Patents by Inventor Paul E. Liggett

Paul E. Liggett 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: 8524621
    Abstract: A laminate material for lighter-than-air vehicles includes at least one monofilament yarn layer, a polymeric film layer adjacent to the at least one monofilament layer, and a metallized coating adjacent to said polymeric film layer. A clear film cover layer may be adhered to the metallized coating, and one or more fluorescent dyes may be incorporated into the clear film layer.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: September 3, 2013
    Assignee: Lockheed Martin Corporation
    Inventors: Paul E. Liggett, Dennis L. Carter, Anthony L. Dunne, Dhiraj H. Darjee, Gerald W. Placko, James I. Mascolino, Lowell J. McEowen
  • Patent number: 8256086
    Abstract: A method for producing a missile nose cone is disclosed. The method consists of manufacturing a first missile nose cone from a first lot of polymeric material and determining a first rupture value. The method further consists of manufacturing a second missile nose cone from a second lot of polymeric material and determining a second rupture value of the second missile nose cone. Both first and second lots of material are mixed into a test batch with one another based on their associated rupture values. An evaluation missile nose cone is then manufactured from the test batch and a determination is made as to whether the evaluation missile nose cone has a desired rupture value. If a desired rupture value is not obtained, then the mixing and evaluation steps are repeated.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: September 4, 2012
    Assignee: Lockheed Martin Corporation
    Inventors: Robert A. Shutler, Margaret Rose Manning, Paul A. Leitch, Paul E. Liggett
  • Patent number: 8168283
    Abstract: The present invention is generally directed to tapes or laminates designed for use in conjunction with lighter-than-air vehicles, platforms or other inflated structures. In one embodiment, the present invention is directed to tapes or laminates designed for use in logos and/or identification numbers that can be, for example, used on a lighter-than-air vehicle, platform or other inflated structure. In another embodiment, the present invention is directed to tapes or laminates that include, among other layers, at least one dichroic layer designed to produce a logo, letter and/or number that can be, for example, used on a lighter-than-air vehicle, platform or other inflated.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: May 1, 2012
    Assignee: Lockheed Martin Corporation
    Inventor: Paul E. Liggett
  • Patent number: 8158236
    Abstract: The present invention is generally directed to tapes designed for use in conjunction with lighter-than-air vehicles, platforms or other inflated structures. In one embodiment, the present invention is directed to conductive seam cover tape that can be, for example, used to protect and/or cover one or more seams in a lighter-than-air vehicle, platform or other inflated structure. In another embodiment, the present invention is directed to a conductive seam cover tape that can be, for example, used to protect and/or cover fabric panels or sections that are used to form lighter-than-air vehicles, platforms or other inflated structures that are in, one instance, designed for deployment at high altitudes.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: April 17, 2012
    Assignee: Lockheed Martin Corporation
    Inventors: Paul E. Liggett, Steven L. Sinsabaugh, James I. Mascolino
  • Patent number: 8152093
    Abstract: Various laminate structures and methods of making laminate structures are provided. In one embodiment, a laminate structure includes a base layer, a metallized layer comprising an electronic/embedded device which is adhered to the base layer. A coating layer which is adhered to the conductive layer, and a non-metallic dichroic layer adhered to the coating layer. In another embodiment, the non-metallic dichroic layer directly contacts the electronic/embedded devices of the conductive layer. The laminate structures herein can be used in the hull of the air vehicles to communicate with satellites and ground based receiving stations, for example. The electronic/embedded devices of the laminate structures provide a low weight solution to transmitting and receiving data within an air vehicle.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: April 10, 2012
    Assignee: Lockheed Martin Corporation
    Inventors: Paul E. Liggett, Thomas M. Whiteleather
  • Patent number: 8061214
    Abstract: The subject invention relates to an apparatus and process for testing various parameters and properties of high strength flexible, fabric laminates. In particular, the apparatus comprises a machine using individually controlled loads to test various material parameters.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: November 22, 2011
    Assignee: Lockheed Martin Corporation
    Inventors: Paul E. Liggett, Dennis L. Carter, Nicholas L. Barnes, James I. Mascolino, Anthony L. Dunne, Aaron C. Graham
  • Patent number: 8003185
    Abstract: A splice seam for joining various sections of fabric together is disclosed, wherein the fabric sections are initially delaminated into their constituent plies. The plies associated with each fabric section are then fully interleaved with each other, and bonded together. The amount of surface area between each interleaved plies can be adjusted as so as to achieve a desired level of load carrying strength between the fabric sections.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: August 23, 2011
    Assignee: Lockheed Martin Corporation
    Inventor: Paul E. Liggett
  • Publication number: 20110174056
    Abstract: The subject invention relates to an apparatus and process for testing various parameters and properties of high strength flexible, fabric laminates. In particular, the apparatus comprises a machine using individually controlled loads to test various material parameters.
