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公开(公告)号：US12152502B2
公开(公告)日：2024-11-26
申请号：US17514602
申请日：2021-10-29
Applicant: Pratt & Whitney Canada Corp.
Inventor： Eric Durocher , Ian MacFarlane , Guy Lefebvre
Abstract: An apparatus is provided for a gas turbine engine. This gas turbine engine apparatus includes a hot section structure of the gas turbine engine. The hot section structure is configured with a plurality of surfaces respectively forming boundaries of a gas path through the hot section structure. The surfaces include a first surface and a second surface. The hot section structure includes metal and thermal barrier material. The first surface is formed by the metal. The second surface is formed by the thermal barrier material.
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公开(公告)号：US12123314B2
公开(公告)日：2024-10-22
申请号：US17081055
申请日：2020-10-27
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Guy Lefebvre , Remy Synnott
CPC classification number: F01D25/18 , F02C7/20 , F16L15/02 , F16L27/1274 , F05D2260/60 , F05D2260/98 , F16L27/12751
Abstract: A gas turbine engine has a service tube assembly including an adjustable joint having a flange axially movable along an end fitting having a male/female connection with a mating part. The flange is threadably engaged with the end fitting to provide for the adjustment of the position of the flange along the end fitting.
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公开(公告)号：US12012972B2
公开(公告)日：2024-06-18
申请号：US17872242
申请日：2022-07-25
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Guy Lefebvre , Christopher Gover
CPC classification number: F04D29/444 , F02C6/08 , F04D17/10 , F04D29/284 , F04D29/682
Abstract: The compressor section can have a centrifugal impeller operable to rotate around an axis, the centrifugal impeller having blades, a compressor inlet oriented towards the front and axially relative the axis, a compressor outlet oriented radially outwardly relative the axis, a diffuser having a diffusion flow path, a diffuser inlet in fluid flow communication with the compressor outlet, a diffusion flow path between a rear wall and a front wall; a collector extending circumferentially around the axis, having a collector inlet in fluid communication with the diffuser outlet, and a collector outlet; and hollow structural members protruding rearwardly from the rear wall, the hollow structural members being circumferentially interspaced from one another, each hollow structural member having a length extending radially along the rear wall and having an internal conduit extending radially inwardly along the length.
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公开(公告)号：US11959389B2
公开(公告)日：2024-04-16
申请号：US17345017
申请日：2021-06-11
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Jocelyn Bisson , Guy Lefebvre
IPC: F01D25/24
CPC classification number: F01D25/24 , F05D2220/32
Abstract: A turbine shroud segment has a shroud body including a platform having forward and aft hooks extending from a radially outer surface of the platform for engagement with a shroud support structure of a turbine support case. A pin receiving hole is defined in the shroud body. An anti-rotation pin is engaged in the pin receiving hole. The anti-rotation pin projects outwardly from the pin receiving hole for engagement with a corresponding anti-rotation abutment on the shroud support structure.
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公开(公告)号：US11739664B1
公开(公告)日：2023-08-29
申请号：US17655205
申请日：2022-03-17
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Guy Lefebvre , Remy Synnott , Philippe Savard
CPC classification number: F01D25/28 , F01D9/065 , F01D25/16 , F01D25/18 , F05D2230/72 , F05D2250/232 , F05D2250/63 , F05D2260/31 , F05D2260/98
Abstract: A service tube assembly comprises a service tube having a threaded end portion and a shoulder. The outer shoulder has a conical surface converging in a direction away from the threaded end portion. The threaded end portion is threadably engaged with a mating part. The mating part has a seat surface which cooperates with the shoulder of the service tube to form a conical seat. The assembly further includes a locking member having an outer conical surface complementary to the conical seat. A mechanical fastener is provided for releasably holding the locking member against the conical seat.
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Patent Agency Ranking
公开(公告)号：US11629615B2
公开(公告)日：2023-04-18
申请号：US17331743
申请日：2021-05-27
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Guy Lefebvre
IPC: F01D25/26
Abstract: A turbine exhaust case (TEC) has an outer case and an inner case structurally interconnected by a plurality of circumferentially spaced-apart struts. At least one of the struts has an airfoil body with a hollow core. The airfoil body has opposed pressure and suction sides extending chordwise from a leading edge to a trailing edge and spanwise from a radially inner end to a radially outer end. The radially inner end of the strut has a strut wall extension that extends through the inner case to a location radially inward of the inner case relative to the central axis.
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公开(公告)号：US11473480B2
公开(公告)日：2022-10-18
申请号：US17178708
申请日：2021-02-18
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Guy Lefebvre , Remy Synnott , Michael Paolucci
Abstract: A gas turbine engine exhaust system comprises an instrumented exhaust duct including a set of exhaust temperature probes installed at the exhaust end of the duct in an air space between the engine outer case and a surrounding engine nacelle. A shield is removably installed at the end of the exhaust duct to protect the probes and associated wiring in the air space.
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公开(公告)号：US10767567B2
公开(公告)日：2020-09-08
申请号：US15407445
申请日：2017-01-17
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Guy Lefebvre
IPC: F02C7/36 , B64D35/04 , F02C3/08 , F01D5/02 , F02C3/14 , F02C6/20 , F02C3/113 , B64D27/10 , F01D15/12 , F02C3/10 , F02K3/06 , F01D25/18 , F02C7/32 , F16H57/04 , F02C3/107
Abstract: A multi-spool gas turbine engine comprises a low pressure (LP) spool and a high pressure (HP) spool. The LP spool and the HP spool are independently rotatable about an axis. The LP pressure spool has an LP compressor and an LP turbine. The HP spool has an HP turbine and an HP compressor. An accessory gear box (AGB) is axially mounted at one end of the engine. The LP compressor is axially positioned between the HP compressor and the AGB. The AGB is drivingly connected to the HP spool through the center of the LP compressor.
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公开(公告)号：US10760527B2
公开(公告)日：2020-09-01
申请号：US15019341
申请日：2016-02-09
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Guy Lefebvre , Nicolas Grivas , Richard Bouchard , Denis Leclair , Eric Durocher
Abstract: An exhaust mixer for a gas turbine engine includes an annular wall having upstream end adapted to be fastened to an engine case and a downstream end forming a plurality of inner and outer mixer lobes. A support member interconnects at least a number of the inner lobes, and includes a circumferentially extending stiffener ring located radially inwardly from the inner lobes and a series of circumferentially spaced apart mixer struts radially extending from the inner lobes to the stiffener ring. The mixer struts have a radial length at least equal to a width of a main gas path defined between the inner lobes and the exhaust cone such that the mixer struts extend entirely through the main gas path. The stiffener ring being fixed solely to the mixer struts such as to float with respect to the exhaust cone and permit relative movement therebetween.
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公开(公告)号：US10443449B2
公开(公告)日：2019-10-15
申请号：US15206579
申请日：2016-07-11
Applicant: Pratt & Whitney Canada Corp.
Inventor： Guy Lefebvre , Remy Synnott , John Pietrobon
Abstract: A mid-turbine frame of a gas turbine engine has a structural ring assembly comprising an outer ring, an inner ring having a plurality of threaded bosses extending from a radially outer surface thereof, and a corresponding number of structural spokes interconnecting the inner ring to the outer ring. Each spoke has a radially inner threaded end threadably engaged in an associated one of the threaded bosses on the inner ring.
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