公开(公告)号：US20230366323A1

公开(公告)日：2023-11-16

申请号：US18224130

申请日：2023-07-20

Applicant: Raytheon Technologies Corporation

Inventor： Jonathan Logan Miller ,  Jonathan F. Zimmitti ,  Benstone Schwartz ,  Jeffrey E. Tessier

IPC: F01D11/00 ,  F01D25/16

CPC classification number: F01D11/003 ,  F01D25/16 ,  F05D2240/50 ,  F05D2240/55 ,  F05D2250/294 ,  F05D2250/38

Abstract: A bearing compartment seal for a gas turbine engine includes a seal ring that defines an axis and has a radially inward facing sealing surface. A seal runner is configured to rotate relative to the seal ring. The seal runner has a runner surface facing the radially inward facing sealing surface. A plurality of grooves are spaced circumferentially along the runner surface. The plurality of grooves have a length in an axial direction that is at least 50% of an axial length of the runner surface.

公开(公告)号：US20230323782A1

公开(公告)日：2023-10-12

申请号：US18335462

申请日：2023-06-15

Applicant: Raytheon Technologies Corporation

Inventor： Pantcho P. Stoyanov ,  Jonathan F. Zimmitti ,  Nasr A. Shuaib

IPC: F01D11/00 ,  F01D25/00 ,  F01D25/18 ,  F16J15/16 ,  F16J15/30

CPC classification number: F01D11/003 ,  F01D25/005 ,  F01D25/186 ,  F16J15/162 ,  F16J15/30 ,  F05D2240/55 ,  F05D2300/224 ,  F05D2300/611

Abstract: A seal assembly includes a carbon seal that has a sealing surface. A seal seat has a sealing surface and is positioned for rotation relative to the carbon seal. A diamond-like carbon coating at least partially forms the sealing surface on the seal seat.

公开(公告)号：US20230184122A1

公开(公告)日：2023-06-15

申请号：US17546762

申请日：2021-12-09

Applicant: Raytheon Technologies Corporation

Inventor： Jonathan Logan Miller ,  Jonathan F. Zimmitti ,  Benstone Schwartz ,  Jeffrey E. Tessier

IPC: F01D11/00 ,  F01D25/16

CPC classification number: F01D11/003 ,  F01D25/16 ,  F05D2240/55 ,  F05D2240/50 ,  F05D2250/294 ,  F05D2250/38

Abstract: A bearing compartment seal for a gas turbine engine includes a seal ring that defines an axis and has a radially inward facing sealing surface. A seal runner is configured to rotate relative to the seal ring. The seal runner has a runner surface facing the radially inward facing sealing surface. A plurality of grooves are spaced circumferentially along the runner surface. The plurality of grooves have a length in an axial direction that is at least 50% of an axial length of the runner surface.

公开(公告)号：US11773738B2

公开(公告)日：2023-10-03

申请号：US17546762

申请日：2021-12-09

Applicant: Raytheon Technologies Corporation

Inventor： Jonathan Logan Miller ,  Jonathan F. Zimmitti ,  Benstone Schwartz ,  Jeffrey E. Tessier

IPC: F01D11/00 ,  F01D25/16

CPC classification number: F01D11/003 ,  F01D25/16 ,  F05D2240/50 ,  F05D2240/55 ,  F05D2250/294 ,  F05D2250/38

Abstract: A bearing compartment seal for a gas turbine engine includes a seal ring that defines an axis and has a radially inward facing sealing surface. A seal runner is configured to rotate relative to the seal ring. The seal runner has a runner surface facing the radially inward facing sealing surface. A plurality of grooves are spaced circumferentially along the runner surface. The plurality of grooves have a length in an axial direction that is at least 50% of an axial length of the runner surface.