    Type: Application
    Filed: May 8, 2008
    Publication date: July 21, 2011
    Applicant: LOCKHEED MARTIN CORPORATION
    Inventors: Paul E. LIGGETT, Dennis L. CARTER, Nicholas L. BARNES, James I. MASCOLINO, Anthony L. Dunne, Aaron C. GRAHAM
  • Patent number: 7878453
    Abstract: A power-generating laminate for an airship comprises a base fabric layer, a barrier layer disposed upon the fabric layer, an inner metal film layer disposed upon the barrier layer, a piezoelectric/pyroelectric layer disposed upon the inner metal layer, an outer metal layer disposed upon the piezoelectric/pyroelectric layer, and a cover layer disposed upon the outer metal layer. The power-generating laminate forms a gas-impervious envelope to maintain lifting gas and air therein, and is configured such that when the envelope is subjected to structural strain or experiences changes in temperature, power is generated, which is used to supply power to the various electrical systems aboard the airship.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: February 1, 2011
    Assignee: Lockheed Martin Corporation
    Inventor: Paul E. Liggett
  • Patent number: 7875795
    Abstract: An energy generating device for lighter-than-air vehicles having a gas impervious outer flexible fabric including a flexible photovoltaic array located on the outer layer of the gas impervious fabric; a thermocouple array located between the photovoltaic cells and the gas impervious fabric; a thermally conductive layer or heat spreader between the thermocouple array and the photovoltaic array and between the thermocouple array and the gas impervious flexible fabric; an electrically conductive means connected to said thermocouple array for drawing electrical power away from said thermocouple array; and an electrical load, such as an electrical storage device or a device that consumes electricity, for drawing electricity from the thermocouple array.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: January 25, 2011
    Assignee: Lockheed Martin Corporation
    Inventor: Paul E. Liggett
  • Publication number: 20100326182
    Abstract: A method for producing a missile nose cone is disclosed. The method consists of manufacturing a first missile nose cone from a first lot of polymeric material and determining a first rupture value. The method further consists of manufacturing a second missile nose cone from a second lot of polymeric material and determining a second rupture value of the second missile nose cone. Both first and second lots of material are mixed into a test batch with one another based on their associated rupture values. An evaluation missile nose cone is then manufactured from the test batch and a determination is made as to whether the evaluation missile nose cone has a desired rupture value. If a desired rupture value is not obtained, then the mixing and evaluation steps are repeated.
    Type: Application
    Filed: June 25, 2009
    Publication date: December 30, 2010
    Inventors: Robert A. Shulter, Margaret Rose Manning, Paul A. Leitch, Paul E. Liggett
  • Publication number: 20100227984
    Abstract: Rigid-rod polymer fiber filaments, such as poly (p-phenylenebenzobisoxazole) (PBO), having improved retention of physical properties are prepared by preparing a polymer solution and extruding that solution to form a filament, and then treating that filament with water, base solution, and water. The treated filament may be further heat-treated, or further treated with water. The treated filaments are less susceptible to the degradation caused by heat, humidity, and UV radiation.
    Type: Application
    Filed: March 5, 2009
    Publication date: September 9, 2010
    Inventors: Thuy DANG, Paul E. Liggett, Dhiraj H. Darjee, Daniel H. Jones, James I. Mascolino
  • Patent number: 7790261
    Abstract: A splice seam for joining various sections of fabric together is disclosed, wherein the fabric sections are initially delaminated into their constituent plies. The plies associated with each fabric section are then interleaved with each other, and bonded together. The amount of surface area between each interleaved plies can be adjusted as so as to achieve a desired level of load carrying strength between the fabric sections. Additionally, the splice seam may utilize an external and/or internal seam tape to increase the strength of the resultant seam.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: September 7, 2010
    Assignee: Lockheed Martin Corporation
    Inventor: Paul E. Liggett
  • Publication number: 20100143635
    Abstract: A splice seam for joining various sections of fabric together is disclosed, wherein the fabric sections are initially delaminated into their constituent plies. The plies associated with each fabric section are then interleaved with each other, and bonded together. The amount of surface area between each interleaved plies can be adjusted as so as to achieve a desired level of load carrying strength between the fabric sections. Additionally, the splice seam may utilize an external and/or internal seam tape to increase the strength of the resultant seam.
