Bearing isolator with porous seal
US7461846B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 2006 |
| Grant date | Dec 9, 2008 |
| Priority date | — |
| Expiry date | Dec 21, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/4478
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A bearing isolator assembly for sealing a rotating shaft with a porous sealing element including a rotor configured to sealingly engage with a shaft, and a stator configured to sealingly engage with a housing of an assembly. The rotor and stator are configured to engage with each other to define a labyrinthine pathway and one or more cavities, in which may be disposed a unitizing element and a porous sealing element. The porous sealing element provides a barrier to particulate contaminants from entering the interior of the housing, and to prevent egress of lubricants from the interior of the housing. The unitizing element limits axial and/or radial movement of the rotor with respect to the stator, and helps prevent wear of the rotor and/or stator by helping prevent the rotor from contacting the stator during operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.