Engine casing with slots and abradable lining

Details Engine casing with slots and abradable lining Engine casing with slots and abradable lining

2005-06-14

2005-06-14

Verdier, Christopher (Department: 3745)

Rotary kinetic fluid motors or pumps

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

Between blade edge and static part

C415S057400, C415S119000

Reexamination Certificate

active

06905305

ABSTRACT:
An engine casing (16) encloses a rotor (15) and has a wall the inner surface (17) of which has slots (20) therein. An abradable lining (19) is attached to the inner surface (17) of the wall and extends across the slots (20). The abradable lining (19) is fluid permeable so that in operation a fluid passes through the lining (19) and recirculates in the slots (20). Recirculation of the fluid within the slots (20) increases the aerodynamic efficiency of the rotor (15).

REFERENCES:
patent: 3542152 (1970-11-01), Adamson et al.
patent: 3843278 (1974-10-01), Torell
patent: 3890060 (1975-06-01), Lipstein
patent: 4460185 (1984-07-01), Grandey
patent: 4867639 (1989-09-01), Strangman
patent: 5137419 (1992-08-01), Waterman
patent: 5520508 (1996-05-01), Khalid
patent: 5607284 (1997-03-01), Byrne et al.
patent: 5628622 (1997-05-01), Thore et al.
patent: 6203021 (2001-03-01), Wolfla
patent: 6352264 (2002-03-01), Dalzell et al.
patent: WO 95/34745 (1995-12-01), None

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