High temperature damper for a roller bearing
US7431504B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 18, 2006 |
| Grant date | Oct 7, 2008 |
| Priority date | — |
| Expiry date | May 11, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F2222/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.