Patents Assigned to Moxtek, Inc.
  • Dual tube support for electron emitter
    Patent number: 9240303
    Abstract: An x-ray tube including dual, electrically-conductive emitter tubes to support and provide electrical power to an electron emitter. A method of evacuating and sealing the x-ray tube by drawing a vacuum on the x-ray tube through an inner tube of dual emitter tubes, then pinching the inner tube to seal off the enclosure and to maintain a vacuum therein.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: January 19, 2016
    Assignee: Moxtek, Inc.
    Inventors: Brian Barnum, Dustin Peterson, Eric Miller, Eric Draper, Jon Barron
  • Tiltable or deflectable anode x-ray tube
    Patent number: 9184020
    Abstract: A x-ray tube comprising an anode sealed to a flexible coupling. The flexible coupling can allow the anode to deflect or tilt in various directions to allow an electron beam to impinge upon various selected regions of an anode target. A method of utilizing different regions of an x-ray tube target by tilting or deflecting an x-ray tube anode to cause an electron beam to impinge on a selected region of the target.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: November 10, 2015
    Assignee: Moxtek, Inc.
    Inventor: Todd S. Parker
  • Multi-target X-ray tube with stationary electron beam position
    Patent number: 9177755
    Abstract: A transmission x-ray tube comprising an end window hermetically sealed to a flexible coupling. The flexible coupling can allow the window to shift or tilt in one direction or another direction to allow an electron beam to impinge upon one region of the window or another region of the window. A method of utilizing different regions of an x-ray tube target by tilting an x-ray tube window at an acute angle with respect to an electron beam axis to cause an electron beam to impinge on a selected region of the window and tilting the window in a different direction to allow the electron beam to impinge on a different selected region of the window.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: November 3, 2015
    Assignee: Moxtek, Inc.
    Inventors: Todd S. Parker, Steven D. Liddiard, Dave Reynolds
  • X-ray tube and receiver inside mouth
    Patent number: 9173623
    Abstract: A method and a device for low x-ray radiation dosage while taking x-ray images of a patient's teeth is disclosed. The method includes use of an x-ray source and receiver positioned at least partially inside the patient's mouth. The device includes an x-ray source and receiver attached together by a bite holder and configured to both be disposed at least partially inside the patient's mouth across a tooth while taking x-ray images of a patient's tooth.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: November 3, 2015
    Assignees: Moxtek, Inc.
    Inventors: Samuel Soonho Lee, Victor Armando Tirado, David S. Crawford
  • High strength carbon fiber composite wafers for microfabrication
    Patent number: 9174412
    Abstract: A high strength carbon fiber composite (CFC) wafer, and method of making such wafer, with low surface roughness comprising at least one sheet of CFC including carbon fibers embedded in a matrix. The wafer can have a thickness of between 10-500 micrometers. The wafer can have a root mean square surface roughness Rq, on at least one side, of less than 300 nm in an area of 100 micrometers by 100 micrometers and less than 500 nm along a line of 2 millimeter length. The wafer may be cut to form x-ray window support structures, MEMS, or other micrometer sized structures.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: November 3, 2015
    Assignees: Brigham Young University, Moxtek, Inc.
    Inventors: Robert C. Davis, Richard Vanfleet, Kyle Zufeldt, Andrew L. Davis, Steven D. Liddiard
  • Grid voltage generation for x-ray tube
    Patent number: 9072154
    Abstract: An x-ray source for improved electron beam control, a smaller electron beam spot size, and a smaller x-ray spot size with reduced power supply size and weight. A method for improved electron beam control, a smaller electron beam spot size, and a smaller x-ray spot size with reduced power supply size and weight. Grid(s) may be used in an x-ray tube for improved electron beam control, a smaller electron beam spot size, and a smaller x-ray spot size. Control circuitry for the grid(s) can be disposed in electrically insulative potting. Light may be used to provide power and control signals to the control circuitry.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: June 30, 2015
    Assignee: MOXTEK, INC.
    Inventor: Dongbing Wang
  • Transformer network
    Patent number: 9072155
    Abstract: A transformer network circuit utilizing multiple smaller transformer cores, instead of a single, relatively larger core, for transferring electrical power while maintaining a smaller overall core mass.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: June 30, 2015
    Assignee: Moxtek, Inc.
