Patents by Inventor Michael A. Metcalf

Michael A. Metcalf 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: 9709594
    Abstract: A laser Doppler velocimeter uses self-mixing amplification of backreflections from scatterers below the surface of a flow. A time domain signal is divided into segments that are roughly equal to a transit time of particles through a focus of a laser beam. The segments are connected to a frequency domain through the use of an FFT algorithm to produce frequency domain data segments. Signal-to-noise ratio is enhanced through signal processing techniques using the segments to produce a final enhanced signal spectrum.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: July 18, 2017
    Assignee: Teledyne Technologies Incorporated
    Inventors: William R. Christian, Ray C. Delcher, Tong Chen, Mohsen Khoshnevisan, Phillip B. Liescheski, Michael A. Metcalf
  • Patent number: 8804103
    Abstract: A laser Doppler velocimeter uses self-mixing amplification of backreflections from scatterers below the surface of a flow. A time domain signal is divided into segments that are roughly equal to a transit time of particles through a focus of a laser beam. The segments are connected to a frequency domain through the use of an FFT algorithm to produce frequency domain data segments. Signal-to-noise ratio is enhanced through signal processing techniques using the segments to produce a final enhanced signal spectrum.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: August 12, 2014
    Assignee: Teledyne Technologies Incorporated
    Inventors: William R. Christian, Ray C. Delcher, Tong Chen, Mohsen Khoshnevisan, Phillip B. Liescheski, Michael A. Metcalf
  • Patent number: 8743351
    Abstract: A laser Doppler velocimeter uses self-mixing amplification of backreflections from scatterers below the surface of a flow. A time domain signal is divided into segments that are roughly equal to a transit time of particles through a focus of a laser beam. The segments are connected to a frequency domain through the use of an FFT algorithm to produce frequency domain data segments. Signal-to-noise ratio is enhanced through signal processing techniques using the segments to produce a final enhanced signal spectrum.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: June 3, 2014
    Assignee: Teledyne Technologies Incorporated
    Inventors: William R. Christian, Ray C. Delcher, Tong Chen, Mohsen Khoshnevisan, Phillip B. Liescheski, Michael A. Metcalf
  • Patent number: 8339584
    Abstract: A laser Doppler velocimeter uses self-mixing amplification of backreflections from scatterers below the surface of a flow. A time domain signal is divided into segments that are roughly equal to a transit time of particles through a focus of a laser beam. The segments are connected to a frequency domain through the use of an FFT algorithm to produce frequency domain data segments. Signal-to-noise ratio is enhanced through signal processing techniques using the segments to produce a final enhanced signal spectrum.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: December 25, 2012
    Assignee: Teledyne Technologies Incorporated
    Inventors: William R. Christian, Ray C. Delcher, Tong Chen, Mohsen Khoshnevisan, Phillip B. Liescheski, Michael A. Metcalf
  • Publication number: 20110285984
    Abstract: A laser Doppler velocimeter uses self-mixing amplification of backreflections from scatterers below the surface of a flow. A time domain signal is divided into segments that are roughly equal to a transit time of particles through a focus of a laser beam. The segments are connected to a frequency domain through the use of an FFT algorithm to produce frequency domain data segments. Signal-to-noise ratio is enhanced through signal processing techniques using the segments to produce a final enhanced signal spectrum.
    Type: Application
    Filed: May 21, 2010
    Publication date: November 24, 2011
    Applicant: Teledyne Technologies Incorporated
    Inventors: Wiiliam R. Christian, Ray C. Delcher, Tong Chen, Mohsen Khoshnevisan, Phillip B. Liescheski, Michael A. Metcalf
  • Patent number: 7636639
    Abstract: A remote sensor and associated data processor, performs concurrent analysis of backscattered signals from a multi-beam (6-10) acoustic Doppler emitter/receiver (1) positioned against the inside wall of a conveying pipe (2) or channel. Range-gating of the return signals allows independent analysis of discrete volumes of backscattered signal data corresponding to the distribution, concentration and travel velocity of small individual volumes or bins of water and suspended solids (4). Velocity is derived from the measured Doppler frequency shift for each bin. Relative solids concentration is estimated as a function of the measured intensity of the backscattered signals.
    Type: Grant
    Filed: November 23, 2004
    Date of Patent: December 22, 2009
    Assignee: Teledyne Isco, Inc.
    Inventors: Michael A. Metcalf, John M. Land
  • Patent number: 6983208
    Abstract: A remote sensor and associated data processor, performs concurrent analysis of backscattered signals from a multi-beam acoustic Doppler emitter/receiver positioned against the inside wall of a conveying pipe or channel. Range-gating of the return signals allows independent analysis of discrete volumes of backscattered signal data corresponding to the distribution, concentration and travel velocity of small individual volumes or bins of water and suspended solids. Velocity is derived from the measured Doppler frequency shift for each bin. Relative solids concentration is estimated as a function of the measured intensity of the backscattered signals.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: January 3, 2006
    Assignee: MGD Technologies, Inc.
    Inventors: Michael A. Metcalf, John M. Land