Patents by Inventor David Arthur Spence

David Arthur Spence 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: 7835502
    Abstract: An x-ray target pedestal assembly and a method of protecting the x-ray target from breaking down as a result of the extreme heat that is produced when an electron beam is aimed at the target to produce x-rays. The target is submerged in cooling fluid and is rotated by a constant flow of the cooling fluid over and around the target in order to dissipate heat. The fluid is guided by integrated flow diverters in the target cover. The target may also be protectively coated either in its entirety or along the electron beam path in order to further protect it from the heat of the electron beam impact or from breakdown as a result of attack of free radicals or other chemically reactive components of the cooling fluid which are produced in the extreme target environment.
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: November 16, 2010
    Assignee: Tomotherapy Incorporated
    Inventors: David Arthur Spence, Richard Cary Schmidt
  • Patent number: 7801269
    Abstract: A radiation treatment system and method of commissioning the system, the system including a gantry, a radiation source operable to produce a beam of radiation, and a measurement device. The measurement device is physically connected to the gantry, and includes a multi-dimensional scanning arm, and a detector. The method includes generating radiation from the radiation source, passing the radiation through an attenuation block, and receiving radiation with the measurement device. The measurement device is positioned such that it is not in contact with water. Data is generated from the radiation received and the system is commissioned using the generated data to match system characteristics to a previously defined standard.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: September 21, 2010
    Assignee: TomoTherapy Incorporated
    Inventors: Robert L. Cravens, Kenneth J. Ruchala, Gustavo H. Olivera, Daniel Lucas, Andrea Cox, Paul J. Reckwerdt, Cleber De Souza, Douglas Henderson, David Arthur Spence
  • Publication number: 20100202593
    Abstract: An x-ray target pedestal assembly and a method of protecting the x-ray target from breaking down as a result of the extreme heat that is produced when an electron beam is aimed at the target to produce x-rays. The target is submerged in cooling fluid and is rotated by a constant flow of the cooling fluid over and around the target in order to dissipate heat. The fluid is guided by integrated flow diverters in the target cover. The target may also be protectively coated either in its entirety or along the electron beam path in order to further protect it from the heat of the electron beam impact or from breakdown as a result of attack of free radicals or other chemically reactive components of the cooling fluid which are produced in the extreme target environment.
    Type: Application
    Filed: February 11, 2009
    Publication date: August 12, 2010
    Applicant: TOMOTHERAPY INCORPORATED
    Inventors: David Arthur Spence, Richard Cary Schmidt