Patents Represented by Attorney Edward L. Kochey, Jr.

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  • Method of making monolithic solid oxide fuel cell stack
    Patent number: 4857420
    Abstract: The fuel cell stack is made from two basic finished component subassemblies which are stacked repetitively atop each other in alternating fashion. One of the components is an electrode subassembly, and the other is a separator plate-flow field subassembly. The subassemblies are formed from several different material layers which are sintered and shrunk to operating size and density prior to the stack being assembled. The finished subassemblies are layered atop each other to form the stack and then heated to an elevated subsintering temperature and subjected to a light compressive load so that abutting surfaces of the adjacent subassemlies are creep flattened into intimate adherent contact with each other thereby forming a monolithic stack assembly.
    Type: Grant
    Filed: October 13, 1987
    Date of Patent: August 15, 1989
    Assignee: International Fuel Cell Corporation
    Inventors: Donald L. Maricle, Richard F. Buswell
  • Fuel cell clean waste water discharge system
    Patent number: 4855192
    Abstract: Excess or waste water produced by the operation of a fuel cell power plant is discharged directly into the ambient environment by a discharge system which ensures that only the cleanest water in the system can be discharged. The discharge system is controlled by the amount of water in the power plant water storage tank. The storage tank receives contaminated water from the power plant, and also receives clean water from demineralizing beds. When the quantity of water in the storage tank exceeds a predetermined amount, the clean incoming water from the demineralizing beds is diverted into a drain passage where it is drained from the power plant. The drainage of clean water stops when the amount of water in the storage tank drops below the predetermined amount.
    Type: Grant
    Filed: July 8, 1988
    Date of Patent: August 8, 1989
    Assignee: International Fuel Cells Corporation
    Inventor: Albert P. Grasso
  • Beam steering mirror construction
    Patent number: 4854687
    Abstract: A beam steering mirror is mounted in a frame which is centrally supported by a two axis pivot point. Two torque motors are each connected to the frame with parallel diagonally opposed connecting members. The connecting members, when in the form of cables, are pretensioned an amount greater than the dynamic slewing force.
    Type: Grant
    Filed: February 4, 1988
    Date of Patent: August 8, 1989
    Assignee: United Technologies Corporation
    Inventor: Keith Fletcher
  • Optical control system
    Patent number: 4854219
    Abstract: An optical actuator position demand signal through optic fiber 14 is focused on one side 32 of optical fluidic interface 16. A second optical signal through optic fiber 56 is attentuated 50 in proportion to actuator 38 position and focused on a second side 34 of the interface 16. Amplified fluidic signals 68, 70 drive the actuator until the demand signal 14 and actual signal 58 are in balance.
    Type: Grant
    Filed: June 10, 1988
    Date of Patent: August 8, 1989
    Assignee: United Technologies Corporation
    Inventors: Bruce D. Hockaday, Kenneth D. Taylor
  • Rotor balance system
    Patent number: 4848182
    Abstract: A balance ring (18) which is shrunk fit within each disk (12) of a rotor is selectively ground for detail balance. A plurality of openings (20) through the outer edge of the balance ring receive weights during the asssembly balance of the rotor. A snap ring (42) retains the weights within the openings.
    Type: Grant
    Filed: September 8, 1987
    Date of Patent: July 18, 1989
    Assignee: United Technologies Corporation
    Inventor: Rudolph J. Novotny
  • Reformer tube heat transfer device
    Patent number: 4847051
    Abstract: Heat is more efficiently transferred to the catalyst tubes in a fuel cell power plant reformer by mounting sleeves about the individual catalyst tubes. The sleeves define helical hot gas flow paths on the outside of the catalyst tubes. Adjacent flow paths are separated from each other by arcuate ribs between the tubes and sleeves that provide line contact with the outer surface of the tubes for improved heat transfer. The ribs may be formed with circular rods attached to the tubes or sleeves, or by helical grooves with semi-circular configurations formed in the sleeves. Approximately fifty percent greater heat transfer can be achieved using the line contact ribs to form the hot gas flow paths. The sleeves, tubes and ribs are all made of metal.
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: July 11, 1989
    Assignee: International Fuel Cells Corporation
    Inventor: Edmund K. Parenti, Jr.
