Bearing protector with air purge
US7857321B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 19, 2007 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | Jun 27, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/4478
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A bearing seal device has an air purge mechanism that includes a rotor connected to the shaft of a piece of rotating equipment and a stator connected to the housing for the rotating equipment. An air passage extends between an inlet and an outlet and is at least partially defined by circumferentially extending stator and/or rotor surfaces. Preferably, the stator incorporates an orifice, which permits the attachment of an air supply line. The air purge mechanism may include a self-compensating air supply regulator device, located adjacent a circumferential air distribution cavity and substantially adjacent to one or more atmospheric communication orifices. The bearing seal device provides sealing integrity when the shaft is both idle and operational.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.