Patents by Inventor Gordon L. McGregor
Gordon L. McGregor 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: 20080289780Abstract: The present invention is an insect screen with improved durability designed to serve the primary purpose of keeping out very small insects and pests while maximizing visual clarity, light transmission, and airflow. The insect screen is free from macroscopic permanent deformation when subjected to a blunt instrument deformation test of at least 5 lbs. and has a total light transmission of at least 65%. The inventive insect screen comprises fibers in a warp and fill construction which define openings having a warp dimension and a fill dimension, both of said warp and fill dimensions being equal to or less than about 0.06 inches and equal to or larger than about 0.01 inches, the fibers having a diameter less than about 0.007 inches.Type: ApplicationFiled: August 7, 2008Publication date: November 27, 2008Inventors: Gordon L. McGregor, Thomas R. Bugg, David J. Welch
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Publication number: 20040203303Abstract: The present invention is an insect screen with improved durability designed to serve the primary purpose of keeping out very small insects and pests while maximizing visual clarity, light transmission, and airflow. The insect screen is free from macroscopic permanent deformation when subjected to a blunt instrument deformation test of at least 5 lbs. and has a total light transmission of at least 65%. The inventive insect screen comprises fibers in a warp and fill construction which define openings having a warp dimension and a fill dimension, both of said warp and fill dimensions being equal to or less than about 0.06 inches and equal to or larger than about 0.01 inches, the fibers having a diameter less than about 0.007 inches.Type: ApplicationFiled: February 13, 2004Publication date: October 14, 2004Inventors: Gordon L. McGregor, Thomas R. Bugg, David J. Welch
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Publication number: 20040198115Abstract: An insect screen comprising fibers in a warp and fill construction defining openings having a warp dimension and a fill dimension, at least one of the warp and fill dimensions being less than about 0.05 inches and the other of the warp and fill dimensions being larger than about 0.03 inches, the fibers having a diameter of equal to or less than about 0.007 inches. The present invention is an improved insect screen designed to serve the primary purpose of keeping out insects and pests while maximizing visual clarity, light transmission, and airflow.Type: ApplicationFiled: March 31, 2003Publication date: October 7, 2004Inventors: Gordon L. McGregor, Thomas R. Bugg, Thomas P. Kelmartin, Raymond B. Minor, Raymond M. Wnenchak, Thomas B. Schmiedel
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Publication number: 20040192129Abstract: An insect screen made from fibers in a warp and fill construction defining openings having a warp dimension and a fill dimension, both of said warp and fill dimensions being equal to or less than about 0.04 inches and equal to or larger than about 0.01 inches, said fibers having a diameter of equal to or greater than about 0.002 inches and less than about 0.007 inches. The present invention is an improved insect screen designed to serve the primary purpose of keeping out very small insects and pests while maximizing visual clarity, light transmission, and airflow.Type: ApplicationFiled: September 30, 2003Publication date: September 30, 2004Inventors: Gordon L. McGregor, Thomas R. Bugg, David J. Welch
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Patent number: 6089576Abstract: The present invention is an improved gasket for use in a wide variety of sealing applications. The gasket comprises a sheet of expanded polytetrafluoroethylene (PTFE) that is helically wrapped around itself and sealed in that orientation. This construction produces a gasket that has significant tensile strength in both its longitudinal and transverse axes. As such, the gasket of the present invention retains all of the operational advantages of PTFE while being quite resistant to creep.Type: GrantFiled: June 17, 1996Date of Patent: July 18, 2000Assignee: W. L. Gore & Associates, Inc.Inventors: Donald L. Hollenbaugh, Jr., Gordon L. McGregor, Raymond B. Minor
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Patent number: 6015610Abstract: The present invention provides and employs a very thin yet highly light reflective material for use in providing diffuse reflectivity of light, especially in tightly confined applications such as in laptop computer displays. The present invention uses an expanded polytetrafluoroethylene (PTFE) comprising a microstructure of polymeric nodes and fibrils combined with a coating or filler of material having a high index of refraction, such as titanium dioxide. The material of the present invention demonstrates exceptional diffuse reflectivity across a wide spectrum of visible and infrared light. Additionally, the material of the present invention provides many properties that have been previously unavailable in thin, highly diffuse reflective material, including a high degree of malleability, moldability and flexibility, and effective reflectivity even at very thin cross-sections.Type: GrantFiled: November 14, 1997Date of Patent: January 18, 2000Assignee: W. L. Gore & Associates, Inc.Inventors: Raymond B. Minor, Gordon L. McGregor, Huey Shen Wu, Daniel J. Lash
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Patent number: 5982542Abstract: The present invention is an improved material and method for use for providing diffuse transflectance of light. By employing an expanded polytetrafluoroethylene (PTFE) comprising a microstructure of polymeric nodes and fibrils, the material of the present invention demonstrates exceptional diffuse reflectivity and transmission of light across a wide spectrum of ultraviolet, visible, and infrared light. Additionally, the material of the present invention provides many properties that have been previously unavailable in highly diffuse transflective material, including a high degree of malleability, moldability and flexibility, and effective reflectivity even at relatively thin cross-sections.Type: GrantFiled: August 12, 1997Date of Patent: November 9, 1999Assignee: W. L. Gore & Associates, Inc.Inventors: Gregory E. Hannon, Gordon L. McGregor, Raymond B. Minor
