Patents Assigned to The United States of America as represented by the Secretary of the Navy
  • Publication number: 20240118372
    Abstract: Disclosed are methods and apparatus for recording time, latitude, longitude, frequency, and amplitude data to ascertain information about the radio frequency (RF) environment (e.g., RF emitter locations), where the apparatus is also easily transportable. The location determination method using this simple hardware solution may occur in two processes or phases: (1) a data collection phase; and (2) a data processing phase, although these two phases may also be combined in time for a real time solution. During the data collection phase, a user may select a desired frequency range and step size for analysis. A software defined radio (SDR) sweeps through the desired frequencies and records the amplitude associated with each frequency. Each of the recorded points are stamped with their time and geolocation (i.e., latitude and longitude coordinates) and processed using amplitude measurements to ascertain the locations of unknown emitters.
    Type: Application
    Filed: July 28, 2023
    Publication date: April 11, 2024
    Applicant: The United States of America, as represented by the Secretary of the Navy
    Inventors: Ryan Loehrlein, Timothy Ringwald, Kimberly Gold, Jeffrey A. Miller
  • Publication number: 20240118137
    Abstract: Provided is a gyroscope stabilized gimbal assembly for collecting and timestamping video data and laser measurement data. The assembly can be used on multiple platforms and provides an ISR video camera system and one or more laser measurement devices, including photodetectors, thermopiles, filters, and analog to digital converters. The components are mounted to a bracket that can be installed and removed from the assembly to collect/record measurement data from the devices interacting with the laser beam. A processor collects and records measurement data from the devices interacting with the laser beam and calculates optical power data, irradiance data, and wavelength data. A storage device stores a first set of data comprising video data from said camera system and a second set of data comprising optical power data, irradiance data, and wavelength data, wherein said first and second set of data are timestamped, separated, and not comingled.
    Type: Application
    Filed: May 15, 2023
    Publication date: April 11, 2024
    Applicant: The United States of America, as represented by the Secretary of the Navy
    Inventors: Marshall Mullins, Charles Upton, Tyler Fitzsimmons, Joseph Morris
  • Publication number: 20240120201
    Abstract: A technique for selective-area diffusion doping of III-N epitaxial material layers and for fabricating power device structures utilizing this technique. Dopant species such as Mg are introduced into the III-N material layer and are diffused into the III-N material by annealing under stable or metastable conditions. The dopant species can be introduced via deposition of a metal or alloy layer containing such species using sputtering, e-beam evaporation or other technique known to those skilled in the art. The dopant material layer is capped with a thermally stable layer to prevent decomposition and out-diffusion, and then is annealed under stable or metastable conditions to diffuse the dopant into the III-N material GaN without decomposing the surface.
    Type: Application
    Filed: March 31, 2023
    Publication date: April 11, 2024
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Travis J. Anderson, Mona A. Ebrish, Alan G. Jacobs, Karl D. Hobart, Francis J. Kub
  • Publication number: 20240117499
    Abstract: A corrosion resistant bimetal includes a part and one or more sacrificial anodes. The part includes a metal component that is susceptible to corrosion. The sacrificial anodes consists of an attachment to the part through a metallic bond between the metal component and the sacrificial anode to form a crystalline solid that includes the sacrificial anode and the metal component of the part.
    Type: Application
    Filed: October 23, 2023
    Publication date: April 11, 2024
    Applicant: THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
    Inventor: Stephen Charles Cox
  • Publication number: 20240116632
    Abstract: A recoil device is provided for a gun having a barrel with a breech. The device includes a breech nut, a brake assembly, a pneumatic spring and a counter-recoil buffer. The breech nut has first and second adjacent sides. The brake assembly includes a brake cylinder that mounts to the breech nut on the first side. The pneumatic spring mounts to the breech nut on the second side. The counter-recoil buffer attaches to the pneumatic spring. The brake cylinder and the pneumatic spring internally push fluids for recoil absorption and return in response to firing the gun.
