Modulated pressure damper seals

Details Modulated pressure damper seals Modulated pressure damper seals

1996-08-20

1998-08-18

Reese, Randolph A.

Seal for a joint or juncture

Process of dynamic sealing

Close proximity seal

277347, 277355, 277411, 277928, F16J 15447

Patent

active

057949425

ABSTRACT:
A damper seal and method of sealing and damping a rotating shaft are disclosed. The damper seal includes a stator housing, a plurality of cavities, a first modulator for modulating the fluid flow into the cavities, and a second modulator for modulating the fluid flow exiting the cavities less than the fluid flow entering the cavities to provide improved damping and sealing.

REFERENCES:
patent: 4978278 (1990-12-01), Kun
patent: 4979755 (1990-12-01), Lebreton
patent: 5085443 (1992-02-01), Richards
patent: 5106104 (1992-04-01), Atkinson et al.
patent: 5161942 (1992-11-01), Chen et al.
patent: 5224713 (1993-07-01), Pope
patent: 5496045 (1996-03-01), Millener et al.
patent: 5540447 (1996-07-01), Schultz et al.
patent: 5586860 (1996-12-01), Betrand et al.
Murphy et al; "Labyrinth Seal Effects on Rotor Whirl Instability" (#C306/80), Sep. 1980.

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