Patents Represented by Attorney Edward L. Kochey, Jr.

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  • Self-locking pressed in insert arrangement
    Patent number: 5295773
    Abstract: Insert 16 has four radial slots 26 through shoulder 22 and wall 28. It is press fit within smooth hole 32 in case 10. Internal threads 24 are strained in the locking range 36 where bolt 18 is locked.
    Type: Grant
    Filed: May 17, 1993
    Date of Patent: March 22, 1994
    Assignee: United Technologies Corporation
    Inventor: Robert M. Amoroso
  • Gas turbine engine test cell
    Patent number: 5293775
    Abstract: Inlet vortex ingestion is deterred when testing an engine (12) in a test cell (10). Ramp structures (26) are installed on the walls blocking 30% to 50% of the flow area. The apex (42) of these ramps is located adjacent the engine inlet (24) with the upstream faces (46) at about a 45.degree. angle.
    Type: Grant
    Filed: November 2, 1992
    Date of Patent: March 15, 1994
    Assignee: United Technologies Corporation
    Inventors: Terry A. Clark, Mark W. Peszko, John H. Roberts, George L. Muller, John P. Nikkanen
  • Convertible plug nozzle
    Patent number: 5292069
    Abstract: A plug nozzle is convertible to and from an open nozzle by moving several components. The convergent flap moves between an outboard convergent flap position and a central plug position. Divergent flaps, hinged to the convergent flaps, move between the outboard divergent flap position and a central contacting position within the plug. Plug surface flaps are moved to the inboard position where they form the plug surface from an outboard position.
    Type: Grant
    Filed: July 7, 1993
    Date of Patent: March 8, 1994
    Assignee: United Technologies Corporation
    Inventor: Edward B. Thayer
  • Reformer support arrangement
    Patent number: 5275632
    Abstract: A gas fired reformer includes a plurality of bayonet type reformers, each having a vertical outlet tube posted on a common outlet header. Three outlet header continuation members pass downwardly through the reformer shell to a ground support, at least one of these being a reformer gas outlet line.
    Type: Grant
    Filed: October 7, 1991
    Date of Patent: January 4, 1994
    Assignee: International Fuel Cells Corporation
    Inventor: Thomas J. Corrigan
  • Reformer seal plate
    Patent number: 5264008
    Abstract: A seal plate within a gas fixed reformer divides an upper plenum and a lower plenum to force combustion products along the heat exchange surface of the reactors. The seal plate has a sealed horizontal central portion and a vertical perpendicular portion extending to the bottom of the shell. The entire seal plate is exposed to gas in the discharge plenum, whereby differential expansion of various seal plate portions is avoided.
    Type: Grant
    Filed: October 7, 1991
    Date of Patent: November 23, 1993
    Assignee: United Technologies Corporation
    Inventor: Thomas J. Corrigan
  • Convergent-to-divergent seal hinge for a convergent/divergent nozzle
    Patent number: 5238189
    Abstract: A hinge for connecting a convergent seal and a divergent seal in a thrust vectoring nozzle has an intermediate yoke. This yoke carries seals contacting the convergent and divergent seals. The axis of the transverse and radial pins are longitudinally offset. The convergent seal slides in an arcuate path around the axis of the transverse pin, while the divergent seal slides in a arcuate path around the axis of the radial pin. Further, the radial pin is located toward the divergent seal side of the transverse pin.
    Type: Grant
    Filed: July 16, 1992
    Date of Patent: August 24, 1993
    Assignee: United Technologies Corporation
    Inventor: W. Kevin Barcza
  • Flame failure detection method
    Patent number: 5235802
    Abstract: A dual rotor gas generator of a gas turbine generator is fired with fuel delivery based on a fuel demand signal. Actual air flow is determined by sensing the low pressure rotor speed. A ratio of the fuel demand and actual air flow is calculated. Actual fuel flow is not used. Loss of flame is detected based on a fuel/air ratio as compared to a preselected value.
    Type: Grant
    Filed: June 8, 1992
    Date of Patent: August 17, 1993
    Assignee: United Technologies Corporation
    Inventors: B. Melvin Barnum, Russell C. Bell
  • Internally damped blades
    Patent number: 5232344
    Abstract: A twisted compressor or fan hollow blade is damped by an internal loose slug. The slug contacts the skin of the blade at two transversely spaced locations. This slug is located with its center of gravity eccentric of a radial line through the contact location.
    Type: Grant
    Filed: January 17, 1992
    Date of Patent: August 3, 1993
    Assignee: United Technologies Corporation
    Inventor: Yehia M. El-Aini
  • Convergent/divergent nozzle with seal centering
    Patent number: 5232158
    Abstract: A divergent seal is located on the gas side of a convergent/divergent nozzle between adjacent divergent flaps. A scissors linkage both centers the seal between the flaps and restrains the seal against the flaps.
    Type: Grant
    Filed: August 11, 1992
    Date of Patent: August 3, 1993
    Assignee: United Technologies Corporation
    Inventor: W. Kevin Barcza
  • Gas turbine blade seal
    Patent number: 5228835
    Abstract: An underplatform damper contact portion 54 is rigid, and provides a loose seal between the underplatform cooling air 46 and the gas stream 40. At the aft end of the blade platform the pressure difference increases and a more effective seal is provided by the snap-in flexible seal 71.
