Modulated pressure damper seals
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Date
1998-08-18
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Publisher
United States. Patent and Trademark Office
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.