    Type: Application
    Filed: February 12, 2010
    Publication date: June 10, 2010
    Inventor: Paul E. Liggett
  • Patent number: 7687129
    Abstract: A splice seam for joining various sections of fabric together is disclosed, wherein the fabric sections are initially delaminated into their constituent plies. The plies associated with each fabric section are then interleaved with each other, and bonded together. The amount of surface area between each interleaved plies can be adjusted as so as to achieve a desired level of load carrying strength between the fabric sections. Additionally, the splice seam may utilize an external and/or internal seam tape to increase the strength of the resultant seam.
    Type: Grant
    Filed: January 8, 2007
    Date of Patent: March 30, 2010
    Assignee: Lockheed Martin Corporation
    Inventor: Paul E. Liggett
  • Publication number: 20100055372
    Abstract: A splice seam for joining various sections of fabric together is disclosed, wherein the fabric sections are initially delaminated into their constituent plies. The plies associated with each fabric section are then fully interleaved with each other, and bonded together. The amount of surface area between each interleaved plies can be adjusted as so as to achieve a desired level of load carrying strength between the fabric sections.
    Type: Application
    Filed: November 13, 2009
    Publication date: March 4, 2010
    Inventor: Paul E. LIGGETT
  • Publication number: 20090263633
    Abstract: Various laminate structures and methods of making laminate structures are provided. In one embodiment, a laminate structure includes a base layer, a metallized layer comprising an electronic/embedded device which is adhered to the base layer. A coating layer which is adhered to the conductive layer, and a non-metallic dichroic layer adhered to the coating layer. In another embodiment, the non-metallic dichroic layer directly contacts the electronic/embedded devices of the conductive layer. The laminate structures herein can be used in the hull of the air vehicles to communicate with satellites and ground based receiving stations, for example. The electronic/embedded devices of the laminate structures provide a low weight solution to transmitting and receiving data within an air vehicle.
    Type: Application
    Filed: April 18, 2008
    Publication date: October 22, 2009
    Applicant: LOCKHEED MARTIN CORPORATION
    Inventors: Paul E. LIGGETT, Thomas M. WHITELEATHER
  • Publication number: 20090220740
    Abstract: The present invention is generally directed to tapes or laminates designed for use in conjunction with lighter-than-air vehicles, platforms or other inflated structures. In one embodiment, the present invention is directed to tapes or laminates designed for use in logos and/or identification numbers that can be, for example, used on a lighter-than-air vehicle, platform or other inflated structure. In another embodiment, the present invention is directed to tapes or laminates that include, among other layers, at least one dichroic layer designed to produce a logo, letter and/or number that can be, for example, used on a lighter-than-air vehicle, platform or other inflated.
    Type: Application
    Filed: February 29, 2008
    Publication date: September 3, 2009
    Applicant: LOCKHEED MARTIN CORPORATION
    Inventor: Paul E. LIGGETT
  • Publication number: 20090217962
    Abstract: An energy generating device for lighter-than-air vehicles having a gas impervious outer flexible fabric including a flexible photovoltaic array located on the outer layer of the gas impervious fabric; a thermocouple array located between the photovoltaic cells and the gas impervious fabric; a thermally conductive layer or heat spreader between the thermocouple array and the photovoltaic array and between the thermocouple array and the gas impervious flexible fabric; an electrically conductive means connected to said thermocouple array for drawing electrical power away from said thermocouple array; and an electrical load, such as an electrical storage device or a device that consumes electricity, for drawing electricity from the thermocouple array.
    Type: Application
    Filed: February 29, 2008
    Publication date: September 3, 2009
    Applicant: LOCKHEED MARTIN CORPORATION
    Inventor: Paul E. Liggett
  • Publication number: 20090220726
    Abstract: The present invention is generally directed to tapes designed for use in conjunction with lighter-than-air vehicles, platforms or other inflated structures. In one embodiment, the present invention is directed to conductive seam cover tape that can be, for example, used to protect and/or cover one or more seams in a lighter-than-air vehicle, platform or other inflated structure. In another embodiment, the present invention is directed to a conductive seam cover tape that can be, for example, used to protect and/or cover fabric panels or sections that are used to form lighter-than-air vehicles, platforms or other inflated structures that are in, one instance, designed for deployment at high altitudes.
    Type: Application
    Filed: February 29, 2008
    Publication date: September 3, 2009
    Applicant: LOCKHEED MARTIN CORPORATION
    Inventors: Paul E. Liggett, Steven L. Sinsabaugh, James I. Mascolino