公开(公告)号：US20210285380A1

公开(公告)日：2021-09-16

申请号：US17195848

申请日：2021-03-09

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： Gabriel L. Suciu ,  Hung Duong ,  Jonathan F. Zimmitti ,  William G. Sheridan ,  Michael E. McCune ,  Brian Merry

IPC: F02C7/32 ,  F02C3/06 ,  F02C7/18 ,  F02C7/36 ,  F02C7/268 ,  F01D15/10 ,  F01D25/12 ,  F16H1/22 ,  H02K7/116 ,  H02K7/18 ,  F01D15/12 ,  F02C7/275

Abstract: An exemplary gas turbine engine assembly includes a fan section including a fan, a first spool having a first turbine operatively mounted to a first turbine shaft, and a second spool having a second turbine operatively mounted to a second turbine shaft. The first and second towershafts are respectively coupled to the first and second turbine shafts. An accessory drive gearbox includes a set of gears. A compressor is driven by the first towershaft. A transmission couples a starter generator assembly to the set of gears. The transmission is transitionable between a first mode where the starter generator assembly is driven at a first speed relative to the second towershaft in response to rotation of the second towershaft, and a second mode where the starter generator assembly is driven at a different, second speed relative to the second towershaft in response to rotation of the second towershaft.

公开(公告)号：US11946548B2

公开(公告)日：2024-04-02

申请号：US17746221

申请日：2022-05-17

Applicant: Raytheon Technologies Corporation

Inventor： Masayoshi Sonokawa ,  Jonathan F. Zimmitti ,  Nasr A. Shuaib ,  Sean P. McCutchan

IPC: F16J15/34

CPC classification number: F16J15/3452

Abstract: An apparatus has: a first member; a shaft rotatable relative to the first member about an axis; and a seal system. The seal system has: a seal carried by the first member and having a seal face; a seal housing; a seat carried by the shaft and having a seat face in sliding sealing engagement with the seal face; and a plurality of coil springs biasing the seal face against the seat face, each coil spring having a first end and a second end. The seal has a plurality of spring compartments. Each of the plurality of coil springs is partially within a respective associated compartment of the plurality of spring compartments.

公开(公告)号：US20230323951A1

公开(公告)日：2023-10-12

申请号：US18330027

申请日：2023-06-06

Applicant: Raytheon Technologies Corporation

Inventor： Pantcho P. Stoyanov ,  Jonathan F. Zimmitti ,  Nasr A. Shuaib

IPC: F16J15/3284 ,  F02C7/28

CPC classification number: F16J15/3284 ,  F02C7/28 ,  F05D2220/32 ,  F05D2240/55

Abstract: A seal assembly includes a housing that includes a seal flange at least partially defining a seal opening. A carbon seal is located at least partially in the seal opening and includes a first axially facing surface. The seal flange includes an axially facing surface that has a carbide based coating and a diamond-like carbon coating in engagement with the first axially facing surface on the carbon seal.

公开(公告)号：US11692449B2

公开(公告)日：2023-07-04

申请号：US16791324

申请日：2020-02-14

Applicant: Raytheon Technologies Corporation

Inventor： Pantcho P. Stoyanov ,  Jonathan F. Zimmitti ,  Nasr A. Shuaib

IPC: F01D11/00 ,  F16J15/16 ,  F01D25/00 ,  F01D25/18 ,  F16J15/30

CPC classification number: F01D11/003 ,  F01D25/005 ,  F01D25/186 ,  F16J15/162 ,  F16J15/30 ,  F05D2240/55 ,  F05D2300/224 ,  F05D2300/611

Abstract: A seal assembly includes a carbon seal that has a sealing surface. A seal seat has a sealing surface and is positioned for rotation relative to the carbon seal. A diamond-like carbon coating at least partially forms the sealing surface on the seal seat.

公开(公告)号：US20220403937A1

公开(公告)日：2022-12-22

申请号：US17746221

申请日：2022-05-17

Applicant: Raytheon Technologies Corporation

Inventor： Masayoshi Sonokawa ,  Jonathan F. Zimmitti ,  Nasr A. Shuaib ,  Sean P. McCutchan

IPC: F16J15/34

Abstract: An apparatus has: a first member; a shaft rotatable relative to the first member about an axis; and a seal system. The seal system has: a seal carried by the first member and having a seal face; a seal housing; a seat carried by the shaft and having a seat face in sliding sealing engagement with the seal face; and a plurality of coil springs biasing the seal face against the seat face, each coil spring having a first end and a second end. The seal has a plurality of spring compartments. Each of the plurality of coil springs is partially within a respective associated compartment of the plurality of spring compartments.