Patents by Inventor Douglas McGregor

Douglas 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).

  • Patent number: 7648162
    Abstract: A tubular gas guide element for a side curtain airbag for guiding gas coming from a gas generator comprising at least two layers of fabric. With the use of such a gas guide, thrust of the gas inflowing into an airbag can be balanced.
    Type: Grant
    Filed: September 4, 2007
    Date of Patent: January 19, 2010
    Assignee: Autoliv Development AB
    Inventors: Matthew Brough, Douglas McGregor, Hakan Jaconelli, Alan Bradburn
  • Publication number: 20080224457
    Abstract: A tubular gas guide element for a side curtain airbag for guiding gas coming from a gas generator comprising at least two layers of fabric. With the use of such a gas guide, thrust of the gas inflowing into an airbag can be balanced.
    Type: Application
    Filed: September 4, 2007
    Publication date: September 18, 2008
    Applicant: Autoliv Development AB
    Inventors: Matthew Brough, Douglas McGregor, Hakan Janconelli, Alan Bradburn
  • Publication number: 20070018110
    Abstract: Micro neutron detectors include relatively small pockets of gas including a neutron reactive material. During use, under a voltage bias in a neutron environment, neutron interactions in the neutron reactive material are seen to occur. Ultimately, electron-ion pairs form and positive ions drift to a cathode and electrons to the anode. The motion of charges then produces an induced current that is sensed and measurable, thereby indicating the presence of neutrons. Preferred pocket volumes range from a few cubic microns to about 1200 mm3; neutron reactive materials include fissionable, fertile or fissile material (or combinations), such as 235U, 238U, 233U, 232Th, 239Pu, 10B, 6Li and 6LiF; gasses include one or more of argon, P-10, 3He, BF3, BF3, CO2, Xe, C4H10, CH4, C2H6, CF4, C3H8, dimethyl ether, C3H6 and C3H8. Arrangements include two- and three-piece sections, arrays (including or not triads capable of performing multiple detecting functions) and/or capillary channels.
    Type: Application
    Filed: July 28, 2005
    Publication date: January 25, 2007
    Inventors: Douglas McGregor, Martin Ohmes, John Shultis
  • Publication number: 20060291606
    Abstract: Micro neutron detectors include relatively small pockets of gas including a neutron reactive material. During use, under a voltage bias in a neutron environment, neutron interactions in the neutron reactive material are seen to occur. Ultimately, electron-ion pairs form and positive ions drift to a cathode and electrons to the anode. The motion of charges then produces an induced current that is sensed and measurable, thereby indicating the presence of neutrons. Preferred pocket volumes range from a few cubic microns to about 1200 mm3; neutron reactive materials include fissionable, fertile or fissile material (or combinations), such as 235U, 238U, 233U, 232Th, 239Pu, 10B, 6Li and 6LiF; gasses include one or more of argon, P-10, 3He, BF3, BF3, CO2, Xe, C4H10, CH4, C2H6, CF4, C3H8, dimethyl ether, C3H6 and C3H8. Arrangements include two- and three-piece sections, arrays (including or not triads capable of performing multiple detecting functions) and/or capillary channels.
    Type: Application
    Filed: July 28, 2005
    Publication date: December 28, 2006
    Inventors: Douglas McGregor, Martin Ohmes, John Shultis
  • Publication number: 20060056573
    Abstract: Micro neutron detectors include relatively small pockets of gas including a neutron reactive material. During use, under a voltage bias in a neutron environment, neutron interactions in the neutron reactive material are seen to occur. Ultimately, electron-ion pairs form and positive ions drift to a cathode and electrons to the anode. The motion of charges then produces an induced current that is sensed and measurable, thereby indicating the presence of neutrons. Preferred pocket volumes range from a few cubic microns to about 1200 mm3; neutron reactive materials include fissionable, fertile or fissile material (or combinations), such as 235U, 238U, 233U, 232Th, 239Pu, 10B, 6Li and 6LiF; gasses include one or more of argon, P-10, 3He, BF3, BF3, CO2, Xe, C4H10, CH4, C2H6, CF4, C3H8, dimethyl ether, C3H6 and C3H8. Arrangements include two- and three-piece sections, arrays (including or not triads capable of performing multiple detecting functions) and/or capillary channels.
