Search Patents
  • Gas turbine floating collar
    Patent number: 7140189
    Abstract: A simplified floating collar is provided comprising an collar with opposed flanges. The arrangement offers reduced cost, and simplicity, and therefore facilitates manufacturing.
    Type: Grant
    Filed: August 24, 2004
    Date of Patent: November 28, 2006
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Lorin Markarian, Bhawan Bhal Patel
  • Turbofan case and method of making
    Patent number: 7266941
    Abstract: A casing for a gas turbine includes a construction providing improved structural efficiency. Improved load paths and means for transmitting loads in the engine case are disclosed.
    Type: Grant
    Filed: July 6, 2004
    Date of Patent: September 11, 2007
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Andreas Eleftheriou, Kevin Walter Lobo, Maurice Weinberg, Quantai Liu
  • Internally mounted device for a pressure vessel
    Patent number: 7805948
    Abstract: An assembly for sealingly mounting a device in a hole in a pressure vessel casing, the assembly transferring a load produced by pressurized fluid to the casing and retaining the stem to the casing.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: October 5, 2010
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Lev Alexander Prociw, Aleksandar Kojovic, Honza Stastny
  • Positioning arrangement for components of a pressure vessel and method
    Patent number: 8959928
    Abstract: The positioning arrangement comprises at least one pair of complimentary rounded recesses, each recess being provided on the mating face of the corresponding component. One ball is positioned between each pair of complementary recesses.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: February 24, 2015
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Lev Alexander Prociw, Aleksandar Kojovic
  • Gas turbine floating collar arrangement
    Patent number: 7690207
    Abstract: A crack-resistant floating collar mounting arrangement is provided comprising a collar mounted between spaced-apart mounting flanges, the flange being fixed to a dome from an outer surface unexposed to the hot combustor temperatures.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: April 6, 2010
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Lorin Markarian, Bhawan B. Patel
  • Annular gas turbine engine case and method of manufacturing
    Patent number: 8397383
    Abstract: The method is used for making an annular gas turbine engine case from a preform. The method comprises comprising flowforming at least one section of the preform, and then outwardly bending at least one portion of the perform.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: March 19, 2013
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Barry Barnett, Steven Hunt, Czeslaw Wojtyczka
  • Positioning arrangement for components of a pressure vessel and method
    Patent number: 8181465
    Abstract: The positioning arrangement comprises at least one pair of complimentary rounded recesses, each recess being provided on the mating face of the corresponding component. One ball is positioned between each pair of complementary recesses.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: May 22, 2012
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Lev Alexander Prociw, Alexsandar Kojovic
  • Gas turbine internal manifold mounting arrangement
    Patent number: 8171738
    Abstract: A mounting system supporting and positioning an internal fuel manifold of a gas turbine engine includes at least a heat shield surrounding a fuel inlet of the fuel manifold, the heat shield bearing at least a portion of a load to support the fuel manifold.
    Type: Grant
    Filed: October 24, 2006
    Date of Patent: May 8, 2012
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Jason Fish, Bryan Olver
  • AXIAL BOLTING ARRANGEMENT FOR MID TURBINE FRAME
    Publication number: 20130067930
    Abstract: A mid turbine frame of a gas turbine engine has a plurality of circumferentially spaced load transfer spokes extending radially between outer and inner cases. The load transfer spokes have a circumferentially enlarged inner end which is mounted to the inner case by a plurality of axially disposed fasteners extending through the inner case and spokes.
    Type: Application
    Filed: September 15, 2011
    Publication date: March 21, 2013
    Applicant: PRATT & WHITNEY CANADA CORP.
    Inventor: Vincent PARADIS
  • Reduced thermal stress fuel nozzle assembly
    Patent number: 7559202
    Abstract: An assembly that includes two components joined by a pre-compressed braze where the compression in the braze is progressively relieved upon relative thermal expansion of the two components. Also disclosed is a process for producing a pre-compressed braze.
    Type: Grant
    Filed: November 15, 2005
    Date of Patent: July 14, 2009
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Lev Alexander Prociw, Harris Shafique, Dany Clarence Gaudet
  • Interface between a combustor and fuel nozzle
    Patent number: 7926280
    Abstract: A floating collar assembly is provided comprising a substantially flat floating collar trapped between a heat shield and a dome panel of the combustor. Axial engagement between the floating collar and the fuel nozzle is maintained via a nozzle cap mounted over the fuel nozzle tip.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: April 19, 2011
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Oleg Morenko, Kenneth Parkman, Stephen Phillips
  • COOLING AIR SYSTEM FOR MID TURBINE FRAME
    Publication number: 20110079019
    Abstract: A mid turbine frame is disposed between high and low pressure turbine assemblies. A cooling air system defined in the mid turbine frame of a gas turbine engine includes internal cavities for containing pressurized cooling air to cool the inter-turbine duct and the hollow struts, and discharges the used cooling air to further cool respective high and low pressure turbine assemblies.
