Patents by Inventor Daniel F. Perey

Daniel F. Perey 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).

  • Publication number: 20200000339
    Abstract: Systems and methods for measuring phase dynamics and other properties (e.g. intracranial pressure) are disclosed. For example, the system may generate a reference waveform and a measurement waveform using digital synthesizers, each waveform having an identical constant frequency but also a relative phase shift. Next, system may send a tone-burst, via a transducer, into a sample (e.g. a skull or a bonded material), and then receive a reflected tone-burst in response. Then, a phase difference between the received tone-burst and the measurement waveform may be determined with a linear phase detector. Next, the phase shift of the measurement waveform may be adjusted, by the determined phase difference, such that there is no longer any phase difference between the received tone-burst and the adjusted measurement waveform generated by the appropriate digital synthesizer. A similar adjustment may occur after subsequent tone-bursts, allowing accurate monitoring of continuously variable phase relationships.
    Type: Application
    Filed: August 16, 2019
    Publication date: January 2, 2020
    Inventors: William T. Yost, John H. Cantrell, Daniel F. Perey
  • Publication number: 20190339216
    Abstract: A probe for collecting optically stimulated electron emission to inspect chemical reactions of a surface includes a light source to emit light on the surface, a collector, and a controller. The light source emits light on the surface. The collector is configured to detect photoelectrons emitted from the surface in response to the light from the light source impinging on the surface. The collector is further configured to provide a photocurrent based on the detected photoelectrons. The controller includes at least one processor and is operably coupled to the light source and the collector. The controller is configured to cause the light source to emit light on the surface, receive the photocurrent from the collector, and determine at least one chemical reaction of the surface based on the received photocurrent.
    Type: Application
    Filed: May 3, 2019
    Publication date: November 7, 2019
    Applicant: United States of America as Represented by the Administrator of NASA
    Inventors: William T. Yost, Daniel F. Perey, Paul Petzar, John W. Connell, Frank L. Palmieri, Rodolfo I. Ledesma, Joshua L. Brown
  • Patent number: 10390704
    Abstract: Systems and methods for measuring phase dynamics and other properties (e.g. intracranial pressure) are disclosed. For example, the system may generate a reference waveform and a measurement waveform using digital synthesizers, each waveform having an identical constant frequency but also a relative phase shift. Next, system may send a tone-burst, via a transducer, into a sample (e.g. a skull or a bonded material), and then receive a reflected tone-burst in response. Then, a phase difference between the received tone-burst and the measurement waveform may be determined with a linear phase detector. Next, the phase shift of the measurement waveform may be adjusted, by the determined phase difference, such that there is no longer any phase difference between the received tone-burst and the adjusted measurement waveform generated by the appropriate digital synthesizer. A similar adjustment may occur after subsequent tone-bursts, allowing accurate monitoring of continuously variable phase relationships.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: August 27, 2019
    Assignee: United States of America as represented by the Administrator of NASA
    Inventors: William T. Yost, John H. Cantrell, Daniel F. Perey
  • Patent number: 10302556
    Abstract: Systems, methods, instruments and devices of the various embodiments enable improved characterization and comparison of the level and species of surface contaminants from photo-induced emission analysis. The various embodiments may provide flexibility for calculating and analyzing the time-dependence of emission efficiencies. Irregular and heterogeneous surfaces, including regionally multiply-connected surface compositions, may be analyzed according to the various embodiments, and the various embodiments include techniques that support specific contaminant identification. Various embodiment focusing techniques may enhance assessment of spatially differential regional analysis of the substrate for more critical applications. The various embodiments may also include differential comparison with reference surfaces, either through differential comparison while scanning, or by comparison to digitally stored responses to known contaminants.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: May 28, 2019
    Assignee: THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF NASA
    Inventors: William T. Yost, Daniel F. Perey
  • Patent number: 10153606
    Abstract: A method of crimping wires includes positioning a wire/terminal combination between first and second crimp forming tools. A force is applied to the crimp forming tools to deform the wire/terminal combination. The method further includes measuring ultrasonic energy that is transmitted across the wire/terminal combination as the terminal is being deformed. A rate of change of the magnitude of the ultrasonic energy is also determined as the terminal is being deformed. The crimping process is terminated if the rate of change of the magnitude of the ultrasonic energy falls below a predefined threshold level. Data gathered during the crimping process can also be utilized to determine if a faulty crimp has occurred.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: December 11, 2018
    Assignee: THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF NASA
    Inventors: Karl Elliott Cramer, William T. Yost, Daniel F. Perey
  • Publication number: 20170067819
    Abstract: Systems, methods, instruments and devices of the various embodiments enable improved characterization and comparison of the level and species of surface contaminants from photo-induced emission analysis. The various embodiments may provide flexibility for calculating and analyzing the time-dependence of emission efficiencies. Irregular and heterogeneous surfaces, including regionally multiply-connected surface compositions, may be analyzed according to the various embodiments, and the various embodiments include techniques that support specific contaminant identification. Various embodiment focusing techniques may enhance assessment of spatially differential regional analysis of the substrate for more critical applications. The various embodiments may also include differential comparison with reference surfaces, either through differential comparison while scanning, or by comparison to digitally stored responses to known contaminants.
