Patents by Inventor Arthur T. Bradley

Arthur T. Bradley 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: 11175232
    Abstract: Standoff ultra-compact micro-Raman sensors configured to receive Raman scattering from a substance are disclosed. A laser device may be configured to transmit a laser at a first wavelength. The laser may be expanded to a predetermined size, focused through a lens, and made incident on an unknown substance. A filter may reflect the laser and Rayleigh scattering from the substance, but may permit Raman scattering and laser-induced fluorescence from the substance. One or more lenses and/or filters may receive and pass the Raman scattering and/or laser-induced fluorescence to a light sensor. The received Raman scattering and/or laser-induced fluorescence may be compared to known fingerprints of substances to determine an identity of the substance. The wavelength of the laser, the width of the laser, and other parameters may be varied based on the distance between the standoff ultra-compact micro-Raman sensor and the substance.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: November 16, 2021
    Assignee: UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF NASA
    Inventors: M. Nural Abedin, Arthur T. Bradley, Anupam Kumar Misra, Yingxin Bai
  • Publication number: 20190219510
    Abstract: Standoff ultra-compact micro-Raman sensors configured to receive Raman scattering from a substance are disclosed. A laser device may be configured to transmit a laser at a first wavelength. The laser may be expanded to a predetermined size, focused through a lens, and made incident on an unknown substance. A filter may reflect the laser and Rayleigh scattering from the substance, but may permit Raman scattering and laser-induced fluorescence from the substance. One or more lenses and/or filters may receive and pass the Raman scattering and/or laser-induced fluorescence to a light sensor. The received Raman scattering and/or laser-induced fluorescence may be compared to known fingerprints of substances to determine an identity of the substance. The wavelength of the laser, the width of the laser, and other parameters may be varied based on the distance between the standoff ultra-compact micro-Raman sensor and the substance.
    Type: Application
    Filed: December 19, 2018
    Publication date: July 18, 2019
    Inventors: M. Nural Abedin, Arthur T. Bradley, Anupam Kumar Misra, Yingxin Bai
  • Patent number: 9902446
    Abstract: An amorphous robot includes a compartmented bladder containing fluid, a valve assembly, and an outer layer encapsulating the bladder and valve assembly. The valve assembly draws fluid from a compartment(s) and discharges the drawn fluid into a designated compartment to displace the designated compartment with respect to the surface. Another embodiment includes elements each having a variable property, an outer layer that encapsulates the elements, and a control unit. The control unit energizes a designated element to change its variable property, thereby moving the designated element. The elements may be electromagnetic spheres with a variable polarity or shape memory polymers with changing shape and/or size. Yet another embodiment includes an elongated flexible tube filled with ferrofluid, a moveable electromagnet, an actuator, and a control unit. The control unit energizes the electromagnet and moves the electromagnet via the actuator to magnetize the ferrofluid and lengthen the flexible tube.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: February 27, 2018
    Assignee: THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF NASA
    Inventor: Arthur T. Bradley
  • Publication number: 20160114842
    Abstract: An amorphous robot includes a compartmented bladder containing fluid, a valve assembly, and an outer layer encapsulating the bladder and valve assembly. The valve assembly draws fluid from a compartment(s) and discharges the drawn fluid into a designated compartment to displace the designated compartment with respect to the surface. Another embodiment includes elements each having a variable property, an outer layer that encapsulates the elements, and a control unit. The control unit energizes a designated element to change its variable property, thereby moving the designated element. The elements may be electromagnetic spheres with a variable polarity or shape memory polymers with changing shape and/or size. Yet another embodiment includes an elongated flexible tube filled with ferrofluid, a moveable electromagnet, an actuator, and a control unit. The control unit energizes the electromagnet and moves the electromagnet via the actuator to magnetize the ferrofluid and lengthen the flexible tube.
