Patents by Inventor David Whittum

David Whittum 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: 10314151
    Abstract: Man-portable radiation generation sources and systems that may be carried by hand to a site of interest by one or two people, are disclosed. Methods of use of such sources and systems are also disclosed. Battery operated radiation generation sources, air cooled radiation generation sources, and charged particle accelerators, are also disclosed. A radiation generation source, a radiation scanning system, and a target assembly comprising target material having a thickness of less than 0.20 mm are also disclosed.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: June 4, 2019
    Assignee: Varex Imaging Corporation
    Inventors: David Whittum, James E. Clayton, George Merdinian
  • Patent number: 9746581
    Abstract: Compact, dual energy radiation scanning systems are described comprising two particle beam accelerators, each configured to accelerate charged particles to different energies, positioned parallel to a direction of movement of an object to be inspected. The accelerator may be positioned perpendicular to a plane of the conveying system, instead. Bend magnet systems bend each charged particle beam toward a respective target. Alternatively, a single dual energy accelerator capable of accelerating charged particles to at least two different energies is positioned parallel to the direction of movement of the object, or perpendicular to a plane of the conveying system. A single bend magnet system is provided to bend each accelerated charged particle beam toward the same target. The particle beams may be bent through an orbit chamber. Two separate passages may be defined through at least part of the orbit chamber, one for charged particles having each energy.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: August 29, 2017
    Assignee: VAREX IMAGING CORPORATION
    Inventors: David Whittum, James E. Clayton
  • Publication number: 20160345418
    Abstract: Man-portable radiation generation sources and systems that may be carried by hand to a site of interest by one or two people, are disclosed. Methods of use of such sources and systems are also disclosed. Battery operated radiation generation sources, air cooled radiation generation sources, and charged particle accelerators, are also disclosed. A radiation generation source, a radiation scanning system, and a target assembly comprising target material having a thickness of less than 0.20 mm are also disclosed.
    Type: Application
    Filed: May 12, 2015
    Publication date: November 24, 2016
    Inventors: David WHITTUM, James E. CLAYTON, George MERDINIAN
  • Patent number: 9030134
    Abstract: Man-portable radiation generation sources and systems that may be carried by hand to a site of interest by one or two people, are disclosed. Methods of use of such sources and systems are also disclosed. Battery operated radiation generation sources, air cooled radiation generation sources, and charged particle accelerators, are also disclosed. A radiation generation source, a radiation scanning system, and a target assembly comprising target material having a thickness of less than 0.20 mm are also disclosed.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: May 12, 2015
    Assignee: Vanan Medical Systems, Inc.
    Inventors: David Whittum, James E. Clayton, George Merdinian
  • Publication number: 20140321613
    Abstract: Compact, dual energy radiation scanning systems are described comprising two particle beam accelerators, each configured to accelerate charged particles to different energies, positioned parallel to a direction of movement of an object to be inspected. The accelerator may be positioned perpendicular to a plane of the conveying system, instead. Bend magnet systems bend each charged particle beam toward a respective target. Alternatively, a single dual energy accelerator capable of accelerating charged particles to at least two different energies is positioned parallel to the direction of movement of the object, or perpendicular to a plane of the conveying system. A single bend magnet system is provided to bend each accelerated charged particle beam toward the same target. The particle beams may be bent through an orbit chamber. Two separate passages may be defined through at least part of the orbit chamber, one for charged particles having each energy.
    Type: Application
    Filed: July 14, 2014
    Publication date: October 30, 2014
    Inventors: David Whittum, James E. Clayton
  • Patent number: 8779398
    Abstract: Compact, dual energy radiation scanning systems are described comprising two particle beam accelerators, each configured to accelerate charged particles to different energies, positioned parallel to a direction of movement of an object to be inspected. The accelerator may be positioned perpendicular to a plane of the conveying system, instead. Bend magnet systems bend each charged particle beam toward a respective target. Alternatively, a single dual energy accelerator capable of accelerating charged particles to at least two different energies is positioned parallel to the direction of movement of the object, or perpendicular to a plane of the conveying system. A single bend magnet system is provided to bend each accelerated charged particle beam toward the same target. The particle beams may be bent through an orbit chamber. Two separate passages may be defined through at least part of the orbit chamber, one for charged particles having each energy.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: July 15, 2014
    Assignee: Varian Medical Systems, Inc.
