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公开(公告)号：US20190078514A1
公开(公告)日：2019-03-14
申请号：US15700328
申请日：2017-09-11
Applicant: United Technologies Corporation
Inventor： Jonathan Jeffery Eastwood , Joseph F. Englehart , Graham Ryan Philbrick , Henry K. Webster , Richard Seleski , ChaiDee Woods Brown , Michael G. McCaffrey
Abstract: A turbine section for a gas turbine engine includes blade outer air seals and stator vanes that provide a core flow path. A turbine case supports blade outer air seals and stator vanes. An annular cavity is provided between an interior surface of the turbine case and the blade outer air seals and the stator vanes. A hole extends through the turbine case from an exterior surface to the interior surface. The annular cavity extends axially to an exit. A manifold circumscribes the exterior surface of the turbine case and provides an annular space therebetween. The annular space is in fluid communication with the exit of the annular cavity via the hole.
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公开(公告)号：US20190048736A1
公开(公告)日：2019-02-14
申请号：US16164958
申请日：2018-10-19
Applicant: UNITED TECHNOLOGIES CORPORATION
Inventor： Michael G. McCaffrey , Benjamin F. Hagan , David Richard Griffin
CPC classification number: F01D11/12 , F01D5/02 , F01D9/041 , F01D11/08 , F01D25/08 , F02C7/28 , F05D2220/32 , F05D2230/60 , F05D2240/11 , F05D2260/231 , F05D2260/30 , F05D2260/38 , F05D2260/52 , Y02T50/672
Abstract: A seal assembly includes a seal arc segment defining first and second seal supports with a carriage defining first and second support members. The first support member supports the seal arc segment in a first ramped interface, and the second support member supports the seal arc segment in a second ramped interface. A spring is configured to bias the seal arc segment axially. A heat shield is radially inward of the spring.
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公开(公告)号：US10202863B2
公开(公告)日：2019-02-12
申请号：US15162069
申请日：2016-05-23
Applicant: United Technologies Corporation
Inventor： Timothy M. Davis , Mark F. Zelesky , Michael G. McCaffrey
Abstract: An annular ring for sealing a flow includes an inner ring and a tab. The tab extends radially and is configured to restrict axial movement of the seal.
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公开(公告)号：US10077670B2
公开(公告)日：2018-09-18
申请号：US14915432
申请日：2014-08-29
Applicant: UNITED TECHNOLOGIES CORPORATION
Inventor： Michael G. McCaffrey
CPC classification number: F01D11/08 , F01D25/24 , F01D25/246 , F01D25/28 , F05D2220/32 , F05D2230/30 , F05D2240/11 , F05D2260/30 , F05D2300/6033 , Y02T50/672
Abstract: One exemplary embodiment of this disclosure relates to a gas turbine engine including an engine case, a retention block attached to the engine case, and a blade outer air seal (BOAS). The BOAS includes a plurality of layers formed of a ceramic matrix composite (CMC) material. At least one of the plurality of layers provides a slot receiving a portion of the retention block.
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公开(公告)号：US09957834B2
公开(公告)日：2018-05-01
申请号：US14492737
申请日：2014-09-22
Applicant: United Technologies Corporation
Inventor： David J. Wasserman , Michael G. McCaffrey , Michael G. Abbott
CPC classification number: F01D21/003 , F01D11/12 , F05D2250/232 , F05D2260/80 , Y02T50/672
Abstract: A system includes, in one example, a shroud configured to circumscribe a plurality of rotor blades of a gas rotor engine, and at least one rub button including a head portion having a height configured to extend into a flow path region of the shroud along a central axis of the rub button that extends radially into the flow path region. The head portion includes a profile, orthogonal to the central axis, that varies according to a defined function of the height of the head portion.
