Hydraulic seal arrangement

Details Hydraulic seal arrangement Hydraulic seal arrangement

2005-07-26

2005-07-26

Pickard, Alison K. (Department: 3676)

Seal for a joint or juncture

Seal between relatively movable parts

Close proximity seal

Reexamination Certificate

active

06921079

ABSTRACT:
A hydraulic seal arrangement5between two shafts1, 2rotating relatively to each other, particularly in the same sense of rotation, of especially a gas turbine engine, where the radially outer shaft2has an annulus5aextending radially outwards on its circumference into which the radially inner shaft1projects with a fin5bthat extends radially outwards on its circumference, said annulus5acan be filled siphon-fashion through an inlet area5dunder centrifugal effect with a hydraulic fluid in the area of the free end of the fin5bas the shaft(s)1, 2rotate(s), with an opening7branching off from an annulus area5efor the discharge of hydraulic fluid, the annulus5abeing formed by a first outer shell part8and a second outer shell part9situated on the shaft2.

REFERENCES:
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patent: 4570947 (1986-02-01), Smith
patent: 6164658 (2000-12-01), Collin
patent: 6516618 (2003-02-01), Böck
patent: 6568688 (2003-05-01), Boeck
patent: 2559667 (1977-11-01), None
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patent: 19916803 (2000-10-01), None
patent: 1103706 (2001-05-01), None
patent: 2125118 (1984-02-01), None
German Search Report Aug. 20, 2002.

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