    Type: Application
    Filed: July 28, 2005
    Publication date: March 16, 2006
    Inventors: Douglas McGregor, Martin Ohmes, John Shultis
  • Publication number: 20060043308
    Abstract: Micro neutron detectors include relatively small pockets of gas including a neutron reactive material. During use, under a voltage bias in a neutron environment, neutron interactions in the neutron reactive material are seen to occur. Ultimately, electron-ion pairs form and positive ions drift to a cathode and electrons to the anode. The motion of charges then produces an induced current that is sensed and measurable, thereby indicating the presence of neutrons. Preferred pocket volumes range from a few cubic microns to about 1200 mm3; neutron reactive materials include fissionable, fertile or fissile material (or combinations), such as 235U, 238U, 233U, 232Th, 239Pu, 10B, 6Li and 6LiF; gasses include one or more of argon, P-10, 3He, BF3, BF3, CO2, Xe, C4H10, CH4, C2H6, CF4, C3H8, dimethyl ether, C3H6 and C3H8. Arrangements include two- and three-piece sections, arrays (including or not triads capable of performing multiple detecting functions) and/or capillary channels.
    Type: Application
    Filed: July 28, 2005
    Publication date: March 2, 2006
    Inventors: Douglas Mcgregor, Martin Ohmes, John Shultis
  • Publication number: 20060023828
    Abstract: Micro neutron detectors include relatively small pockets of gas including a neutron reactive material. During use, under a voltage bias in a neutron environment, neutron interactions in the neutron reactive material are seen to occur. Ultimately, electron-ion pairs form and positive ions drift to a cathode and electrons to the anode. The motion of charges then produces an induced current that is sensed and measurable, thereby indicating the presence of neutrons. Preferred pocket volumes range from a few cubic microns to about 1200 mm3; neutron reactive materials include fissionable, fertile or fissile material (or combinations), such as 235U, 238U, 233U, 232Th, 239Pu, 10B, 6Li and 6LiF; gasses include one or more of argon, P-10, 3He, BF3, BF3, CO2, Xe, C4H10, CH4, C2H6, CF4, C3H8, dimethyl ether, C3H6 and C3H8. Arrangements include two- and three-piece sections, arrays (including or not triads capable of performing multiple detecting functions) and/or capillary channels.
    Type: Application
    Filed: July 28, 2005
    Publication date: February 2, 2006
    Inventors: Douglas McGregor, Martin Ohmes, John Shultis
  • Publication number: 20050258372
    Abstract: Neutron detectors, advanced detector process techniques and advanced compound film designs have greatly increased neutron-detection efficiency. One embodiment of the detectors utilizes a semiconductor wafer with a matrix of spaced cavities filled with one or more types of neutron reactive material such as 10B or 6LiF. The cavities are etched into both the front and back surfaces of the device such that the cavities from one side surround the cavities from the other side. The cavities may be etched via holes or etched slots or trenches. In another embodiment, the cavities are different-sized and the smaller cavities extend into the wafer from the lower surfaces of the larger cavities. In a third embodiment, multiple layers of different neutron-responsive material are formed on one or more sides of the wafer. The new devices operate at room temperature, are compact, rugged, and reliable in design.
    Type: Application
    Filed: October 29, 2003
    Publication date: November 24, 2005
    Inventors: Douglas McGregor, Raymond Klann
  • Publication number: 20050017181
    Abstract: A high-speed, three-dimensional, gamma-ray imaging method and system as well as a detector and array of such detectors for use therein are provided which characterize radioactivity distributions in nuclear and radioactive waste and materials facilities by superimposing radiation images on a view of the environment using see-through display screens or shields to provide a stereoscopic view of the radiation. The method and system provide real-time visual feedback about the locations and relative strengths of radioactive sources. The method and system dynamically provide continuous updates to the displayed image illustrating changes, such as source movement. A pair of spaced gamma-ray cameras of a detector subsystem function like “gamma eyes”. A pair of CCD cameras may be coupled to the detector subsystem to obtain information about the physical architecture of the environment. A motion tracking subsystem is used to generate information on the user's position and head orientation to determine what a user “sees”.
    Type: Application
    Filed: August 19, 2004
    Publication date: January 27, 2005
    Applicant: The Regents of the University of Michigan
    Inventors: Kimberlee Kearfott, Douglas McGregor
  • Patent number: 6545281
    Abstract: The detection efficiency, or sensitivity, of a neutron detector material such as of Si, SiC, amorphous Si, GaAs, or diamond is substantially increased by forming one or more cavities, or holes, in its surface. A neutron reactive material such as of elemental, or any compound of, 10B, 6Li, 6LiF, U, or Gd is deposited on the surface of the detector material so as to be disposed within the cavities therein. The portions of the neutron reactive material extending into the detector material substantially increase the probability of an energetic neutron reaction product in the form of a charged particle being directed into and detected by the neutron detector material.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: April 8, 2003
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Douglas McGregor, Raymond Klann