    Inventor: Dongbing Wang
  • Compact X-ray source
    Patent number: 8995621
    Abstract: A compact x-ray source can include a circuit (10) providing reliable voltage isolation between low and high voltage sides (21, 23) of the circuit while allowing AC power transfer between the low and high voltage sides of the circuit to an x-ray tube electron emitter (43). Capacitors (11, 12) can provide the isolation between the low and high voltage sides of the circuit. The x-ray source (110) can utilize capacitors of a high voltage generator (67) to provide the voltage isolation. A compact x-ray source (110) can comprise a single transformer core (101) to transfer alternating current from two alternating current sources (104a, 104b) to an electron emitter (43) and a high voltage generator (107). A compact x-ray source (120) can comprise a high voltage sensing resistor (R1) disposed on a cylinder (41) of an x-ray tube (40).
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: March 31, 2015
    Assignee: Moxtek, Inc.
    Inventors: Dongbing Wang, Dave Reynolds
  • Inductor switching LC power circuit
    Patent number: 8995620
    Abstract: An electrical circuit for alternating current generation comprising a direct current control box, a first inductor, a second inductor, a first capacitor, and dual load connections. The direct current control box can alternately provide positive direct current to the first inductor then negative direct current to the second inductor. A second end of each inductor can be electrically connected together and electrically connected to a first load connection. A common connection on the control box can be electrically connected to a second load connection. The first load connection and the second load connection can be configured to be electrically connected across a load. A first capacitor can be electrically connected between the first load connection and the second load connection and configured to be electrically connected in series or parallel parallel with the load.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: March 31, 2015
    Assignee: Moxtek, Inc.
    Inventor: Dongbing Wang
  • Carbon composite support structure
    Patent number: 8989354
    Abstract: A support structure for x-ray windows including carbon composite ribs, comprising carbon fibers in a matrix. The support structure can comprise a support frame defining a perimeter and an aperture, a plurality of ribs comprising a carbon composite material extending across the aperture of the support frame and carried by the support frame, and openings between the plurality of ribs. A film can be disposed over, carried by, and span the plurality of ribs and disposed over and span the openings.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: March 24, 2015
    Assignees: Brigham Young University, Moxtek, Inc.
    Inventors: Robert C. Davis, Jason Mathew Lund, Andrew L. Davis, Steven D. Liddiard, Mike Zappe, Charles R. Jensen
  • Polymer layer on X-ray window
    Patent number: 8964943
    Abstract: An x-ray window includes a mount with a support frame and an aperture. A window film has a stack of layers including: a thin film layer comprising a material selected from the group consisting of diamond, graphene, diamond-like carbon, beryllium, and combinations thereof; a boron hydride layer; and a polymer layer. The window film, including the thin film layer, the boron hydride layer, and the polymer layer, extends across the aperture and is supported by the support frame. The window film is attached to the support frame, defining a sealed joint. The layers are capable of withstanding a differential pressure of at least 1 atmosphere. The window film is substantially transmissive to x-rays having an energy in the range of 100-20,000 electronvolts.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: February 24, 2015
    Assignee: Moxtek, Inc.
    Inventors: Steven Liddiard, Brian Taylor, Keith Decker, Jason Maynard
  • Durable, inorganic, absorptive, ultra-violet, grid polarizer
    Patent number: 8947772
    Abstract: An inorganic, dielectric grid polarizer device includes a stack of film layers disposed over a substrate. Each film layer is formed of a material that is both inorganic and dielectric. Adjacent film layers each have different refractive indices. At least one of the film layers is discontinuous to form a form-birefringent layer with an array of parallel ribs having a period less than 400 nm. Another layer, different than the form-birefringent layer, is formed of an optically absorptive material for the ultra-violet spectrum.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: February 3, 2015
    Assignee: Moxtek, Inc.
    Inventors: Eric Gardner, Bin Wang, Mark Davis, John D. Dredge, Jr.
  • X-ray tube high voltage sensing resistor
    Patent number: 8948345
    Abstract: A high voltage sensing resistor disposed on a cylinder that at least partially surrounds an evacuated enclosure of an x-ray tube.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: February 3, 2015
    Assignee: Moxtek, Inc.
