and support members are also provided.Type: GrantFiled: March 10, 1998Date of Patent: April 4, 2000Assignee: Martin Marietta Materials, Inc.Inventors: Chris Dumlao, Eric Abrahamson
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Patent number: 6023806Abstract: A load bearing support structure in the form of a traffic-bearing highway bridge including at least one modular structural section. The at least one modular structural section includes at least one beam, the beam comprising a pair of lateral flanges and a medial web between and extending below the flanges. The beam preferably has a flat floor. A load bearing deck is positioned above and supported by the flanges of the at least one beam. The beam and load bearing deck are preferably formed of a polymer matrix composite material. The beam is positioned on and supported by one of a plurality of support members. The beam has a contoured shape configured to be matably supported by a support member having a reciprocally configured contoured shaped. Alternatively, a flat or L-shape support member can be utilized. Further alternatively, the load bearing deck comprising at least one sandwich panel is suitable for applications such as barge decks, hatchcovers, and other load bearing wall applications.Type: GrantFiled: September 30, 1996Date of Patent: February 15, 2000Assignee: Martin Marietta Materials, Inc.Inventors: Chris Dumlao, Kristina Lauraitis, Les Fisher, Alan Miller, Eric Abrahamson
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Patent number: 5794402Abstract: A modular structural section for use in support structures such as load bearing decks or highway bridges. The modular structural section includes at least one beam and a load bearing deck preferably formed of a polymer matrix composite material. The deck includes a core having elongated core members having a polygonal shape, preferably a trapezoidal shape. Alternatively, the load bearing deck contains at least one sandwich panel suitable for applications such as barge decks, hatchcovers, and other load bearing wall applications. Methods of constructing a support structure utilizing the novel modular structural section and support members are also provided.Type: GrantFiled: September 30, 1996Date of Patent: August 18, 1998Assignee: Martin Marietta Materials, Inc.Inventors: Chris Dumlao, Eric Abrahamson