    Type: Application
    Filed: January 4, 2016
    Publication date: April 28, 2016
    Inventor: ARTHUR T. BRADLEY
  • Patent number: 9229451
    Abstract: An amorphous robot includes a compartmented bladder containing fluid, a valve assembly, and an outer layer encapsulating the bladder and valve assembly. The valve assembly draws fluid from a compartment(s) and discharges the drawn fluid into a designated compartment to displace the designated compartment with respect to the surface. Another embodiment includes elements each having a variable property, an outer layer that encapsulates the elements, and a control unit. The control unit energizes a designated element to change its variable property, thereby moving the designated element. The elements may be electromagnetic spheres with a variable polarity or shape memory polymers with changing shape and/or size. Yet another embodiment includes an elongated flexible tube filled with ferrofluid, a moveable electromagnet, an actuator, and a control unit. The control unit energizes the electromagnet and moves the electromagnet via the actuator to magnetize the ferrofluid and lengthen the flexible tube.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: January 5, 2016
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Arthur T. Bradley
  • Publication number: 20140180524
    Abstract: An amorphous robot includes a compartmented bladder containing fluid, a valve assembly, and an outer layer encapsulating the bladder and valve assembly. The valve assembly draws fluid from a compartment(s) and discharges the drawn fluid into a designated compartment to displace the designated compartment with respect to the surface. Another embodiment includes elements each having a variable property, an outer layer that encapsulates the elements, and a control unit. The control unit energizes a designated element to change its variable property, thereby moving the designated element. The elements may be electromagnetic spheres with a variable polarity or shape memory polymers with changing shape and/or size. Yet another embodiment includes an elongated flexible tube filled with ferrofluid, a moveable electromagnet, an actuator, and a control unit. The control unit energizes the electromagnet and moves the electromagnet via the actuator to magnetize the ferrofluid and lengthen the flexible tube.
    Type: Application
    Filed: February 25, 2014
    Publication date: June 26, 2014
    Applicant: U.S.A. as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Arthur T. Bradley
  • Patent number: 8662213
    Abstract: An amorphous robot includes a compartmented bladder containing fluid, a valve assembly, and an outer layer encapsulating the bladder and valve assembly. The valve assembly draws fluid from a compartment(s) and discharges the drawn fluid into a designated compartment to displace the designated compartment with respect to the surface. Another embodiment includes elements each having a variable property, an outer layer that encapsulates the elements, and a control unit. The control unit energizes a designated element to change its variable property, thereby moving the designated element. The elements may be electromagnetic spheres with a variable polarity or shape memory polymers with changing shape and/or size. Yet another embodiment includes an elongated flexible tube filled with ferrofluid, a moveable electromagnet, an actuator, and a control unit. The control unit energizes the electromagnet and moves the electromagnet via the actuator to magnetize the ferrofluid and lengthen the flexible tube.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: March 4, 2014
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Arthur T. Bradley
  • Publication number: 20120175171
    Abstract: An amorphous robot includes a compartmented bladder containing fluid, a valve assembly, and an outer layer encapsulating the bladder and valve assembly. The valve assembly draws fluid from a compartment(s) and discharges the drawn fluid into a designated compartment to displace the designated compartment with respect to the surface. Another embodiment includes elements each having a variable property, an outer layer that encapsulates the elements, and a control unit. The control unit energizes a designated element to change its variable property, thereby moving the designated element. The elements may be electromagnetic spheres with a variable polarity or shape memory polymers with changing shape and/or size. Yet another embodiment includes an elongated flexible tube filled with ferrofluid, a moveable electromagnet, an actuator, and a control unit. The control unit energizes the electromagnet and moves the electromagnet via the actuator to magnetize the ferrofluid and lengthen the flexible tube.
    Type: Application
    Filed: January 3, 2012
    Publication date: July 12, 2012
    Applicant: U.S.A as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Arthur T. Bradley
  • Patent number: 7428258
    Abstract: The present invention relates to a method and system that emulates a desired waveform by producing a time profile of the desired waveform, which is characterized by a plurality of sample values, and generating a plurality of RF waveforms, each RF waveform of the plurality of RF waveforms having a polarity and scaled energy based on a corresponding one of the plurality of sample values, to produce an aggregate RF energy having spectral characteristics that approximate the spectral characteristics of the desired waveform.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: September 23, 2008
    Assignee: Time Domain Corporation
    Inventors: Larry W. Fullerton, Arthur T. Bradley, Mark D. Roberts
  • Publication number: 20040136438
    Abstract: The present invention relates to a method and system that emulates a desired waveform by producing a time profile of the desired waveform, which is characterized by a plurality of sample values, and generating a plurality of RF waveforms, each RF waveform of the plurality of RF waveforms having a polarity and scaled energy based on a corresponding one of the plurality of sample values, to produce an aggregate RF energy having spectral characteristics that approximate the spectral characteristics of the desired waveform.
    Type: Application
    Filed: October 17, 2003
    Publication date: July 15, 2004
    Applicant: TIME DOMAIN CORPORATION
    Inventors: Larry W. Fullerton, Arthur T. Bradley, Mark D. Roberts