    Type: Application
    Filed: June 20, 2023
    Publication date: April 11, 2024
    Applicant: United States of America, as represented by the Secretary of the Navy
    Inventors: Matthew Thomas Buckler, Michael M. Canaday, Thomas Klebert Houck, Jr., Gregory Noble Fish, William Michael McCoy, Nathan Arnold Lambert, Timothy Gerald Burcham, Xavier Anthony Quinn, Douglas Lawrence Ramers, Sabrina Hong-Yee Lau
  • Publication number: 20240119734
    Abstract: The invention is a system and method for efficient filtering, clustering, tracking and persistent motion detection for event cameras. More particularly, embodiments of the present invention combine compatible asynchronous event filtering and clustering techniques in a computationally efficient way to identify and track objects in the field of view that exhibit persistent motion characteristic of marine vessels, cars, aircraft, and other vehicles while ignoring dynamic background elements that move in a more erratic fashion.
    Type: Application
    Filed: October 11, 2022
    Publication date: April 11, 2024
    Applicant: United States of America as represented by the Secretary of the Navy
    Inventors: Stephanie Lilith Aelmore, Richard Christopher OrdoƱez
  • Publication number: 20240118076
    Abstract: A method of determining ocean state. The method may include receiving, by a processing device, data associated with a prior ocean forecast state, and receiving, by the processing device, data associated with a first set of ocean temperature and salinity observations. The method may include receiving, by the processing device, data associated with a first set of ocean acoustic pressure observations. The method may include determining, by the processing device, a correction to the prior ocean forecast state based on a forward acoustic model, on an adjoint acoustic model, on the data associated with a first set of ocean temperature and ocean salinity observations, and on the data associated with a first set of ocean acoustic pressure observations, and generating, by the processing device, a current ocean state based on the determined correction.
    Type: Application
    Filed: September 21, 2023
    Publication date: April 11, 2024
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Matthew J. Carrier, Hans E. Ngodock, Josette P. Fabre
  • Publication number: 20240118144
    Abstract: Methods providing distributed temperature and strain measurements are disclosed. Brillouin pump laser pulses having a Brillouin pump frequency are coupled into a first end of an optical fiber. Brillouin Stokes and Anti-Stokes probe laser beams are coupled into a second end of the fiber. The Stokes probe laser beam has a Stokes probe frequency. The Anti-Stokes probe laser beam has an Anti-Stokes probe frequency. The Stokes and Anti-Stokes probe frequencies and the pump frequency are included in a Brillouin frequency band. A train of Rayleigh seed pulses are coupled into the fiber. Each of the seed pulses of the train has a respective different frequency included in a Rayleigh frequency band. Frequencies of the Brillouin frequency band are coupled to a Brillouin detector, and Rayleigh backscatter signals are coupled to a Rayleigh detector. Brillouin and Rayleigh detector outputs are used to calculate the measurements. Related sensors are also disclosed.
    Type: Application
    Filed: September 26, 2023
    Publication date: April 11, 2024
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Matthew Joseph Murray, Joseph Brady Murray, Hannah Marie Ogden, Brandon F. Redding
  • Patent number: 11953566
    Abstract: Disclosed are apparatus and methods for sensing and measurement of magnetic fields that are insensitive to temperature, and respond linearly to the magnitude of the magnetic field. In particular, the apparatus and methods include the use of a resistance network including at least one fluorinated graphene foam (FGF) magnetoresistive device. Measurement of a voltage drop across at least one FGF magnetoresistive device is correlated to either merely the presence of a magnetic field or for measurement of at least a scalar magnitude value of the magnetic field. The use of FGF affords both temperature-insensitivity and linear magnetic field responsivity.
    Type: Grant
    Filed: August 25, 2022
    Date of Patent: April 9, 2024
    Assignee: The United States of America, as Represented by the Secretary of the Navy
    Inventors: Paymon Shirazi, Subrata Sanyal
  • Patent number: 11956935
    Abstract: The embodiments are directed to protecting objects having sensitive electronics from high power radio frequency (HPRF) interference signals. An object with the sensitive electronics has a thin film applied to the object's outer surface. The thin film conforms to the object's outer surface contours. The thin film has a substrate foundation, an array in intimate adjacent contact with the substrate foundation. The array has a plurality of radio frequency (RF) witness films overlain on the substrate foundation. Each RF witness film in the plurality of RF witness films is equally-spaced from adjacent RF witness films.
