United Technologies Corporation

Harold K Shaffer

Louis J Dobek

Mark Story

William G Sheridan

Masayoshi Sonokawa

Roger M Barnsby

Harrison R Picard

Claude P Rotondo

Bertrand Hirsch Brown

A face seal for a gas turbine engine comprises a seal body that has a contact face to engage a rotating surface. The contact face is defined as an area extending radially between an inner diameter of the seal body and an outer diameter of the seal body at one seal end providing a radial width. The radial width is between greater than 0.15 inch (3.81 mm).

Face seal for gas turbine engine

A face seal for a gas turbine engine comprises a seal body that has a contact face to engage a rotating surface. The contact face is defined as an area extending radially between an inner diameter of the seal body and an outer diameter of the seal body at one seal end. A ratio of the outer diameter to the inner diameter is at least 1.054.

A seal assembly for use in an intershaft seal includes a first seal that seals to a seal plate on an inner rotor shaft, a second seal that seals to a seal plate on an outer rotor shaft, and an intermediate seal that is supported by a stator assembly and seals to the first seal and the second seal. The intermediate seal may include a seal segment affixed to the stator assembly, a ring seal between the seal segment and the first seal, and a ring seal between the seal segment and the second seal. An intershaft seal with this seal assembly has less flex than a prior art intershaft seal and thereby results in greater durability and less seal wear.

Seal assembly for an intershaft seal in a gas turbine engine

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.

Rotating shaft seal

A ring fabricated from metal whose modulus of elasticity is higher than and its coefficient of expansion is lower than the outer race of a roller bearing that supports concentrically mounted shafts of a turbine power plant serves to restrain growth owing to the different thermal and centrifugal forces imposed by each of said shafts otherwise causing the roller of the bearing to loosen.

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Tolland, CT, United States of America

Harold K Shaffer