Abradable labyrinth tooth seal

Details Abradable labyrinth tooth seal Abradable labyrinth tooth seal

2009-02-13

2010-12-28

Edgar, Richard (Department: 3745)

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

Between axial flow runner and vane or vane diaphragm structure

C415S174400

Reexamination Certificate

active

07857582

ABSTRACT:
A seal assembly (52, 54) for a gas turbine engine (10). The seal assembly (52, 54) includes a first seal member (40) including an abradable structure having at least first and second seal portions (58, 64) radially spaced from each other, and a second seal member (44) including first and second seal surfaces (56, 62) located in facing relationship to the first and second seal portions (58, 64), respectively. The first seal member (40) is formed of a honeycomb structure, and the first seal portion (58) of the first seal member (40) is a thin fin-like structure having a width in the axial direction of the turbine engine (10) that is less than the width of the second seal portion (64) in the axial direction.

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patent: 6652226 (2003-11-01), Albrecht, Jr. et al.
patent: 6962342 (2005-11-01), Wieghardt

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