Patents Represented by Attorney Arthur L. Wade

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  • Circuit for maintaining the strength of an electrostatic field generated in a fluid mixture of varying dielectric strength
    Patent number: 4417971
    Abstract: The electrodes between which AC and DC electrostatic fields are sustained in a liquid mixture are connected to ground potential through rectifiers arranged to maintain the strength of the DC electrostatic field as the dielectric strength of the liquid mixture decreases.
    Type: Grant
    Filed: November 30, 1981
    Date of Patent: November 29, 1983
    Assignee: Combustion Engineering, Inc.
    Inventors: Charles R. Ferrin, Floyd L. Prestridge
  • System for dampening pulsations or oscillations in a force-balance instrument
    Patent number: 4413523
    Abstract: A force-balance pressure measuring instrument incorporates a fluid pressure couple. The couple constructively includes a fulcrumed beam. The primary element is connected to the force-balance beam through a proportional band adjustment having a leaf spring which is changed in effective length. At certain settings of the leaf spring in the proportional band adjustment, oscillations, or pulsations, of the fulcrumed beam are generated. A compensation beam is pivoted on the fulcrumed beam to respond to the pulsations or oscillations of the fulcrumed beam and absorb energy to reduce pulsations or oscillations.
    Type: Grant
    Filed: April 23, 1982
    Date of Patent: November 8, 1983
    Assignee: Combustion Engineering, Inc.
    Inventors: Kenneth W. Claxton, Lewis K. Harris
  • Sludge lance for nuclear steam generator
    Patent number: 4407236
    Abstract: A long, thin strip of spring steel functions as the support base for one or more capillary tubes. The strip and its attached capillary tubes are thrust through a handhole in the side of a vessel containing a tube bundle and diverted by a guide into predetermined open lanes formed by the tubes of the bundle. The forward ends of the capillary tubes are directed downward for the jetting of fluid under high pressure into a body of sludge collected between the tubes and on the upper side of the tubes and their tube sheet. The source of the fluid is connected to the rear ends of the capillary tubes as the supply of fluid under high pressure.
    Type: Grant
    Filed: September 21, 1981
    Date of Patent: October 4, 1983
    Assignee: Combustion Engineering, Inc.
    Inventors: Glen E. Schukei, Frank J. Formanek
  • Structure for aligning and butt-welding tube ends
    Patent number: 4405075
    Abstract: A fixture has an expandable section which is positioned opposite the junction of the two pipe ends. Actuation of the expandable section to the walls of the pipes. internally clamps the pipes into rigid axial alignment for welding the pipe ends together.
    Type: Grant
    Filed: May 11, 1981
    Date of Patent: September 20, 1983
    Assignee: Combustion Engineering, Inc.
    Inventor: Robert L. Roddy
  • Stoker backstop
    Patent number: 4398473
    Abstract: A wood-burning stoker grate is provided a barrier across its rear end functioning as an impact surface for fuel and foreign matter projected toward the rear of the stoker grate. The barrier is made up of two sections, each section formed of parts with the same configuration as parts used in the stoker grate.
    Type: Grant
    Filed: January 21, 1982
    Date of Patent: August 16, 1983
    Assignee: Combustion Engineering, Inc.
    Inventor: Dossie H. Loper
  • Coal beneficiation/combustion system
    Patent number: 4397248
    Abstract: A system receives raw coal which is routed through crushing, screening, pulverizing, classifying, and beneficiation stages with the de-mineralized fraction of the coal routed to a pulverized-coal-fired furnace, while the mineralized fraction is routed to a fluidized bed furnace.
    Type: Grant
    Filed: May 26, 1981
    Date of Patent: August 9, 1983
    Assignee: Combustion Engineering, Inc.
    Inventors: Arun K. Mehta, Richard W. Borio
  • Welded seal removal
    Patent number: 4385535
    Abstract: A metal cutting machine is remotely positioned and actuated to cut away a weld formed as a seal between two surfaces of a container which houses a nuclear environment. The cutter is guided to remove the weld of the seal to a predetermined depth which maintains the integrity of the sealed surfaces that the surfaces may be resealed by a weld.
    Type: Grant
    Filed: November 28, 1980
    Date of Patent: May 31, 1983
    Assignee: Combustion Engineering, Inc.