    Type: Grant
    Filed: January 25, 2022
    Date of Patent: April 9, 2024
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Zachary A. Sechrist, Christopher G. Yelton
  • Publication number: 20240110841
    Abstract: Provided are methods and associated apparatus for determining the integrity of a hermetically sealed electronic component. The method and associated apparatus includes the use of an evacuation chamber configured to placing the hermetically sealed electronic component within. The evacuation chamber is then evacuated of atmosphere to then determine an atmospheric pressure evacuation relationship or curve occurring inside the chamber that is, in turn, used to determine the integrity of the hermetically sealed electronic component. Further aspects may include evacuating the chamber through a mass spectrometer coupled to the evacuation chamber for chemical analysis of at least one of the evacuated atmosphere for making further determinations of the integrity of the hermetically sealed electronic component.
    Type: Application
    Filed: October 4, 2023
    Publication date: April 4, 2024
    Applicant: The United States of America, as represented by the Secretary of the Navy
    Inventors: Brandon Hirsch, Matthew Keller, Stephen Becker, Michael A. Samp
  • Patent number: 11946392
    Abstract: A flow control device for constraining fluid flow between axial flow turbomachines in series has a flow constrainer which constrains the fluid flow downstream of the first turbomachine in the series to the blades region of the second turbomachine, preventing fluid flow from impacting the hub or nosecone of the second turbomachine and providing more uniform fluid flow to the second turbomachine. The flow control device includes connective elements for positioning between the downstream region of the first turbomachine and the upstream region of the second turbomachine. The device may be equipped with stator vanes having a variety of optional configurations to further improve the uniformity of the fluid flow load on the second turbomachine.
    Type: Grant
    Filed: January 18, 2023
    Date of Patent: April 2, 2024
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Michael E. Slipper, Tristan M. Wolfe, Kyle J. Verrinder
  • Publication number: 20240102805
    Abstract: A single body multi-mode mechanical resonator includes two or more spring-mass devices, one or more anchor springs, a phase 1 parallel plate electrode and a phase 2 parallel plate electrode, a plurality of interdigitated shaped combs, a plurality of interdigitated drive combs, and a plurality of interdigitated sense combs. The spring-mass devices further include two or more lumped masses and one or more anchor springs. The coupling springs couple the motion of the two or more lumped masses. The parallel plate electrodes apply forces to the in-phase mode that yield equal in magnitude but opposite in sign frequency shifts of the anti-phase mode. The shaped combs compensate for a frequency drift of the anti-phase mode and cancels first-order displacement effects. The drive combs are aligned to the anti-phase mode, with a frequency selective excitation. The sense combs are aligned to the anti-phase mode and capable of cancelling common-mode noise effects.
    Type: Application
    Filed: September 22, 2022
    Publication date: March 28, 2024
    Applicant: THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
    Inventor: Andrew B. Sabater
  • Patent number: 11939151
    Abstract: A dunnage assembly has a plurality of dunnage sections removably attached to each other and includes a forwardmost dunnage section and an aftmost dunnage section. The forwardmost dunnage section has the longest length and the aftmost dunnage section has the shortest length. Each dunnage section has a plurality of tubes and a plurality of tube collars that support the tubes such that the tubes are substantially parallel to each other. Each tube of each dunnage section has an interior region sized to receive a longitudinally extending item and is substantially coaxially aligned with a tube of an adjacent dunnage section. Each tube collar has a plurality of thru-holes therein where each thru-hole is sized to receive a portion of a tube. Each dunnage section includes a tube collar removably attached to a tube collar of an adjacent dunnage section.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: March 26, 2024
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Timothy D. Underwood, Andrew S. Coombs
  • Patent number: 11939787
    Abstract: A rapidly deployable structure that includes a first and second hub, a plurality of legs and a rod connected to the first hub. The first hub includes first recesses. The second hub includes second recesses and an alignment guide. Each leg is connected to the first hub and the second hub. The rod connected is to the first hub and includes pins that are movable between an extended state, where pins protrude from the rod, and a retracted state where the pins are retracted within the rod. The first hub is movable relative to the second hub between a first state in which the rod is disposed above the alignment guide in an axial direction defined by an opening in the alignment guide and a second state in which a portion of the rod comprising the pins is below the alignment guide in the axial direction.