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Patent number: 5982548Abstract: The present invention is an improved material and method for use for providing diffuse reflectivity of light. It has been determined that by employing a polymer having an index of refraction of greater than or equal to 1.42 and a porosity of greater than 10%, improved reflectivity can be achieved over existing reflectant materials having only one of these properties. Suitable materials for use in the present invention include nylon, polyvinylidene (PVDF), and cellulose acetate.Type: GrantFiled: May 19, 1997Date of Patent: November 9, 1999Assignee: W. L. Gore & Associates, Inc.Inventors: Gordon L. McGregor, Raymond B. Minor
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Patent number: 5916671Abstract: An improved gasket particularly suitable for use in sensitive environments is disclosed. The preferred gasket of the present invention comprises at least one layer of a composite material of porous polytetrafluoroethylene (PTFE) polymer and resilient expandable microspheres. The composite material provides a number of significant advantages over existing PTFE and similar clean gaskets, including better seal under less compressive pressure, sufficient resilience to permit reuse, and retained porosity--allowing pressure equalization in the equipment to occur through the gasket itself.Type: GrantFiled: February 18, 1997Date of Patent: June 29, 1999Assignee: W. L. Gore & Associates, Inc.Inventors: Edwin G. Dauber, Daniel E. Hubis, Gordon L. McGregor, Raymond B. Minor, William P. Mortimer, Jr.
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Patent number: 5905594Abstract: The present invention is an improved reflector for use in a compact fluorescent lamp (CFL) luminaire and a luminaire incorporating such a reflector. The present invention achieves significantly improved light output from a CFL by employing a reflector of expanded polytetrafluoroethylene. Not only is light output improved over presently employed CFL luminaire reflectors, providing more light and/or allowing for less energy usage, but the luminaire of the present invention also produces a more pleasing light output.Type: GrantFiled: September 10, 1996Date of Patent: May 18, 1999Assignee: W. L. Gore & Associates, Inc.Inventors: Gordon L. McGregor, Raymond B. Minor, Gregory E. Hannon
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Patent number: 5892621Abstract: The present invention relates to surfaces used to reflect light, and particularly to highly light reflectant surfaces that provide even diffusion of light for the purpose of maximizing light efficiency and/or uniformity in a luminaire. By employing an expanded polytetrafluoroethylene (PTFE) comprising a microstructure of polymeric nodes and fibrils, the material of the present invention demonstrates exceptional diffuse reflectivity across a wide spectrum of visible light. Additionally, the material of the present invention provides many properties that have been previously unavailable in highly diffuse reflective material, including a high degree of malleability, moldability and flexibility, and effective reflectivity even at relatively thin cross-sections.Type: GrantFiled: April 10, 1996Date of Patent: April 6, 1999Assignee: W. L. Gore & Associates, Inc.Inventors: Gordon L. McGregor, Raymond B. Minor, Gregory E. Hannon
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Patent number: 5838406Abstract: The present invention is an improved material and method for use for providing diffuse reflectivity of light in backlighted visual displays, such as liquid crystal displays (LCD) employed in a wide variety of applications. By employing an expanded polytetrafluoroethylene (PTFE) comprising a microstructure of polymeric nodes and fibrils, the material of the present invention demonstrates exceptional diffuse reflectivity across a wide spectrum of visible light. Additionally, the material of the present invention provides many properties that have been previously unavailable in highly diffuse reflective material, including a high degree of malleability, moldability and flexibility, and effective reflectivity even at relatively thin cross-sections.Type: GrantFiled: August 29, 1995Date of Patent: November 17, 1998Assignee: W. L. Gore & Associates, Inc.Inventors: Gordon L. McGregor, Raymond B. Minor, Gregory E. Hannon
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Patent number: 5836677Abstract: A retrofit recessed compact fluorescent lamp (CFL) system that delivers quality aesthetics, glare control, and high efficiency light output. The system comprises a reflector unit adapted to be installed into an existing light fixture to provide an improved environment for distribution of light from a CFL. The system is compatible with a range of existing light fixture heights and styles.Type: GrantFiled: February 5, 1997Date of Patent: November 17, 1998Assignee: W.L. Gore & Associates, Inc.Inventors: William T. Connors, Gordon L. McGregor, Raymond B. Minor
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Patent number: 5781342Abstract: The present invention is an improved material and method for use for providing diffuse transflectance of light. By employing an expanded polytetrafluoroethylene (PTFE) comprising a microstructure of polymeric nodes and fibrils, the material of the present invention demonstrates exceptional diffuse reflectivity and transmission of light across a wide spectrum of ultraviolet, visible, and infrared light. Additionally, the material of the present invention provides many properties that have been previously unavailable in highly diffuse transflective material, including a high degree of malleability, moldability and flexibility, and effective reflectivity even at relatively thin cross-sections.Type: GrantFiled: November 27, 1995Date of Patent: July 14, 1998Assignee: W.L. Gore & Associates, Inc.Inventors: Gregory E. Hannon, Gordon L. McGregor, Raymond B. Minor