    Inventor: Joseph A. Tedder
  • Capacitance circuit for level measurement
    Patent number: 4383445
    Abstract: The circuit of a primary element capacitor is energized and arranged to produce a proximity signal not substantially affected by the conductivity of fluid-like material accumulated on the capacitor structure. The energization, circuit components, and capacitor insulation minimize the electrical characteristics of the material accumulation on the capacitor.
    Type: Grant
    Filed: January 29, 1981
    Date of Patent: May 17, 1983
    Assignee: Combustion Engineering, Inc.
    Inventors: Leon S. Siegel, Charles O. Holman
  • Droop correction structure and condensate control in sootblowers
    Patent number: 4380843
    Abstract: A long-stroke sootblower is mounted to extend over a fulcrum at the entrance to the furnace space. The track traversed by the end of the outer casing of the blower is sloped upward to the fulcrum in control of the vertical position of the nozzle-bearing end of the blower extended into the furnace space. Drain points on the blower remove condensate formed from the residual steam and that which may leak through the valve admitting steam to the feed tube of the blower structure.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: April 26, 1983
    Assignee: Combustion Engineering, Inc.
    Inventors: Robert P. Sullivan, Clyde L. Jacobs
  • Tool for inspecting defects in irregular weld bodies
    Patent number: 4368644
    Abstract: A tool for manipulating an ultrasonic inspection transducer is actuated to move the transducer over the surface of an irregular weld body. The weld body disclosed, joins the nozzle of a reactor vessel to its vessel, the irregularity of the weld body defined by the intersection of the two cylinders. The transducer is moved over the surface of the weld body and actuated to scan through a predetermined angle in relation to the changing aspect of the geometry of the weld body by a cam mounted at the pivoting center of the tool.
    Type: Grant
    Filed: May 26, 1981
    Date of Patent: January 18, 1983
    Assignee: Combustion Engineering, Inc.
    Inventors: Timothy H. Wentzell, Charles B. Innes, Jr.
  • Fluid pressure-tensioned slip joint for drilling riser
    Patent number: 4367981
    Abstract: A drilling riser between a subsea wellhead and a floating platform has a slip joint in its upper end. A chamber is formed within the slip joint and supplied fluid pressure to develop a tensioning force on the upper end of the riser as the floating platform cycles vertically under the influence of heave and tidal forces.
    Type: Grant
    Filed: June 29, 1981
    Date of Patent: January 11, 1983
    Assignee: Combustion Engineering, Inc.
    Inventor: Maurice S. Shapiro
  • Method for drying and burning viscous aqueous liquors which contain organics
    Patent number: 4363698
    Abstract: Sawdust is mixed with partially concentrated black liquor from pulp manufacture. The sawdust, coated with the solids of the black liquor, is dried by heated air. The sawdust, coated with organic and inorganic black liquor solids, is fed to the hearth of a chemical recovery boiler. Combustion of the char formed on the boiler hearth produces heat which causes additional organic material to pyrolize. The inorganic material combines to form molten smelt. The moisture-laden, heated air from the dryer is introduced into the boiler with the secondary air and the smelt is tapped off into an aqueous solution to form green liquor.
    Type: Grant
    Filed: October 30, 1981
    Date of Patent: December 14, 1982
    Assignee: Combustion Engineering, Inc.
    Inventors: Hugh W. Nelson, George J. Prohazka, Keith W. Morris
  • Tool for remotely installing equipment through an access opening
    Patent number: 4363592
    Abstract: A tool is essentially an extensible mechanical arm adapted on one end to support equipment in a hostile environment while the arm is manually manipulated from its second end in a benign environment. The arm is pivoted at the entrance to an area containing nuclear radiation with its end projected into the radiation area, and adapted to install and remove equipment.
    Type: Grant
    Filed: January 19, 1981
    Date of Patent: December 14, 1982
    Assignee: Combustion Engineering, Inc.
    Inventor: Joseph A. Tedder
  • Wide range noble gas radiation monitor
    Patent number: 4363972
    Abstract: A sample chamber has the noble gases of effluent first pumped through it from a nuclear process. A quantifying detector of noble gases in the effluent has a predetermined range. A control system is actuated by the detector at the setpoint of a predetermined count rate to terminate the flow of the effluent from the first pump to the sample chamber. A second pump is connected to the chamber to evacuate the chamber upon termination of the first flow into the chamber. A restricted passage is connected between the chamber and the effluent with which to draw the effluent through the chamber by the second pump for so long as the quantity of noble gases in the effluent is above the predetermined setpoint.
