Hydraulic seal

Details Hydraulic seal Hydraulic seal

1998-12-18

2000-12-26

Knight, Anthony

Seal for a joint or juncture

Seal between relatively movable parts

Close proximity seal

277428, 277917, F16J 15447

Patent

active

06164658&

ABSTRACT:
A hydraulic seal (15) for providing a seal between two concentric shafts (10,12) of a gas turbine engine comprises a radially outer element (16) that defines an annular oil reservoir (21) and a radially inner element (22) having an annular fin (24) that projects into the oil reservoir (21). The radially inner seal element (22) is attached to its associated shaft (10) by frangible shear pins (26). In the event of relative axial movement between the shafts (10,12) the shear pins (26) break, thereby ensuring that such shaft relative axial movement is not unduly inhibited.

REFERENCES:
patent: 1425548 (1922-08-01), Schmidt
patent: 1879626 (1932-09-01), Mendenhall et al.
patent: 3455561 (1969-07-01), Rinker et al.
patent: 3531131 (1970-09-01), Hummer
patent: 4288082 (1981-09-01), Setterberg, Jr.
patent: 4498291 (1985-02-01), Jeffery
patent: 4904137 (1990-02-01), Matuschek
patent: 5088742 (1992-02-01), Catlow
patent: 5239750 (1993-08-01), Wright

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