Patents by Inventor James R. Powell

James R. Powell 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: 4643809
    Abstract: A process for electrochemically gasifying coal by establishing a flowing stream of coal particulate slurry, electrolyte and electrode members through a transverse magnetic field that has sufficient strength to polarize the electrode members, thereby causing them to operate in combination with the electrolyte to electrochemically reduce the coal particulate in the slurry. Such electrochemical reduction of the coal produces hydrogen and carbon dioxide at opposite ends of the polarized electrode members. Gas collection means are operated in conjunction with the process to collect the evolved gases as they rise from the slurry and electrolyte solution.
    Type: Grant
    Filed: October 25, 1985
    Date of Patent: February 17, 1987
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Thomas E. Botts, James R. Powell
  • Patent number: 4572285
    Abstract: A magnetically focused liquid drop radiator for application in rejecting rgy from a spacecraft, characterized by a magnetizable liquid or slurry disposed in operative relationship within the liquid droplet generator and its fluid delivery system, in combination with magnetic means disposed in operative relationship around a liquid droplet collector of the LDR. The magnetic means are effective to focus streams of droplets directed from the generator toward the collector, thereby to assure that essentially all of the droplets are directed into the collector, even though some of the streams may be misdirected as they leave the generator. The magnetic focusing means is also effective to suppress splashing of liquid when the droplets impinge on the collector.
    Type: Grant
    Filed: December 10, 1984
    Date of Patent: February 25, 1986
    Assignee: The United States of America as represented by the Department of Energy
    Inventors: Thomas E. Botts, James R. Powell, Roger Lenard
  • Patent number: 4370135
    Abstract: Upper and lower plaster study models are cast in sequence from impressions held in trays positioned over the same base former having a molding cavity dimensioned close to the final trimmed shape of the base portions of the study models. Tray alignments procedures utilized during the casting operations guide positioning of the trays to enable formation of study models that require minimal trimming.
    Type: Grant
    Filed: October 31, 1980
    Date of Patent: January 25, 1983
    Inventor: James R. Powell
  • Patent number: 4309249
    Abstract: A device for producing fissile material inside of fabricated nuclear elements so that they can be used to produce power in nuclear power reactors. Fuel elements, for example, of a LWR are placed in pressure tubes in a vessel surrounding a liquid lead-bismuth flowing columnar target. A linear-accelerator proton beam enters the side of the vessel and impinges on the dispersed liquid lead-bismuth columns and produces neutrons which radiate through the surrounding pressure tube assembly or blanket containing the nuclear fuel elements. These neutrons are absorbed by the natural fertile uranium-238 elements and are transformed to fissile plutonium-239. The fertile fuel is thus enriched in fissile material to a concentration whereby they can be used in power reactors. After use in the power reactors, dispensed depleted fuel elements can be reinserted into the pressure tubes surrounding the target and the nuclear fuel regenerated for further burning in the power reactor.
    Type: Grant
    Filed: October 4, 1979
    Date of Patent: January 5, 1982
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Meyer Steinberg, James R. Powell, Hiroshi Takahashi, Pierre Grand, Herbert Kouts
  • Patent number: 4226369
    Abstract: An apparatus and method for the destruction of particles entrained in a gas stream are disclosed. Destruction in the context of the subject invention means the fragmentation and/or vaporization of particles above a certain size limit. The subject invention contemplates destroying such particles by exposing them to intense bursts of laser light, such light having a frequency approximately equal to or less than the mean size of such particles. This invention is particularly adopted to the protection of turbine blades in open cycle coal-fired turbine systems. Means for introducing various chemical species and activating them by exposure to laser light are also disclosed.
    Type: Grant
    Filed: August 17, 1978
    Date of Patent: October 7, 1980
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Thomas E. Botts, James R. Powell
  • Patent number: 4085590
    Abstract: Method of producing high energy pressurized gas working fluid power from a low energy, low temperature heat source, wherein the compression energy is gained by using the low energy heat source to desorb hydrogen gas from a metal hydride bed and the desorbed hydrogen for producing power is recycled to the bed, where it is re-adsorbed, with the recycling being powered by the low energy heat source. In one embodiment, the adsorption-desorption cycle provides a chemical compressor that is powered by the low energy heat source, and the compressor is connected to a regenerative gas turbine having a high energy, high temperature heat source with the recycling being powered by the low energy heat source.
    Type: Grant
    Filed: January 5, 1976
    Date of Patent: April 25, 1978
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: James R. Powell, Francis J. Salzano
  • Patent number: 3969631
    Abstract: This invention relates generally to the production of gases, and more particularly to the production of tritium gas in a reliable long operating lifetime systems that employs solid lithium to overcome the heretofore known problems of material compatibility and corrosion, etc., with liquid metals. The solid lithium is irradiated by neutrons inside low activity means containing a positive (+) pressure gas stream for removing and separating the tritium from the solid lithium, and these means are contained in a low activity shell containing a thermal insulator and a neutron moderator.
    Type: Grant
    Filed: March 20, 1975
    Date of Patent: July 13, 1976
    Assignee: The United States of America as represented by the United States Energy Research and Development Administration
    Inventors: Warren E. Winsche, Francis T. Miles, James R. Powell