    Type: Grant
    Filed: April 10, 1980
    Date of Patent: December 14, 1982
    Assignee: Combustion Engineering, Inc.
    Inventors: Harry S. Kuhlman, Jeffrey R. Wyvill, III
  • Physical solvent for gas sweetening
    Patent number: 4360363
    Abstract: The alkanolpyridines, as physical solvents, compare favorably, as a family, with sulfolane in their absorption of hydrogen sulfide and mercaptans. The data show absorption differences of the alkanolpyridines diluted with water, as compared with the alkanolpyridines mixed with amine. Both sets of data indicate an absorption performance substantially equal to, or better than, the performance of sulfolane. The chemical structure of pyridine is shown below. This structure is shown with the understanding that the alkanolpyridines would have the propanol or carbinol radicals, which are also shown, or other alkanol radicals substituted at the 2, 3 or 4 position.
    Type: Grant
    Filed: February 16, 1982
    Date of Patent: November 23, 1982
    Assignee: Combustion Engineering, Inc.
    Inventors: Charles R. Ferrin, William P. Manning
  • System for recovery of sulfur dioxide in an MHD power plant
    Patent number: 4354354
    Abstract: The seed, in the form of K.sub.2 SO.sub.4, is fed into an MHD combustor, mechanically recovered, and recycled. Sulfur dioxide in the discharge of the MHD channel is recovered downstream by a fluidized bed of lime/limestone.
    Type: Grant
    Filed: August 25, 1980
    Date of Patent: October 19, 1982
    Assignee: Combustion Engineering, Inc.
    Inventors: Stanley R. Wysk, James P. Clark, III
  • Flux dam for submerged arc welding
    Patent number: 4348574
    Abstract: A dam, or barrier, structure is moved along the edge, or corner, of a workpiece to control the flow limits of molten material of arc welding. The dam structure provides a dimentionally stable groove at the edge of the workpiece surface into which is received granulated flux and positions the body of the flux along the edge, or corner, of the workpiece surface to function as a mold for the molten material, and, thereby, prevent the falling of the flowing material from the surface. The dam structure has the specific form of a continuous tread of segments which advances around parallel rollers to reform the retaining groove structure opposite the arc operation on the surface of the workpiece.
    Type: Grant
    Filed: June 13, 1980
    Date of Patent: September 7, 1982
    Assignee: Combustion Engineering, Inc.
    Inventors: John J. Barger, James R. Underwood
  • System for drying and burning viscous aqueous liquors which contain organics
    Patent number: 4347220
    Abstract: Sawdust is mixed with partially concentrated black liquor from pulp manufacture. The sawdust, coated with the solids of the black liquor, is dried by heated air. The sawdust, coated with organic and inorganic black liquor solids, is fed to the hearth of a chemical recovery boiler. Combustion of the char formed on the boiler hearth produces heat which causes additional organic material to pyrolize. The inorganic material combines to form molten smelt. The moisture-laden, heated air from the dryer is introduced into the boiler with the secondary air and the smelt is tapped off into an aqueous solution to form green liquor.
    Type: Grant
    Filed: June 27, 1980
    Date of Patent: August 31, 1982
    Assignee: Combustion Engineering, Inc.
    Inventors: Hugh W. Nelson, George J. Prohazka, Keith W. Morris
  • Elimination of potassium compounds from sodium-based pulped cycles
    Patent number: 4347102
    Abstract: The potassium compounds in heavy black liquor flowing in the recovery cycle are reduced by the introduction of magnesium nesosilicate to form magnesium potassium silicate which is voided from the system by filtration.
    Type: Grant
    Filed: April 2, 1981
    Date of Patent: August 31, 1982
    Assignee: Combustion Engineering, Inc.
    Inventor: Hugh W. Nelson
  • Gasified coal-fired system
    Patent number: 4346317
    Abstract: A downflow coal gasifier, supplied lime/limestone with the coal, removes sulfur and obviates the production of particulate matter in generating a clean, low BTU gas for the combustor of an MHD channel. Air for both the combustor of the MHD channel and the gasifier is heated by the discharged fluids from the channel.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: August 24, 1982
    Assignee: Combustion Engineering, Inc.
    Inventor: John H. Fernandes