Seal arrangement

Details Seal arrangement Seal arrangement

2007-01-09

2007-01-09

Patel, Vishal (Department: 3673)

Seal for a joint or juncture

Seal between relatively movable parts

Brush seal

C277S411000, C415S173300

Reexamination Certificate

active

11236528

ABSTRACT:
A seal arrangement (73) is provided in which seal elements (77) incorporate passages (90) allowing an air flow to be presented to tip edges (78) of the seal elements, in order to create air suspension and diminish excessive wear. These passages (90) are created by recesses in the respective adjacent juxtaposed seal elements (77). In a seal assembly (71) a seal arrangement (73) is secured within a float chamber (70) whereby radial movement is allowed to accommodate for movements in the shaft (72). The radial movement is resisted by a bias created by air flow (86) into the float chamber (70). The air flow (86) may also be presented through the passages (90) in order to create the desired air suspension of the seal elements (77).

REFERENCES:
patent: 5031922 (1991-07-01), Heydrich
patent: 5135237 (1992-08-01), Flower
patent: 6267381 (2001-07-01), Wright
patent: 6343792 (2002-02-01), Shinohara et al.
patent: 6860484 (2005-03-01), Urlichs

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