Method and apparatus for extended life journal assembly
US8087172B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2008 |
| Grant date | Jan 3, 2012 |
| Priority date | — |
| Expiry date | May 21, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49696
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method of extending the life of a journal bearing assembly in a solid fuel pulverizer includes: removing a first lower journal bearing from a journal shaft and a lower bearing seat of a lower bearing housing; removing a first upper journal bearing from the shaft and an upper bearing seat of an upper bearing housing; modifying the lower and upper bearing seats; modifying lower and upper shoulders on the journal shaft; disposing the second lower and upper journal bearings on the modified lower and upper bearing seats; disposing a new journal bearing spacer between the second lower and upper journal bearings; disposing a new journal bearing collar between the upper shoulder and the second upper journal bearing; filling a cavity defined by the lower and upper journal housings with grease; and disposing a seal assembly between the shaft and one end of the upper journal housing opposite the lower journal housing to prevent the ingress of solid fuel into the cavity of the journal assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.