    Type: Application
    Filed: July 14, 2016
    Publication date: March 9, 2017
    Inventors: WILLIAM T. YOST, DANIEL F. PEREY
  • Patent number: 9537277
    Abstract: A process and apparatus for collecting data for nondestructive evaluation of the quality of a crimped wire connector are provided. The process involves providing a crimping tool having an anvil and opposing jaw for crimping a terminal onto a stranded wire, moving the jaw relative to the anvil to close the distance between the jaw and the anvil and thereby compress the terminal against the wire, while transmitting ultrasonic waves that are propagated through the terminal wire combination and received at a receiving ultrasonic transducer as the jaw is moved relative to the anvil, and detecting and recording the position of the jaw relative to the anvil as a function of time and detecting and recording the amplitude of the ultrasonic wave that is received at the receiving ultrasonic transducer as a function of time as the jaw is moved relative to the anvil.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: January 3, 2017
    Inventors: William T. Yost, Karl E. Cramer, Daniel F. Perey, Keith A. Williams
  • Publication number: 20160262621
    Abstract: Systems and methods for measuring phase dynamics and other properties (e.g. intracranial pressure) are disclosed. For example, the system may generate a reference waveform and a measurement waveform using digital synthesizers, each waveform having an identical constant frequency but also a relative phase shift. Next, system may send a tone-burst, via a transducer, into a sample (e.g. a skull or a bonded material), and then receive a reflected tone-burst in response. Then, a phase difference between the received tone-burst and the measurement waveform may be determined with a linear phase detector. Next, the phase shift of the measurement waveform may be adjusted, by the determined phase difference, such that there is no longer any phase difference between the received tone-burst and the adjusted measurement waveform generated by the appropriate digital synthesizer. A similar adjustment may occur after subsequent tone-bursts, allowing accurate monitoring of continuously variable phase relationships.
    Type: Application
    Filed: March 9, 2016
    Publication date: September 15, 2016
    Inventors: William T. Yost, John H. Cantrell, Daniel F. Perey
  • Publication number: 20160104994
    Abstract: A method of crimping wires includes positioning a wire/terminal combination between first and second crimp forming tools. A force is applied to the crimp forming tools to deform the wire/terminal combination. The method further includes measuring ultrasonic energy that is transmitted across the wire/terminal combination as the terminal is being deformed. A rate of change of the magnitude of the ultrasonic energy is also determined as the terminal is being deformed. The crimping process is terminated if the rate of change of the magnitude of the ultrasonic energy falls below a predefined threshold level. Data gathered during the crimping process can also be utilized to determine if a faulty crimp has occurred.
