Patents by Inventor Leslie R. Smith

Leslie R. Smith 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: 8125095
    Abstract: An input shaft rotates at variable rotation rates and is driven by a variable speed source of energy or power such as by the propeller of a wind-driven electrical generator. The input shaft is connected to a first rotor which electromagnetically interacts with a second rotor to create a torque to cause the second rotor to rotate. The interaction of the first rotor and the second rotor may be varied electrically to vary the torque and in turn the rotation rate of the second rotor. The second rotor interacts with a stator to produce AC electrical power. The rotation rate of the second rotor is controlled so that the generator supplies AC power at an essentially constant frequency.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: February 28, 2012
    Inventors: Christopher K. Duffey, Leslie R. Smith
  • Patent number: 7851933
    Abstract: An input shaft rotates at variable rotation rates and is driven by a variable source of energy or power such as by the propeller of a wind-driven electrical generator. The input shaft is connected to a clutch which is connected to an output shaft and which is operable to rotate the output shaft at a preselected or constant rotation rate. The clutch has a first rotor which electromagnetically interacts with a second rotor to create a torque to cause the second rotor to rotate. The interaction of the first rotor and the second rotor may be varied electrically or mechanically to vary the torque and in turn the rotation rate of the second shaft. The shaft is preferably connected to a synchronous generator; and the rotation rate of the output shaft is controlled so that the generator supplies power at an essentially constant rotation rate.
    Type: Grant
    Filed: March 15, 2007
    Date of Patent: December 14, 2010
    Inventors: Christopher K. Duffey, Leslie R. Smith
  • Publication number: 20090315329
    Abstract: An input shaft rotates at variable rotation rates and is driven by a variable speed source of energy or power such as by the propeller of a wind-driven electrical generator. The input shaft is connected to a first rotor which electromagnetically interacts with a second rotor to create a torque to cause the second rotor to rotate. The interaction of the first rotor and the second rotor may be varied electrically to vary the torque and in turn the rotation rate of the second rotor. The second rotor interacts with a stator to produce AC electrical power. The rotation rate of the second rotor is controlled so that the generator supplies AC power at an essentially constant frequency.
    Type: Application
    Filed: June 18, 2009
    Publication date: December 24, 2009
    Inventors: Christopher K. Duffey, Leslie R. Smith
  • Publication number: 20080223684
    Abstract: An input shaft rotates at variable rotation rates and is driven by a variable source of energy or power such as by the propeller of a wind-driven electrical generator. The input shaft is connected to a clutch which is connected to an output shaft and which is operable to rotate the output shaft at a preselected or constant rotation rate. The clutch has a first rotor which electromagnetically interacts with a second rotor to create a torque to cause the second rotor to rotate. The interaction of the first rotor and the second rotor may be varied electrically or mechanically to vary the torque and in turn the rotation rate of the second shaft. The shaft is preferably connected to a synchronous generator; and the rotation rate of the output shaft is controlled so that the generator supplies power at an essentially constant rotation rate.
    Type: Application
    Filed: March 15, 2007
    Publication date: September 18, 2008
    Inventors: Christopher K. Duffey, Leslie R. Smith
  • Patent number: 6461309
    Abstract: A process of determining the presence of an abnormal condition within the body of a non-human female with a probe which contains a first conductive helical surface and a second conductive helical surface. In this process, the probe is abraded until its conductive helical surfaces are substantially free of oxidation products. Thereafter the probe is sterilized, the first helical surface is charged with a negative polarity, the second helical surface is charged with a positive polarity, and the probe is inserted into a non-human female's vagina to stimulate the the flow of mucous. The resistance between the first and second helical surfaces is measured, and from this measurement is calculated the conductivity of the mucous within the non-human female's vagina. This process is repeated several times over a period of time determine whether the mucous conductivity pattern of such period of time is within normal bounds.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: October 8, 2002
    Assignee: Probe Diagnostics, Inc.
    Inventor: Leslie R. Smith
  • Patent number: 6461308
    Abstract: A process of determining the presence of an abnormal condition within the body of a human female with a probe which contains a first conductive helical surface and a second conductive helical surface. In this process, the probe is abraded until its conductive helical surfaces are substantially free of oxidation products. Thereafter the probe is sterilized, the first helical surface is charged with a negative polarity, the second helical surface is charged with a positive polarity, and the probe is inserted into a human female's vagina to stimulate the flow of mucous. The resistance between the first and second helical surfaces is measured, and from this measurement is calculated the conductivity of the mucous within the female's vagina. This process is repeated several times over a period of time determine whether the mucous conductivity pattern of such period of time is within normal bounds.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: October 8, 2002
    Assignee: Probe Diagnostics, Inc.
    Inventor: Leslie R. Smith
  • Patent number: 5105769
    Abstract: An integral, lightweight, animal feeding device is disclosed. The device has a first bottom, bowl-shaped section joined to a narrower second section which, in turn, is joined to a wider third section. A tray is located at the top of the device. The tray contains a continuous flange comprised of least three substantially linear sides, one of which is longer than the other two; the longer, substantially linear side is coplanar with a portion of the bowl-shaped bottom section.
    Type: Grant
    Filed: June 13, 1991
    Date of Patent: April 21, 1992
    Assignee: K. W. Muth Company, Inc.
    Inventors: Leslie R. Smith, Ronald J. Folkman