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Patent number: 5750931Abstract: Improved insulative cable assemblies and methods for producing them are disclosed. The insulative cable assemblies have a conductor housed within a polymeric insulation layer expanded with expandable thermoplastic microspheres. The use of a relatively inelastic outside sheath controls the expansion of the insulative layer and assures a snug fit between the insulation and the conductor. The insulation layer is highly resilient and resistant to dielectric changes due to compression or damage from mechanical manipulation of the cable. Additionally, the ability to expand the insulative layer after cable assembly is completed provides far greater freedom in cable processing without compromising low dielectric constant.Type: GrantFiled: June 1, 1995Date of Patent: May 12, 1998Assignee: W. L. Gore & Associates, Inc.Inventors: Gordon L. McGregor, Raymond B. Minor, William Hardie, Michael Kennedy
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Patent number: 5689364Abstract: Improved material and method for reflecting light in a photoinduction chamber is provided. The material comprises one or more layers of expanded polytetrafluoroethylene (ePTFE) membrane. Employing an ePTFE membrane as a reflective surfaces is demonstrated as providing excellent diffuse reflective properties, especially in the ultraviolet and visible ranges of light. Additionally, the material of the present invention has many other properties that make it particularly desirable for use in various photoinduction chamber applications, including inertness, flexibility, ease in shaping and installation, etc.Type: GrantFiled: December 6, 1995Date of Patent: November 18, 1997Assignee: W.L. Gore & Associates, Inc.Inventors: Gordon L. McGregor, Raymond B. Minor, Gregory E. Hannon, Robert Lyon Henn
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Patent number: 5635124Abstract: The present invention is an expanded polytetrafluoroethylene (PTFE) fiber with improved handling properties. Unlike previous expanded PTFE fibers, the fiber of the present invention employs a fiber of increased thickness so that the fiber is maintained in an unfolded orientation. The improved processing steps of the present invention create a fiber that has a number of improved properties, including more uniform dimensions along its length, improved compressibility and handling, and when woven into a fabric, the fabric is more easily processed, is of higher quality, and is more uniform.Type: GrantFiled: June 1, 1995Date of Patent: June 3, 1997Assignee: W. L. Gore & Associates, Inc.Inventors: Brad F. Abrams, Raymond B. Minor, Gordon L. McGregor, John W. Dolan
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Patent number: 5596450Abstract: The present invention is an improved material and method for use for providing diffuse reflectivity of light. By employing an expanded polytetrafluoroethylene (PTFE) comprising a microstructure of polymeric nodes and fibrils, the material of the present invention demonstrates exceptional diffuse reflectivity across a wide spectrum of visible and infrared light. Additionally, the material of the present invention provides many properties that have been previously unavailable in highly diffuse reflective material, including a high degree of malleability, moldability and flexibility, and effective reflectivity even at relatively thin cross-sections.Type: GrantFiled: January 6, 1995Date of Patent: January 21, 1997Assignee: W. L. Gore & Associates, Inc.Inventors: Gregory E. Hannon, Gordon L. McGregor, Raymond B. Minor
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Patent number: 5591526Abstract: The present invention is an expanded polytetrafluoroethylene (PTFE) fiber with improved handling properties. Unlike previous expanded PTFE fibers, the fiber of the present invention employs a fiber of increased thickness so that the fiber is maintained in an unfolded orientation. The improved processing steps of the present invention create a fiber that has a number of improved properties, including more uniform dimensions along its length, improved compressibility and handling, and when woven into a fabric, the fabric is more easily processed, is of higher quality, and is more uniform.Type: GrantFiled: June 15, 1994Date of Patent: January 7, 1997Assignee: W. L. Gore & Associates, IncInventors: Brad F. Abrams, Raymond B. Minor, Gordon L. McGregor, John W. Dolan
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Patent number: 5581019Abstract: An improved insertable member is provided suitable for use as a seal monitoring gasket. In one embodiment, the insertable member employs an embedded electrically conductive element responsive to stresses placed upon it. When fatigue or a break occurs along the member body, changes in the electrical transmission properties of the conductive element provides data warning of changes or risks to the seal between component parts. The insertable member can include different conductive elements providing changes in signal from a variety of stresses which may be placed upon it, including tension, pressure, and/or temperature. Additionally, by forming the insertable member and/or the conductive element from material which will undergo changes in electrical properties upon compression, the insertable member can also provide feedback of the amount of constriction between component parts for proper installation and maintenance.Type: GrantFiled: August 23, 1993Date of Patent: December 3, 1996Assignee: W. L. Gore & Associates, Inc.Inventors: Raymond B. Minor, Gordon L. McGregor, Anders B. R. Karlstrom