    Type: Grant
    Filed: July 27, 2021
    Date of Patent: March 26, 2024
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Edward Michaelchuck, Scott Ramsey, Christopher Strem
  • Patent number: 11944011
    Abstract: Thermoelectric (TE) nanocomposite material that includes at least one component consisting of nanocrystals. A TE nanocomposite material in accordance with the present invention can include, but is not limited to, multiple nanocrystalline structures, nanocrystal networks or partial networks, or multi-component materials, with some components forming connected interpenetrating networks including nanocrystalline networks. The TE nanocomposite material can be in the form of a bulk solid having semiconductor nanocrystallites that form an electrically conductive network within the material.
    Type: Grant
    Filed: December 2, 2022
    Date of Patent: March 26, 2024
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Boris N. Feigelson, Kevin P. Anderson, Benjamin L. Greenberg, James A. Wollmershauser, Alan G. Jacobs
  • Patent number: 11939276
    Abstract: A nanoparticle of a decomposition product of a transition metal aluminum hydride compound, a transition metal borohydride compound, or a transition metal gallium hydride compound. A process of: reacting a transition metal salt with an aluminum hydride compound, a borohydride compound, or a gallium hydride compound to produce one or more of the nanoparticles. The reaction occurs in solution while being sonicated at a temperature at which the metal hydride compound decomposes. A process of: reacting a nanoparticle with a compound containing at least two hydroxyl groups to form a coating having multi-dentate metal-alkoxides.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: March 26, 2024
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Albert Epshteyn, Zachary J. Huba
  • Publication number: 20240094425
    Abstract: A detector for detecting optically undetectable sub-cm orbital debris. A ring detector comprising a current pulse transformer (CPT) in which a conducting wire coil is wrapped around a loop of high permeability material having a magnetic nanoparticle (MNP) core. Debris objects in low earth orbit become charged as they pass through local plasma. As each charged debris object passes through the coil-wrapped loop, its current generates an induced voltage pulse, which can be used to detect the presence of the debris object. By fielding such a detector on a satellite, a long duration survey of the debris distribution in the LEO region can be made as the satellite's altitude is systematically varied.
    Type: Application
    Filed: March 3, 2023
    Publication date: March 21, 2024
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: William E. Amatucci, Gurudas I. Ganguli, Abhijit Sen, Christopher Crabtree
  • Patent number: 11931046
    Abstract: A junctional tourniquet apparatus and related methods of use. An exemplary tourniquet has an inverted cone shape, wherein a narrower end has a mushroom shaped base that is pressed against a compression target and a broader end has a plurality of pass-through slots for straps. Another exemplary tourniquet has a broad plate component and a handle component. The handle component has a mushroom shaped base on a first end and a handle on a second end. The handle component passes through the center of the plate component with threads that allow the handle component to compress a target by twisting the handle.
    Type: Grant
    Filed: January 13, 2023
    Date of Patent: March 19, 2024
    Assignee: The United States of America, as Represented by the Secretary of the Navy
    Inventors: Joseph Thomas Burkart, Danielle E. Cafasso, Robert Henry Hayford, Huckelberry A. Finne, Jose Ramirez Vargas, Michael P. Abbott
  • Patent number: 11937361
    Abstract: A cathode emitter assembly includes a cathode tube having a gas feed portion and a plasma outflow portion; an outer annular cathode insert in the plasma outflow portion of the cathode tube; an inner cathode insert in the plasma outflow section of the cathode tube; and an annular plasma emission portion defined between an inner surface of the outer annular cathode insert and an outer surface of the inner cathode insert.
    Type: Grant
    Filed: February 9, 2022
    Date of Patent: March 19, 2024
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Michael McDonald, Marcel Georgin