  • Combustor dome heat shield
    Patent number: 4843825
    Abstract: An annular combustor has a plurality of fuel injectors 14, each supporting a heat shield 30. Each shield has an overlap portion 42 deflecting cooling air passing between the shields, thereby avoiding a curtain of air between the flames of adjacent fuel injectors.
    Type: Grant
    Filed: May 16, 1988
    Date of Patent: July 4, 1989
    Assignee: United Technologies Corporation
    Inventor: Jim A. Clark
  • Magnet wire oven control apparatus
    Patent number: 4839818
    Abstract: A magnet wire oven for an in-line drawing fabrication process is controlled by means of a local operator control station having a plurality of menu screens stored therein for operator call-up and control via a remote controller for controlling a plurality of oven parameters. The remote controller is located in an output of the way location so as to efficiently utilize floorspace while at the same time controlling a large number of parameters in one main controller unit. The local operator station comprises a local signal processor, a keyboard, a display and an input/output port. The remote controller comprises a remote signal processor, a multiplexer and a plurality of analog loop controllers. The remote controller may also include either analog or digital input/output devices or both.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: June 13, 1989
    Assignee: Essex Group, Inc.
    Inventor: James L. Phillips
  • Static regenerative fuel cell system for use in space
    Patent number: 4839247
    Abstract: The cell stack can be operated as a fuel cell stack or as an electrolysis cell stack. The stack consists of a series of alternate fuel cell subassemblies with intervening electrolysis cell subassemblies, and interspersed cooling plates. The water produced and consumed in the two modes of operation migrates between adjacent cell subassemblies. The component plates are annular with a central hydrogen plenum and integral internal oxygen manifolds. No fluid pumps are needed to operate the stack in either mode.
    Type: Grant
    Filed: November 13, 1987
    Date of Patent: June 13, 1989
    Assignee: International Fuel Cells Corporation
    Inventors: Alexander H. Levy, Leslie L. VanDine, John C. Trocciola
  • Method of balancing a rotor
    Patent number: 4835827
    Abstract: A balance ring (18) which is shrunk fit within each disk (12) of a rotor is selectively ground for detail balance. A plurality of openings (20) through the outer edge of the balance ring receive weights during the assembly balance of the rotor. A snap ring (44) retains the weights within the openings. An eccentric inwardly extending raised area 26 throughout a substantial minority of the circumference provides for initial gross unbalance correction upon installation.
    Type: Grant
    Filed: August 5, 1988
    Date of Patent: June 6, 1989
    Assignee: United Technologies Corporation
    Inventor: John J. Marra
  • Turbine disk securing and removal apparatus
    Patent number: 4832574
    Abstract: A turbine disk assembly 20 has an extension including arms 34 and a groove 38. Nut 40 engages the groove and bears against the extension. A square head 48 on the nut fits a standard torque multiplying wrench and arms 34provide a reaction so that no adapter tool is required. Groove 38 permits pulling the disk assembly by use of the nut, and also allows sleeve 50 to hold the nut from loosening.
    Type: Grant
    Filed: February 12, 1988
    Date of Patent: May 23, 1989
    Assignee: United Technologies Corporation
    Inventors: Thornton G. Woodwell, Chandos E. Langston, Jr.
  • Method of fabricating an air cooled turbine blade
    Patent number: 4827587
    Abstract: A turbine blade is formed from an airfoil blade 10 having V-grooves 12 in the outer surface and indentations 26 in the inner surface. A slot 30 is machined at the root of the groove intersecting the slots, and providing a smooth flow path for the cooling air discharging along the blade surface.
    Type: Grant
    Filed: January 25, 1988
    Date of Patent: May 9, 1989
    Assignee: United Technologies Corporation
    Inventors: Kenneth B. Hall, Kenneth K. Landis
  • Locked threaded insert for high stress application
    Patent number: 4828441
    Abstract: A threaded insert 22 is restrained from rotation by deformation into a recess 28. The recess 28 is only located in line with a directional stress pattern 34 in the receiving member 18 whereby stress concentration is avoided at high stress locations.
