Rotary shaft bearing isolator seal
US6390477B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1999 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Oct 14, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C33/80
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A bearing isolator seal having a shaft seal assembly that includes a stator housing comprising two components, an interior and an exterior component, the two stator housing components being selectively connectable, and axially positionable (relative to the radial faces of the rotor), disconnectable via screw threads on similar structures formed thereon to enable a perishable rotor component to be readily replaced with the stator components being reusable with a new rotor, the assembled stator housing, having an inner radially extending face with a pair of spaced concentric annular flanges of substantially frusto-conical shape extending from a larger diameter end that is fixed to the inner radially extending face to a smaller diameter free end, and a rotor having a peripherally extending radial flange that is fixed to a hub of the rotor and has a contact sealing surface that contacts the free end of the annular flanges of the stator housing. In accordance with a preferred embodiment, drain ports are provided at a radially inner side of the fixed end of a radially outermost one of the annular flanges of the stator housing, and radially extending grooves are provided in an end surface…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.