    Type: Grant
    Filed: November 24, 1992
    Date of Patent: July 20, 1993
    Assignee: United Technologies Corporation
    Inventor: Wieslaw A. Chlus
  • Modulated gas turbine cooling air
    Patent number: 5224332
    Abstract: Cooling air to the 1-2 turbine stage seal is supplied in parallel with air to the second vane from a plenum. A modulatable valve in the supply line to the plenum regulates air flow in response to a sensed temperature in the 1-2 seal area at high sensed speeds. Valve and thermocouples are checked for proper operation. Immediate alerts and maintenance messages are established along with fail safe operating conditions upon fault detection. Over cooling of the seal area during low power operation, in anticipation of a power increase, is used to improve low cycle fatigue life of the turbine disk and seal runner.
    Type: Grant
    Filed: April 17, 1992
    Date of Patent: July 6, 1993
    Inventors: Frederick M. Schwarz, David J. Candelori, Richard D. Brooke
  • Centrifugal pump fuel system
    Patent number: 5220793
    Abstract: A centrifugal pump has a rising characteristic at low flows, leading to pressure pulsations in the fuel system at low flow. A pressure difference regulating valve at the pump discharge has a frequency response such that the valve does not significantly move in response to the pulsations. The valve responds to less rapid changes, thereby avoiding high pressure loss at high flows.
    Type: Grant
    Filed: June 29, 1992
    Date of Patent: June 22, 1993
    Assignee: United Technologies Corporation
    Inventors: Michael E. McGlone, Louis J. Larkin, Rodney O. Johnson, Kurt A. Moeller
  • Stator vane damper
    Patent number: 5215432
    Abstract: The vane platform 14 of each vane 12 has an inwardly extending foot 14. A resilient spring damper 24 extends from the base end 28 of the foot and is biased against the platform 14 at a remote contact location 32.
    Type: Grant
    Filed: July 11, 1991
    Date of Patent: June 1, 1993
    Assignee: United Technologies Corporation
    Inventors: Raymond A. Pickering, William A. Thomson
  • Flap hinge arrangement for a convergent/divergent nozzle
    Patent number: 5215256
    Abstract: A divergent flap hinge seal for a thrust vectoring nozzle is pivotally connected to the convergent flap, and the divergent flap is pivotally connected to this flap hinge seal An extension on the hinge seal sealingly overlies a recess in the divergent flap. The flap hinge seal is connected to the convergent flap by two pins and the divergent flap is connected to the flap hinge seal by a pin.
    Type: Grant
    Filed: July 16, 1992
    Date of Patent: June 1, 1993
    Inventor: W. Kevin Barcza
  • Divergent seal arrangement for a convergent/divergent nozzle
    Patent number: 5215257
    Abstract: The divergent seal of a thrust vectoring nozzle has an elongated corrugated stiffening sheet with a backbone secured to the air side. The backbone is stiff perpendicular to the sheet, but flexible in torsion. A face sheet secured only at the upstream end covers the gas side of the stiffening sheet.
    Type: Grant
    Filed: July 16, 1992
    Date of Patent: June 1, 1993
    Assignee: United Technologies Corporation
    Inventor: W. Kevin Barcza
  • Compressor vane lock
    Patent number: 5211537
    Abstract: Variable compressor vanes are locked into a selected position after testing. The usual sync ring and vane arms are removed. A vane lock joins adjacent vanes locking them into the selected position.
    Type: Grant
    Filed: March 2, 1992
    Date of Patent: May 18, 1993
    Assignee: United Technologies Corporation
    Inventors: Todd A. Langston, Kevin B. McDonnell, Thomas J. McCarty
  • Aircraft reverser port door
    Patent number: 5209432
    Abstract: Doors sealing radial flow ports are opened by rotation which slides the doors away from the ports. All doors rotate about a longitudinal centerline of the aircraft. Each flow port has its inlet seal surface with a center of curvature offset from the longitudinal axis. Rotation of the door toward the open position relieves and releases contact between the door and the port inlet seal surface.
    Type: Grant
    Filed: July 2, 1992
    Date of Patent: May 11, 1993
    Assignee: United Technologies Corporation
    Inventors: Gary D. Roberge, Edward B. Thayer
  • Clip attachment for combustor panel
    Patent number: 5201799
    Abstract: A U-shaped clip secures the posts of floating segments to a surrounding shell. The inboard leg has a slot engaging the post and is compressed against the shell. The outboard leg has a hole engaging the post to resist backward movement of the clip. A resilient finger on the clip abuts the post in the installed position, causing the clip to stay with the post as it moves with respect to the shell.
    Type: Grant
    Filed: May 20, 1991
    Date of Patent: April 13, 1993
    Assignee: United Technologies Corporation
    Inventor: Donald E. Johnson
  • Gas turbine engine arrangement
    Patent number: 5201796
    Abstract: A separate low pressure shaft and a high pressure shaft are axially aligned. The low pressure shaft is at one end and carries the low pressure compressor and the low pressure turbine, and is connected to the electric generator. The high pressure shaft carries the high pressure compressor and the high pressure turbine. Only three bearing housings are required. Parts of the casing are horizontally split to simplify maintenance.
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: April 13, 1993
    Assignee: United Technologies Corporation
    Inventors: Robert L. Glinski, Gary M. Perkins
  • Fabrication of repair method for an integrally bladed rotor
    Patent number: 5197190
    Abstract: A blade is formed from solid stock, leaving a box of material around the block. Instead of removing the box at this time, the entire box is bonded to a blade stub. The box facilitates handling and energy transfer for the bonding operation. Thereafter the box is removed from the bonded blade.
    Type: Grant
    Filed: March 4, 1991
    Date of Patent: March 30, 1993
    Assignee: United Technologies Corporation
    Inventor: Kenneth D. Coolidge