    Inventor: Dongbing Wang
  • Soft X-Ray Curtain Tube
    Publication number: 20150016590
    Abstract: An elongated x-ray tube that can emit a linear curtain of x-rays along its length. Methods of using an elongated curtain of x-rays.
    Type: Application
    Filed: April 30, 2014
    Publication date: January 15, 2015
    Applicant: Moxtek, Inc.
    Inventors: Todd S. Parker, Sanjay Kamtekar, William Hansen
  • Multiple-size support for X-ray window
    Patent number: 8929515
    Abstract: An x-ray window including a support frame with a perimeter and an aperture. A plurality of ribs can extend across the aperture of the support frame and can be supported or carried by the support frame. Openings exist between ribs to allow transmission of x-rays through such openings with no attenuation of x-rays by the ribs. A film can be disposed over and span the ribs and openings. The ribs can have at least two different cross-sectional sizes including at least one larger sized rib with a cross-sectional area that is at least 5% larger than a cross-sectional area of at least one smaller sized rib.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: January 6, 2015
    Assignee: Moxtek, Inc.
    Inventor: Steven D. Liddiard
  • Polarizer edge rib modification
    Patent number: 8922890
    Abstract: A polarizer having a first surface bordered by an edge, including a standard region and a rib modification region. The standard region can include ribs having a standard characteristic. The standard region can be configured to polarize incident light. The rib modification region can be disposed along at least a segment of the edge of the substrate between the edge and at least a portion of the standard region. The rib modification region can comprise modified ribs modified from the standard characteristic to have a different characteristic.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: December 30, 2014
    Assignee: Moxtek, Inc.
    Inventors: Vern Bangerter, Mitchell R. Larsen
  • Fine pitch grid polarizer
    Patent number: 8913321
    Abstract: A grid polarizer including an array of groups of parallel elongated ribs disposed over a substrate. Each group of elongated ribs can comprise at least four ribs. Tops of two center ribs, at a center of each group, can be substantially the same elevational height and can be higher by more than 10 nm than tops of outer ribs of the groups. A region between adjacent ribs can have an index of refraction substantially equal to one. Some or all of the ribs can comprise polarizing wires disposed over substrate rods.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: December 16, 2014
    Assignee: Moxtek, Inc.
    Inventor: Mark Alan Davis
  • Wire grid polarizer with bordered sections
    Patent number: 8913320
    Abstract: A wire grid polarizer comprising a transparent substrate having a first surface. Multiple separate and discrete sections of wire grids can be disposed over the first surface and attached to the substrate, with a border between the sections including an opaque mask material. The mask material can be disposed over the first surface of the substrate. The mask material can be a material different than the wire grid material. The mask material can extend over or under a portion of an edge of the wire grid.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: December 16, 2014
    Assignee: Moxtek, Inc.
    Inventors: Mark Alan Davis, Vern W. Bangerter
  • High voltage circuit with arc protection
    Patent number: 8903047
    Abstract: A high voltage circuit with arc protection comprises a circuit board, having a top surface and a bottom surface, and includes at least two electronic components in a circuit. An enclosure substantially surrounds the circuit board. A voltage differential of at least 5000 volts can exist between the enclosure and at least one of the electronic components. At least one electrically conductive plate is disposed between the top surface of the circuit board and the enclosure, disposed between the bottom surface of the circuit board and the enclosure, electrically insulated from the circuit board and the enclosure, and provides arc protection between at least one electronic component on the circuit board and the enclosure.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: December 2, 2014
    Assignee: Moxtek, Inc.
    Inventors: Dongbing Wang, Dave Reynolds
  • X-RAY TUBE AND RECEIVER INSIDE MOUTH
    Publication number: 20140341346
    Abstract: A method and a device for low x-ray radiation dosage while taking x-ray images of a patient's teeth is disclosed. The method includes use of an x-ray source and receiver positioned at least partially inside the patient's mouth. The device includes an x-ray source and receiver attached together by a bite holder and configured to both be disposed at least partially inside the patient's mouth across a tooth while taking x-ray images of a patient's tooth.
    Type: Application
    Filed: April 9, 2014
    Publication date: November 20, 2014
    Applicant: Moxtek, Inc.
    Inventors: Samuel Soonho Lee, Victor Armando Tirado, David S. Crawford