Patents Represented by Attorney Edward L. Kochey, Jr.

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  • Fuel cell power plant fuel control
    Patent number: 5009967
    Abstract: Fuel cell current is sensed (30) and during a transient, a feed forward demand signal (50) sent to the fuel flow regulator (58). A nominal desired reformer temperature is established for the new fuel cell current. This desired temperature signal (62) is dynamically compensated (64) to establish the operating temperature set point (72). A predominantly lead compensation (66) is achieved for a desired temperature increase and a predominantly lag compensation (68) for a desired temperature decrease. Increased reliance on the temperature as a result of the system input reduces reliance on the accuracy of fuel flow measurement and on the consistency of fuel heating value.
    Type: Grant
    Filed: October 24, 1989
    Date of Patent: April 23, 1991
    Assignee: International Fuel Cells Corporation
    Inventor: Glenn W. Scheffler
  • Spherical bearing link
    Patent number: 5005991
    Abstract: A truncated spherical ball enters a cavity in a link using an entry slot in the link away from the end of the link and axially extending toward the link arm. Passage of the rotated ball through the entry slot is prevented by excess thickness of the ball relative to slot width until the link is expanded by heating. Full bearing surface exists at the end and sides of the link cavity and bearing surfaces are not contacted while forcing a fit. The ball is secure from inadvertent removal.
    Type: Grant
    Filed: December 4, 1987
    Date of Patent: April 9, 1991
    Assignee: United Technologies Corporation
    Inventors: David E. Heumann, William G. Hoop
  • Axial compressor stator construction
    Patent number: 5004402
    Abstract: A split casing (10) of low, coefficient of expansion material, has internal upstream facing slots (12). A semicircular shroud ring (16), of high coefficient of expansion material, carries the vanes (18), and has a tongue (20) sliding within casing slot (12). Casing stop lugs (14) and shroud stop lugs (22) have mutually abuttable surfaces (70,72) to antirotate the shroud within the casing. The distance between abuttable surfaces of the casing is greater than the distance between abuttable surfaces of the shroud ring at room temperature, but the distance are the same at the long time operating temperature.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: April 2, 1991
    Assignee: United Technologies Corporation
    Inventors: Herbert L. Burchette, Lee E. Hansen, James C. West, Glen A. Nawrocki
  • Augmentor spray ring mount
    Patent number: 5001897
    Abstract: Support bracket (20) is secured to the augmentor housing (10). Spray ring adapter plate (18) is welded to the spray ring (14). Slider assembly (22) is formed of supporting part (32) bolted to the support bracket, and supported part (34) bolted to the adaptor. These parts slide with bushing (42) moveable in slot (40). Washer (46) is closely spaced from bosses (56) and (58) to take wear. Various bosses are located to preclude improper assembly, and boss (58) cooperates with end (26) of the support bracket to insure proper alignment with only a single bolt.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: March 26, 1991
    Assignee: United Technologies Corporation
    Inventor: Conrad R. Schultz
  • Elevator safety
    Patent number: 5002158
    Abstract: A safety braking disk (56) is secured to rope drive sheave (14). First (52) and second (54) safety brake assemblies each operate on opposing parallel sides of the disk. Brake pads (60) are resiliently placed into engagement upon initiation of the safety. The safety is initiated upon car overspeed, movement with open car doors, or excess velocity in the leveling zone.
    Type: Grant
    Filed: August 3, 1990
    Date of Patent: March 26, 1991
    Assignee: Otis Elevator Company
    Inventors: Richard Ericson, William Sheridan
  • Fuel cell current collector
    Patent number: 4983472
    Abstract: A fuel cell has a current collector plate (22) located between an electrode (20) and a separate plate (25). The collector plate has a plurality of arches (26, 28) deformed from a single flat plate in a checkerboard pattern. The arches are of sufficient height (30) to provide sufficient reactant flow area. Each arch is formed with sufficient stiffness to accept compressive load and sufficient resiliently to distribute the load and maintain electrical contact.