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Patent Agency Ranking
公开(公告)号：US20170350268A1
公开(公告)日：2017-12-07
申请号：US15176035
申请日：2016-06-07
Applicant: United Technologies Corporation
Inventor： Michael G. McCaffrey
CPC classification number: F01D11/08 , F01D25/24 , F01D25/28 , F05D2220/32 , F05D2240/11 , F05D2260/30 , F05D2300/6033 , Y02T50/672
Abstract: A blade outer air seal (BOAS) segment has a transversely concave inner diameter (ID) surface along a main body portion and extending from a first circumferential end to a second circumferential end. A first mounting ear extends outward from the main body portion and cooperates with a first end portion of the main body portion to define a first circumferentially outwardly open mounting recess. A second mounting ear extends outward from the main body portion and cooperates with a second end portion of the main body portion to define a second circumferentially outwardly open mounting recess. An outwardly open well is between the first mounting ear and the second mounting ear; a plurality of layers are formed of a ceramic matrix composite (CMC) material and include: a first plurality extending along the first circumferentially outwardly open mounting recess; a second plurality extending along the second circumferentially outwardly open mounting recess; and a third plurality extending along from the first mounting ear to the second mounting ear. One or more first wedges are between layers along the first mounting ear to circumferentially flare the layers along the first mounting ear. One or more second wedges are between layers along the second mounting ear to circumferentially flare the layers along the second mounting ear.
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公开(公告)号：US20170335704A1
公开(公告)日：2017-11-23
申请号：US15162069
申请日：2016-05-23
Applicant: United Technologies Corporation
Inventor： Timothy M. Davis , Mark F. Zelesky , Michael G. McCaffrey
CPC classification number: F01D11/005 , F01D11/003 , F01D11/08 , F05D2220/32 , F05D2240/15 , F05D2240/55 , F05D2250/75 , F16J15/024 , F16J15/0887 , F16J15/44
Abstract: An annular ring for sealing a flow includes an inner ring and a tab. The tab extends radially and is configured to restrict axial movement of the seal.
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公开(公告)号：US20170268372A1
公开(公告)日：2017-09-21
申请号：US15071274
申请日：2016-03-16
Applicant: United Technologies Corporation
Inventor： Michael G. McCaffrey
CPC classification number: F01D11/16 , F01D9/04 , F01D11/025 , F01D11/08 , F01D11/122 , F01D25/246 , F05D2220/32 , F05D2230/64 , F05D2240/55 , F05D2300/6033 , F16J15/445 , Y02T50/672
Abstract: A seal assembly includes a seal arc segment that has first and second seal supports. A carriage has first and second support members. The first support member supports the seal arc segment in a first ramped interface and the second support member supports the seal arc segment in a second ramped interface such that the seal arc segment is circumferentially moveable with respect to the carriage. First and second opposed springs bias the seal arc segment toward a circumferential default position.
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公开(公告)号：US20170268366A1
公开(公告)日：2017-09-21
申请号：US15071320
申请日：2016-03-16
Applicant: UNITED TECHNOLOGIES CORPORATION
Inventor： Michael G. McCaffrey , Peter Balawajder , David Richard Griffin , Benjamin F. Hagan
Abstract: A blade outer air seal support includes, at least one arc body having a first portion and a second portion, a blade outer air seal mounting region defined at least partially between the first portion and the second portion, and an interface feature interfacing the first portion and the second portion. The interface feature is configured such that axially aligned forces are communicated between the first and second portions through the interface feature, bypassing the blade outer air seal mounting region.
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公开(公告)号：US20170268363A1
公开(公告)日：2017-09-21
申请号：US15071291
申请日：2016-03-16
Applicant: United Technologies Corporation
Inventor： Michael G. McCaffrey
Abstract: A gas turbine engine includes a case disposed around a central axis, a vane structure disposed radially inwards of the case, a seal carriage mounted to the case, and a seal arc segment mounted to the seal carriage. The vane structure exerts an axial load on the seal carriage. The seal carriage defines a load path that radially transmits the axial load to the case.
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