    Inventors: David Whittum, James E. Clayton
  • Publication number: 20130142305
    Abstract: Compact, dual energy radiation scanning systems are described comprising two particle beam accelerators, each configured to accelerate charged particles to different energies, positioned parallel to a direction of movement of an object to be inspected. The accelerator may be positioned perpendicular to a plane of the conveying system, instead. Bend magnet systems bend each charged particle beam toward a respective target. Alternatively, a single dual energy accelerator capable of accelerating charged particles to at least two different energies is positioned parallel to the direction of movement of the object, or perpendicular to a plane of the conveying system. A single bend magnet system is provided to bend each accelerated charged particle beam toward the same target. The particle beams may be bent through an orbit chamber. Two separate passages may be defined through at least part of the orbit chamber, one for charged particles having each energy.
    Type: Application
    Filed: June 8, 2012
    Publication date: June 6, 2013
    Inventors: David Whittum, James E. Clayton
  • Patent number: 8198587
    Abstract: Compact, dual energy radiation scanning systems are described comprising two particle beam accelerators, each configured to accelerate charged particles to different energies, positioned parallel to a direction of movement of an object to be inspected. The accelerator may be positioned perpendicular to a plane of the conveying system, instead. Bend magnet systems bend each charged particle beam toward a respective target. Alternatively, a single dual energy accelerator capable of accelerating charged particles to at least two different energies is positioned parallel to the direction of movement of the object, or perpendicular to a plane of the conveying system. A single bend magnet system is provided to bend each accelerated charged particle beam toward the same target. The particle beams may be bent through an orbit chamber. Two separate passages may be defined through at least part of the orbit chamber, one for charged particles having each energy.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: June 12, 2012
    Assignee: Varian Medical Systems, Inc.
    Inventors: David Whittum, James E. Clayton
  • Publication number: 20120134467
    Abstract: Man-portable radiation generation sources and systems that may be carried by hand to a site of interest by one or two people, are disclosed. Methods of use of such sources and systems are also disclosed. Battery operated radiation generation sources, air cooled radiation generation sources, and charged particle accelerators, are also disclosed. A radiation generation source, a radiation scanning system, and a target assembly comprising target material having a thickness of less than 0.20 mm are also disclosed.
    Type: Application
    Filed: February 6, 2012
    Publication date: May 31, 2012
    Inventors: David Whittum, James E. Clayton, George Merdinian
  • Patent number: 8143816
    Abstract: An apparatus for use in a process to regulate power for a particle accelerator includes a first circulator, a second circulator, a tee coupled between the first and the second circulator, and a tuner coupled to the tee. An apparatus for use in a process to regulate power for a particle accelerator includes a first circulator, a second circulator, a 3-dB coupler coupled between the first and the second circulator, and a tuner coupled to the 3-dB coupler.
    Type: Grant
    Filed: August 13, 2008
    Date of Patent: March 27, 2012
    Assignee: Varian Medical Systems Technologies, Inc.
    Inventors: James Clayton, Carsten Weil, Wolfgang Arnold, David Whittum
  • Patent number: 8111025
    Abstract: Man-portable radiation generation sources and systems that may be carried by hand to a site of interest by one or two people, are disclosed. Methods of use of such sources and systems are also disclosed. Battery operated radiation generation sources, air cooled radiation generation sources, and charged particle accelerators, are also disclosed. A radiation generation source with a target less than 0.20 mm is also disclosed.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: February 7, 2012
    Assignee: Varian Medical Systems, Inc.