    Type: Grant
    Filed: November 24, 1989
    Date of Patent: January 8, 1991
    Assignee: International Fuel Cells Corporation
    Inventors: Murray Katz, Stanley P. Bonk, Donald L. Maricle, Martin Abrams
  • Elevator sheave brake safety
    Patent number: 4977982
    Abstract: The cable drive sheave (14) carries a wedge-shaped brake ring (44) engageable with V-shaped brake shoes (52, 58). Each shoe is spring biased (68, 76) tangentially toward the ring and resiliently supported and biased radially (50) toward the ring. The shoes are restrained (84) during normal elevator operation and released on either cab upward overspeed (22) or on cab movement from a landing with the doors open (32).
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: December 18, 1990
    Assignee: Otis Elevator Company
    Inventors: Louis Bialy, Anthony Cooney, William Sheridan, Edward Reiskin
  • Fuel treatment apparatus for fuel cells
    Patent number: 4976747
    Abstract: An oxidizer (12) receives cool fresh fuel (10) and hot recycle fuel (14). The recycle fuel is mixed with only a portion of the fresh fuel in the catalytic bed (16). The remaining fresh fuel is progressively added within the bed. High temperature is achieved for local ignition. The exothermic reaction heats the later mixed fuel to the ignition temperature.
    Type: Grant
    Filed: October 10, 1989
    Date of Patent: December 11, 1990
    Assignee: International Fuel Cells Corporation
    Inventors: Donald F. Szydlowski, Roger R. Lesieur
  • Fuel cell generating plant
    Patent number: 4973528
    Abstract: A fuel cell power plant has an auxiliary burner (40) to supplement input to the turbo compressor (22). Gas line 44 to the burner contains a check valve (62) and an accumulator (64) downstream of the check valve. On a temporary power loss the continued gas supply to at least the pilot (52) of the auxiliary burner avoids flameout and a consequent longer term plant outage.
    Type: Grant
    Filed: May 10, 1990
    Date of Patent: November 27, 1990
    Assignee: International Fuel Cells Corporation
    Inventor: Robert A. Sanderson
  • Leading edge heat pipe arrangement
    Patent number: 4966229
    Abstract: Heat pipe (10) includes an acute angle leading wedge shape form (38) with a radiused leading edge (26). Engine fuel supply (65) cools the trailing wedge shape form (40). The intense heat flux at the leading edge is cleanly dissipated and spread over substantial heat pipe cooling surface (64, 66). A coating (36) on the external surface of the leading edge wedge shape form is formed of a layer of iridium and a layer of oxide.
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: October 30, 1990
    Assignee: United Technologies Corporation
    Inventors: Donald R. Senterfitt, James R. Mullaly, Larry D. Hamner, Abdus S. Khan, John G. Smeggil
  • Method of operating gas turbine engine with fan damage
    Patent number: 4959955
    Abstract: Normal high load operation automatically varies nozzle area to maintain an optimum engine pressure ratio (EPR). An error signal representing fan damage is established by comparing the actual EPR to the predicted EPR. Compressor stalls are also monitored. In response to these signals a minimum nozzle area is set and modified. Automatic operation to hold EPR and afterburning is inhibited. Further signals representing satisfactory operation may reset the inhibiting action.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: October 2, 1990
    Assignee: United Technologies Corporation
    Inventors: Gregory S. Patterson, James B. Kelly
  • Oil supply reservoir
    Patent number: 4947963
    Abstract: Swirl vessel (14) located within oil tank (28) receives return oil (12) and delivers supply oil (10). The vessel is vented (50) to outside the oil tank. Surplus oil continuously drains (36) to the tank (10) interior. Make up oil from the tank is continuously ejected back into the swirl vessel (14) by various make up lines (46, 56, 68, 60) connected to the low pressure zone (49) of swirl inducing nozzles or injectors (18). The apparatus will operate at any attitude.
    Type: Grant
    Filed: May 11, 1989
    Date of Patent: August 14, 1990
    Assignee: United Technologies Corporation
    Inventor: Wilho V. Aho, Jr.
  • Fuel nozzle for gas turbine engine
    Patent number: 4946105
    Abstract: Fuel nozzle 10 has fuel delivery through circumferentially spaced orifices 34 impinging on baffle 40. Fuel flows through a restricted annulus 42 to an expansion volume 50 and thence through a restricted frusto conical annulus 52 to discharge 16. The baffle, restriction and expansion spreads the discrete flows through each orifice to obtain uniform circumferential expansion.