    Type: Application
    Filed: June 24, 2015
    Publication date: April 14, 2016
    Inventors: Karl Elliott Cramer, William T. Yost, Daniel F. Perey
  • Patent number: 9003645
    Abstract: A system for determining the quality of an electrical wire crimp between a wire and ferrule includes an ultrasonically equipped crimp tool (UECT) configured to transmit an ultrasonic acoustic wave through a wire and ferrule, and a signal processor in communication with the UECT. The signal processor includes a signal transmitting module configured to transmit the ultrasonic acoustic wave via an ultrasonic transducer, signal receiving module configured to receive the ultrasonic acoustic wave after it passes through the wire and ferrule, and a signal analysis module configured to identify signal differences between the ultrasonic waves. The signal analysis module is then configured to compare the signal differences attributable to the wire crimp to a baseline, and to provide an output signal if the signal differences deviate from the baseline.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: April 14, 2015
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: William T. Yost, Daniel F. Perey, Karl E. Cramer
  • Patent number: 8875580
    Abstract: A method and apparatus for evaluating and/or quantifying damage to wire strands of a wire caused during installation of a crimped wire connector, involves launching an ultrasonic wave having known characteristics into a wire at a location that is either the crimp or is adjacent the crimped wire connector, and detecting changes in the characteristics (e.g., amplitude and/or phase shift) of the wave as it is propagates along a length of the wire.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: November 4, 2014
    Assignee: The United States of America as represented by the Adminstrator of the National Aeronautics and Space Adminstration
    Inventors: William T. Yost, Karl Elliott Cramer, Daniel F. Perey
  • Publication number: 20140173887
    Abstract: A process and apparatus for collecting data for nondestructive evaluation of the quality of a crimped wire connector are provided. The process involves providing a crimping tool having an anvil and opposing jaw for crimping a terminal onto a stranded wire, moving the jaw relative to the anvil to close the distance between the jaw and the anvil and thereby compress the terminal against the wire, while transmitting ultrasonic waves that are propagated through the terminal wire combination and received at a receiving ultrasonic transducer as the jaw is moved relative to the anvil, and detecting and recording the position of the jaw relative to the anvil as a function of time and detecting and recording the amplitude of the ultrasonic wave that is received at the receiving ultrasonic transducer as a function of time as the jaw is moved relative to the anvil.
    Type: Application
    Filed: February 28, 2014
    Publication date: June 26, 2014
    Applicants: Tyco Electronics Corporation, U.S.A. as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: William T. Yost, Karl E. Cramer, Daniel F. Perey, Keith A. Williams
  • Patent number: 8760039
    Abstract: A diamond-shaped actuator for a flexible panel has an inter-digitated electrode (IDE) and a piezoelectric wafer portion positioned therebetween. The IDE and/or the wafer portion are diamond-shaped. Point sensors are positioned with respect to the actuator and measure vibration. The actuator generates and transmits a cancelling force to the panel in response to an output signal from a controller, which is calculated using a signal describing the vibration. A method for controlling vibration in a flexible panel includes connecting a diamond-shaped actuator to the flexible panel, and then connecting a point sensor to each actuator. Vibration is measured via the point sensor. The controller calculates a proportional output voltage signal from the measured vibration, and transmits the output signal to the actuator to substantially cancel the vibration in proximity to each actuator.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: June 24, 2014
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Noah H. Schiller, Randolph H. Cabell, Daniel F. Perey
  • Patent number: 8671551
    Abstract: A process and apparatus for collecting data for nondestructive evaluation of the quality of a crimped wire connector are provided. The process involves providing a crimping tool having an anvil and opposing jaw for crimping a terminal onto a stranded wire, moving the jaw relative to the anvil to close the distance between the jaw and the anvil and thereby compress the terminal against the wire, while transmitting ultrasonic waves that are propagated through the terminal-wire combination and received at a receiving ultrasonic transducer as the jaw is moved relative to the anvil, and detecting and recording the position of the jaw relative to the anvil as a function of time and detecting and recording the amplitude of the ultrasonic wave that is received at the receiving ultrasonic transducer as a function of time as the jaw is moved relative to the anvil.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: March 18, 2014
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: William T. Yost, Karl E. Cramer, Daniel F. Perey, Keith A. Williams
  • Patent number: 8490463
    Abstract: A method is provided for calibrating ultrasonic signals passed through a crimp formed with respect to a deformable body via an ultrasonically-equipped crimp tool (UECT). The UECT verifies a crimp quality using the ultrasonic signals. The method includes forming the crimp, transmitting a first signal, e.g., a pulse, to a first transducer of the UECT, and converting the first signal, using the first transducer, into a second signal which defines an ultrasonic pulse. This pulse is transmitted through the UECT into the crimp. A second transducer converts the second signal into a third signal, which may be further conditioned, and the ultrasonic signals are calibrated using the third signal or its conditioned variant. An apparatus for calibrating the ultrasonic signals includes a pulse module (PM) electrically connected to the first and second transducers, and an oscilloscope or display electrically connected to the PM for analyzing an electrical output signal therefrom.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: July 23, 2013
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: William T. Yost, Daniel F. Perey, K. Elliott Cramer
  • Publication number: 20130145849
    Abstract: A method and apparatus for evaluating and/or quantifying damage to wire strands of a wire caused during installation of a crimped wire connector, involves launching an ultrasonic wave having known characteristics into a wire at a location that is either the crimp or is adjacent the crimped wire connector, and detecting changes in the characteristics (e.g., amplitude and/or phase shift) of the wave as it is propagates along a length of the wire.
