High temperature damper for a roller bearing

Details High temperature damper for a roller bearing High temperature damper for a roller bearing

2006-05-18

2008-10-07

Hannon, Thomas R (Department: 3682)

Bearings

Rotary bearing

Hydraulic or pneumatic bearing support

C384S535000, C384S581000

Reexamination Certificate

active

07431504

ABSTRACT:
A high temperature damper for a roller bearing having a long shelf life and capable of withstanding temperatures in a gas turbine engine shaft. The damper includes a damping chamber formed between a stator housing and the outer race of the bearing, and is filled with a liquid metal such as Gallium that has a paste-like consistency at room temperature so as not to flow and leak from the damping chamber, and a liquid-like consistency at about 1,500 degrees F. in order to withstand the extreme temperatures of a gas turbine engine. Seals having a U-shape cross section are made of a high temperature metal like Hastalloy or Hynes and enclose the liquid metal within the damping chamber.

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