    Type: Application
    Filed: October 1, 2009
    Publication date: April 7, 2011
    Applicant: PRATT & WHITNEY CANADA CORP.
    Inventors: Eric DUROCHER, Pierre-Yves LEGARE
  • Cooled support boss for a combustor in a gas turbine engine
    Patent number: 7559203
    Abstract: The support boss is used in a combustor of a gas turbine engine. It comprises a side wall defining an internal space. The side wall has at least one air inlet orifice. It also comprises a bottom wall closing one end of the internal space. The bottom wall has at least one air outlet orifice.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: July 14, 2009
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Honza Stastny, Jeffrey Richard Verhiel
  • MID TURBINE FRAME SYSTEM FOR GAS TURBINE ENGINE
    Publication number: 20100132370
    Abstract: A gas turbine engine mid turbine frame apparatus includes a an inner case supporting a bearing, an outer case to which the inner case is mounted, and an apparatus for radially positioning one relative to the other, the apparatus including a plurality of radial locators extending outwardly of the outer case and an associated locking apparatus. The locking apparatus is mounted adjacent to but independent of the locators and provides for anti-rotation of the radial locators once installed.
    Type: Application
    Filed: November 28, 2008
    Publication date: June 3, 2010
    Applicant: PRATT & WHITNEY CANADA CORP.
    Inventors: Eric DUROCHER, John PIETROBON
  • Cooling air system for mid turbine frame
    Patent number: 8371127
    Abstract: A mid turbine frame is disposed between high and low pressure turbine assemblies. A cooling air system defined in the mid turbine frame of a gas turbine engine includes internal cavities for containing pressurized cooling air to cool the inter-turbine duct and the hollow struts, and discharges the used cooling air to further cool respective high and low pressure turbine assemblies.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: February 12, 2013
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Eric Durocher, Pierre-Yves Legare
  • Gas turbine internal manifold mounting arrangement
    Patent number: 9068508
    Abstract: A mounting method and system for supporting and positioning an internal fuel manifold relative to a combustor in a fuel injection system for a gas turbine engine. The method includes positioning the fuel manifold within a gas generator casing, applying a heat shield around a radially extending fuel inlet connected to the fuel manifold, and using the heat shield to at least partially support the fuel manifold within the gas generator casing.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: June 30, 2015
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Jason Fish, Bryan Olver
  • Gas turbine floating collar arrangement
    Patent number: 7134286
    Abstract: A simplified floating collar mounting arrangement for receiving a fuel nozzle swirler body of a gas turbine engine combustor is provided. The assembly comprises a floating collar mounted between a spaced-apart mounting flange and cap, and slidably trapped therebetween such that relative radial movement is permitted. The arrangement offers reduced part count and simplicity, and therefore improves reliability.
    Type: Grant
    Filed: August 24, 2004
    Date of Patent: November 14, 2006
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Lorin Markarian, Bhawan Bhai Patel
  • Turbofan mounting system
    Patent number: 8313293
    Abstract: A gas turbine engine has a rear mounting assembly incorporating a mounting apparatus attached to a bypass duct wall with a link device for transferring core portion related inertia-induced loads, from an MTF of the core portion in a short circuit across an annular bypass air passage to the bypass duct wall.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: November 20, 2012
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Jeffrey Bernard Heyerman, Bryan W. Olver, Bruce Fielding, Carl Smythe
  • Turbofan mounting arrangement
    Patent number: 8979491
    Abstract: A gas turbine engine has a rear mounting structure incorporating a mounting apparatus attached to a bypass duct wall with a link device of six rods for transferring core portion related inertia-induced loads, from an inner case of the core portion in a short circuit across an annular bypass air passage to the bypass duct wall.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: March 17, 2015
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Jeffrey Bernard Heyerman, Bryan Olver, Stephen Caulfeild
  • Assembly procedure for the adjustable pin-valve, fuel shut-off
    Patent number: 8813504
    Abstract: A protocol for assembling a fuel shut off pin valve assembly for a gas turbine engine. The protocol outlines a specific sequence of events in order to ensure failsafe incorporation of a fuel shut off valve assembly within the low pressure turbine area and specifically within the engine casing of the gas turbine.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: August 26, 2014
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Guy Lefebvre, Claude Giardetti