    Type: Application
    Filed: December 13, 2011
    Publication date: June 13, 2013
    Applicant: U.S.A. as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: William T. Yost, Karl Elliott Cramer, Daniel F. Perey
  • Publication number: 20130113338
    Abstract: A diamond-shaped actuator for a flexible panel has an inter-digitated electrode (IDE) and a piezoelectric wafer portion positioned therebetween. The IDE and/or the wafer portion are diamond-shaped. Point sensors are positioned with respect to the actuator and measure vibration. The actuator generates and transmits a cancelling force to the panel in response to an output signal from a controller, which is calculated using a signal describing the vibration. A method for controlling vibration in a flexible panel includes connecting a diamond-shaped actuator to the flexible panel, and then connecting a point sensor to each actuator. Vibration is measured via the point sensor. The controller calculates a proportional output voltage signal from the measured vibration, and transmits the output signal to the actuator to substantially cancel the vibration in proximity to each actuator.
    Type: Application
    Filed: November 8, 2011
    Publication date: May 9, 2013
    Applicant: U. S.A. as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Noah H. Schiller, Randolph H. Cabell, Daniel F. Perey
  • Publication number: 20120192407
    Abstract: A process and apparatus for collecting data for nondestructive evaluation of the quality of a crimped wire connector are provided. The process involves providing a crimping tool having an anvil and opposing jaw for crimping a terminal onto a stranded wire, moving the jaw relative to the anvil to close the distance between the jaw and the anvil and thereby compress the terminal against the wire, while transmitting ultrasonic waves that are propagated through the terminal-wire combination and received at a receiving ultrasonic transducer as the jaw is moved relative to the anvil, and detecting and recording the position of the jaw relative to the anvil as a function of time and detecting and recording the amplitude of the ultrasonic wave that is received at the receiving ultrasonic transducer as a function of time as the jaw is moved relative to the anvil.
    Type: Application
    Filed: February 1, 2012
    Publication date: August 2, 2012
    Applicant: U.S.A. as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: William T. Yost, Karl E. Cramer, Daniel F. Perey, Keith A. Williams
  • Publication number: 20120060585
    Abstract: A method is provided for calibrating ultrasonic signals passed through a crimp formed with respect to a deformable body via an ultrasonically-equipped crimp tool (UECT). The UECT verifies a crimp quality using the ultrasonic signals. The method includes forming the crimp, transmitting a first signal, e.g., a pulse, to a first transducer of the UECT, and converting the first signal, using the first transducer, into a second signal which defines an ultrasonic pulse. This pulse is transmitted through the UECT into the crimp. A second transducer converts the second signal into a third signal, which may be further conditioned, and the ultrasonic signals are calibrated using the third signal or its conditioned variant. An apparatus for calibrating the ultrasonic signals includes a pulse module (PM) electrically connected to the first and second transducers, and an oscilloscope or display electrically connected to the PM for analyzing an electrical output signal therefrom.
    Type: Application
    Filed: September 14, 2010
    Publication date: March 15, 2012
    Applicants: Space Administration
    Inventors: William T. Yost, Daniel F. Perey, K. Elliott Cramer
  • Patent number: 7181942
    Abstract: An ultrasonic device and method obtains desirable crimp connections between a crimp connector and a wire, or bundle of wires, by assessing the desirability of connections made in a wire-to-wire connection and in other situations where two materials with good acoustic propagation characteristics are joined together via deformation. An embodiment of the device as a crimping tool comprises a compressing means, pulse-generating circuitry, at least one ultrasonic transmitting transducer, at least one ultrasonic receiving transducer, receiving circuitry, and a display. The user may return to a previously crimped connection and assess the desirability of the connection by compressing the device about the connection, sending an acoustic signal through the crimp, and comparing the received signal to a signal obtained from known desirable connections.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: February 27, 2007
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: William T. Yost, K. Elliott Cramer, Daniel F. Perey