Patents by Inventor Douglas A. Simpson

Douglas A. Simpson 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: 6833532
    Abstract: A method and system for fusing an optical fiber lens is compatible with automation. Specifically, the fusing of the fiber lens is controlled in response to a diffraction pattern of light exiting from the fiber lens. This diffraction pattern is indicative of the lens shape and characteristics. Specifically, light is injected into an optical fiber and a diffraction pattern of the light exiting from a fiber lens is detected. The fiber lens is then fused in response to this diffraction pattern.
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: December 21, 2004
    Assignee: Axsun Technologies, Inc.
    Inventors: Dale C. Flanders, Jonathan R. Coppeta, Douglas A. Simpson
  • Publication number: 20040238517
    Abstract: A method and system for fusing an optical fiber lens is compatible with automation. Specifically, the fusing of the fiber lens is controlled in response to a diffraction pattern of light exiting from the fiber lens. This diffraction pattern is indicative of the lens shape and characteristics. Specifically, light is injected into an optical fiber and a diffraction pattern of the light exiting from a fiber lens is detected. The fiber lens is then fused in response to this diffraction pattern.
    Type: Application
    Filed: January 11, 2001
    Publication date: December 2, 2004
    Inventors: Dale C. Flanders, Jonathan R. Coppeta, Douglas A. Simpson
  • Patent number: 6427812
    Abstract: A valve regulates fluid displacement in a damper assembly, for example, displacement of hydraulic fluid in a sealed shock absorber. The valve is placed between a portion of fluid at one pressure and regulates the passage of fluid through an aperture or passage to a portion of fluid at a lower pressure by a blocking member which moves to obstruct the aperture in accordance with a desired level of damping. The blocking member is, or is driven by, an electroactive device, such as a bimorph actuator formed of ferroelectric material.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: August 6, 2002
    Assignee: Active Control eXperts, Inc.
    Inventors: Edward F. Crawley, Kenneth B. Lazarus, Jeffrey W. Moore, Douglas A. Simpson, Gerald F. Caron, Farla M. Russo
  • Publication number: 20010025752
    Abstract: A valve regulates fluid displacement in a damper assembly, for example, displacement of hydraulic fluid in a sealed shock absorber. The valve is placed between a portion of fluid at one pressure and regulates the passage of fluid through an aperture or passage to a portion of fluid at a lower pressure by a blocking member which moves to obstruct the aperture in accordance with a desired level of damping. The blocking member is, or is driven by, an electroactive device, such as a bimorph actuator formed of ferroelectric material. In one embodiment, the blocking member is a bimorph which covers the aperture, and is flexibly displaced by passage of pressurized fluid through the aperture. A controller provides an electrical actuation signal to move the bimorph toward or away from the aperture, augmenting or decreasing its closing bias to affect both the threshold flow initiation pressure and the rate of flow once the passage opens.
    Type: Application
    Filed: January 23, 2001
    Publication date: October 4, 2001
    Inventors: Edward F. Crawley, Kenneth B. Lazarus, Jeffrey W. Moore, Douglas A. Simpson, Gerald F. Caron, Farla M. Russo
  • Patent number: 6193029
    Abstract: A valve regulates fluid displacement in a damper assembly, for example, displacement of hydraulic fluid in a sealed shock absorber. The valve is placed between a portion of fluid at one pressure and regulates the passage of fluid through an aperture or passage to a portion of fluid at a lower pressure by a blocking member which moves to obstruct the aperture in accordance with a desired level of damping. The blocking member is, or is driven by, an electroactive device, such as a bimorph actuator formed of ferroelectric material. In one embodiment, the blocking member is a bimorph which covers the aperture, and is flexibly displaced by passage of pressurized fluid through the aperture. A controller provides an electrical actuation signal to move the bimorph toward or away from the aperture, augmenting or decreasing its closing bias to affect both the threshold flow initiation pressure and the rate of flow once the passage opens.
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: February 27, 2001
    Assignee: Active Control eXperts, Inc.
    Inventors: Edward F. Crawley, Kenneth B. Lazarus, Jeffrey W. Moore, Douglas A. Simpson, Gerald F. Caron, Farla M. Russo