Refractory bearing
US10145414B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2016 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | Jun 15, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2231/00
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
At least one bearing insert is secured within a metallic housing to form a wear resistant bearing. In operation, the bearing insert engages a journal and provides a wear-resistant surface. The housing defines a cavity for receiving the bearing insert. The cavity preferably expands radially so that the bearing insert remains secured in the cavity. The bearing insert can comprise a refractory ceramic. The bearing insert is secured within the cavity by any suitable means, such as thermal shrink-fit. A thin layer of sacrificial metal protects the bearing insert during initial start-up. The sacrificial metal wears to expose the bearing insert. Further wear exposes a larger area of the refractory bearing insert. A second bearing insert can be disposed opposite to the first so that rotating the housing can expose the second bearing insert to the journal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.