    Type: Grant
    Filed: July 8, 1987
    Date of Patent: May 9, 1989
    Assignee: United Technologies Corporation
    Inventor: Thomas Frasca
  • Control method for a gas turbine engine
    Patent number: 4825639
    Abstract: When a stall is detected during high power operation, the engine is given one chance to recover without a change in bleed schedule. Should a second stall occur within 10 seconds the control system switches to an override bleed schedule for 51/2 minutes, or until throttle is reduced. This supplies a minimum adaquate thrust for a limited time.
    Type: Grant
    Filed: July 8, 1987
    Date of Patent: May 2, 1989
    Assignee: United Technologies Corporation
    Inventor: Leon Krukoski
  • Plugged inspection opening
    Patent number: 4825642
    Abstract: Plug 40 inserted in inspection opening 20 has an internal surface 42 conforming to interior surface 16 when properly oriented. Arm 46 secures the plug in the oriented position and acts against tapered boss 30 for removal of the plug.
    Type: Grant
    Filed: March 2, 1988
    Date of Patent: May 2, 1989
    Assignee: United Technologies Corporation
    Inventor: Leland J. Radtke
  • Fuel cell stack cooling system
    Patent number: 4824740
    Abstract: Fuel Cell stack coolant water is processed by moving the two-phase water/steam coolant exhaust through a steam separator wherein the water phase is separated from the steam phase. The water phase is then moved through a heat exchanger where its temperature is lowered to a subcooled level which is below the coolant operating temperature in the stack. A flow control valve is associated with the coolant heat exchanger to regulate water flow through and/or around the heat exchanger depending on the temperature of the water which leaves the steam separator. By subcooling the coolant before it reenters the stack, a lessening of electrolyte loss through evaporation is achieved. By eliminating steam condensation as a form of system heat rejection, system engineering is simplified and construction costs are lowered.
    Type: Grant
    Filed: May 9, 1988
    Date of Patent: April 25, 1989
    Assignee: International Fuel Cell Corporation
    Inventors: Martin L. Abrams, Daniel L. D'Aquila, Glenn W. Scheffler
  • Gas turbine engine oil drain slot
    Patent number: 4824327
    Abstract: A spillage oil drain from the volume between a conical hub and a disk is comprised of a radial slot in the edge of the hub flange where it abuts the disk.
    Type: Grant
    Filed: December 15, 1987
    Date of Patent: April 25, 1989
    Assignee: United Technologies Corporation
    Inventor: George F. Titterton, III
  • Piloting igniter for supersonic combustor
    Patent number: 4821512
    Abstract: A piloting fuel injector assembly for a supersonic ramjet engine has a cowl 24, 70 confining a pilot air portion of the airstream. A conical member 34, 74 produces a subsonic recirculation zone 30, 76 and a shock wave falling within the cowl. Pilot fuel injected 40, 82 upstream of the recirculation zone burns stoichiometrically. The exhaust 38, 86 from the cowl is sonic, producing a shock wave which facilitates ignition of the main fuel injected 46, 84 upstream of the cowl exhaust.
    Type: Grant
    Filed: May 5, 1987
    Date of Patent: April 18, 1989
    Assignee: United Technologies Corporation
    Inventors: Roy N. Guile, William T. Peschke
  • Inner turbine seal
    Patent number: 4820119
    Abstract: An inner turbine seal is formed of a full annular vane platform structure (32) and a full annulus seal land structure (60). These two structures are splined together (48, 50, 64) and piston ring (70) seals against leakage between the two structures. Radial differential growth between the structures is permitted. Vane platform structure (32) may therefore be designed to minimize stresses in the vane area (26, 28) while seal land structure (60) may be designed to minimize leakage through knife edge seals (22, 62).
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: April 11, 1989
    Assignee: United Technologies Corporation
    Inventor: Michael J. Joyce
  • Fastener with airflow opening
    Patent number: 4820097
    Abstract: Fastener 36 threaded to stud 32 carries disk 46 which retains panels 16. Cooling air 14 passes through an axial opening 34 cooling the center of the disk by impingement cooling. Uniformly spaced involute shaped openings 48 carry cooling air to cool the balance of the disk.
    Type: Grant
    Filed: March 18, 1988
    Date of Patent: April 11, 1989
    Assignee: United Technologies Corporation
    Inventors: Edwin V. Maeda, James R. Black