    Inventors: David Whittum, James E. Clayton, George Merdinian
  • Publication number: 20100127169
    Abstract: Compact, dual energy radiation scanning systems are described comprising two particle beam accelerators, each configured to accelerate charged particles to different energies, positioned parallel to a direction of movement of an object to be inspected. The accelerator may be positioned perpendicular to a plane of the conveying system, instead. Bend magnet systems bend each charged particle beam toward a respective target. Alternatively, a single dual energy accelerator capable of accelerating charged particles to at least two different energies is positioned parallel to the direction of movement of the object, or perpendicular to a plane of the conveying system. A single bend magnet system is provided to bend each accelerated charged particle beam toward the same target. The particle beams may be bent through an orbit chamber. Two separate passages may be defined through at least part of the orbit chamber, one for charged particles having each energy.
    Type: Application
    Filed: November 24, 2008
    Publication date: May 27, 2010
    Inventors: David Whittum, James E. Clayton
  • Publication number: 20100039051
    Abstract: An apparatus for use in a process to regulate power for a particle accelerator includes a first circulator, a second circulator, a tee coupled between the first and the second circulator, and a tuner coupled to the tee. An apparatus for use in a process to regulate power for a particle accelerator includes a first circulator, a second circulator, a 3-dB coupler coupled between the first and the second circulator, and a tuner coupled to the 3-dB coupler.
    Type: Application
    Filed: August 13, 2008
    Publication date: February 18, 2010
    Applicant: Varian Medical Systems Technologies, Inc.
    Inventors: James Clayton, Carsten Weil, Wolfgang Arnold, David Whittum
  • Publication number: 20090140177
    Abstract: Man-portable radiation generation sources and systems that may be carried by hand to a site of interest by one or two people, are disclosed. Methods of use of such sources and systems are also disclosed. Battery operated radiation generation sources, air cooled radiation generation sources, and charged particle accelerators, are also disclosed. A radiation generation source with a target less than 0.20 mm is also disclosed.
    Type: Application
    Filed: October 14, 2008
    Publication date: June 4, 2009
    Inventors: David Whittum, James Clayton, George Merdinian
  • Patent number: 7339320
    Abstract: An accelerator for accelerating a particle beam includes a main body having a plurality of electromagnetic cavities coupled in series, and a first coupling body having a first side cavity coupled to one of the electromagnetic cavities through a first opening, and to another of the electromagnetic cavities through a second opening, wherein the first opening and the second opening have different configurations. The accelerator further includes a pair of conductive capacitively coupled noses secured to side walls of the first coupling body, wherein the pair of noses have equal lengths.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: March 4, 2008
    Assignee: Varian Medical Systems Technologies, Inc.
    Inventors: Gard E. Meddaugh, Mark E. Trail, David Whittum
  • Publication number: 20070215813
    Abstract: An energy switch for use in a radiation system includes an element located within a structure having a cavity, the element capable of being biased by a magnetic field, and a device for generating the magnetic field to thereby bias the element. An energy switch for use in a radiation system includes a structure forming at least a part of a cavity, an element coupled to the structure and located outside the cavity, the element capable of being biased by a magnetic field, and a device for generating the magnetic field to bias the element. A method for use in a radiation procedure includes providing a first magnetic field, and using the first magnetic field to create a first bias for an element that is located outside a cavity of an accelerator, thereby changing en electric field associated with the accelerator.
    Type: Application
    Filed: March 17, 2006
    Publication date: September 20, 2007
    Inventors: David Whittum, Eiji Tanabe
  • Publication number: 20050134203
    Abstract: A method for generating an electron beam includes prescribing a location, and generating an envelope of electrons, the envelope having a waist, wherein the generating is performed such that the waist of the envelope is at or adjacent to the prescribed location. A device for generating an electron beam includes a gun source for generating electrons, and a plurality of electromagnetic cavities coupled in series to form a body, the electromagnetic cavities configured to accelerate at least some of the electrons to create a beam of electrons at an energy level having a value between 5 MeV and 20 MeV, the beam of electrons having a cross sectional dimension that is 0.02 ? (or 2 mm) or less.
    Type: Application
    Filed: October 1, 2004
    Publication date: June 23, 2005
    Applicant: Varian Medical Systems Technologies, Inc.
    Inventors: Arthur Salop, David Whittum, Michael Kauffman, Mark Trail, Gard Meddaugh