    Type: Grant
    Filed: April 12, 1988
    Date of Patent: August 7, 1990
    Assignee: United Technologies Corporation
    Inventors: Francis C. Pane, Jr., James A. Dierberger
  • Mirror mount with annular flat diaphragm encircling circular mirror and including a plurality of actuators
    Patent number: 4941740
    Abstract: A positionally adjustable mirror is supported by an annular flat diaphragm completely encircling the mirror. High stiffness is achieved in the torsional and transverse modes. Low stiffness is achieved in the axial direction without local high stress levels being imposed on the mirror.
    Type: Grant
    Filed: June 22, 1989
    Date of Patent: July 17, 1990
    Assignee: United Technologies Corporation
    Inventor: Warren R. Sigman
  • Fuel transfer system for aircraft
    Patent number: 4932609
    Abstract: Parallel transfer pumps (92, 94) operate to transfer fuel from auxiliary tanks (52, 60, 66) to the main tank (10). A pressure sensor (106) in the pump discharge line in combination with tank level rate mechanisms (86, 88, 90) sequences pumps (92, 92) and transfer valves (100, 102) if required, and confirms successful transfer or alarms when unsuccessful.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: June 12, 1990
    Assignee: United Technologies Corporation
    Inventors: Lawrence N. Secchiaroli, Raymond C. Cresiski, Jr., Thomas P. Wilson
  • Rotating shaft seal
    Patent number: 4928978
    Abstract: Seal 20 and seal ring 26 form annulus 36 which collects weepage oil which is removed through holes 54. Air flow pumped by face 58 of seal ring 26 is minimized by locating flange 64 close to the outer radius of the seal ring, thereby facilitating collection of all weepage oil.
    Type: Grant
    Filed: April 7, 1988
    Date of Patent: May 29, 1990
    Assignee: United Technologies Corporation
    Inventors: Harold K. Shaffer, Roger M. Barnsby
  • Grinding wheel guard apparatus
    Patent number: 4929130
    Abstract: A tool holder (32) includes a rotary portion (36) securable in a spindle (20) of a machining center (10). A pumped flow of primary coolant (16) is delivered through spindle (20) and rotary portion (36). A pumped flow of secondary coolant (22) is delivered to a static connection (26) and through the static portion (34) of the tool holder. A tool guard assembly (42) secured to static portion (34) surrounds an installed superabrasive grinding wheel (66). It also includes flow paths (50, 52, 98; 62, 68, 82 84) and nozzles (70, 80, 86, 94) to direct coolant to pre-established directions. The tool may be installed automatically in a multipurpose machining center with no additional set up time required.
    Type: Grant
    Filed: June 28, 1989
    Date of Patent: May 29, 1990
    Assignee: United Technologies Corporation
    Inventors: Richard A. Diebolt, Stephen Kidd, Donald E. Rivers, Jr.
  • Method of balancing bladed gas turbine engine rotor
    Patent number: 4926710
    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 (42) retains the weights within the openings.
    Type: Grant
    Filed: February 13, 1989
    Date of Patent: May 22, 1990
    Assignee: United Technologies Corporation
    Inventor: Rudolph J. Novotny
  • Combustion control
    Patent number: 4927350
    Abstract: At various loads a fuel/air peak relationship is determined for the peak infrared radiation. A desired operating fuel/air ratio is determined as is the offset between the relationship and the ratio. Later recalibration of the control system is established by determining a new fuel/air peak relationship and applying the offset.
    Type: Grant
    Filed: April 27, 1987
    Date of Patent: May 22, 1990
    Assignee: United Technologies Corporation
    Inventor: Martin E. Zabielski
  • Seam tracking between mating parts
    Patent number: 4922174
    Abstract: A rough taught tentative seam track is refined using the electronic image of a matrix camera. The sensed image is rotated perpendicular to the tentative track. A horizontal row of pixels is processed with a filter to enhance the seam and reject other signals. Weighted voting of various features aids in selection of the proper seam image and its location. Offset is applied to the tentative track to provide a true track.
    Type: Grant
    Filed: March 20, 1989
    Date of Patent: May 1, 1990
    Assignee: United Technologies Corporation
    Inventors: Kenneth A. Pietrzak, Scott M. Packer, Kenneth C. Dunne