Rotating union with carbon graphite labyrinthine seal
US4928997A · kind A · utility
27Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 13, 1989 |
| Grant date | May 29, 1990 |
| Priority date | — |
| Expiry date | Mar 13, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23B31/302
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A multiple passage rotating union includes a housing assembly having a housing with an elongated cylindrical sleeve bearing of carbon graphite located in the axial bore of the housing and heat shrunk to the inner surface of the housing bore, the sleeve bearing defining the bearing surface for the rotor assembly of the rotating union and providing sealing between the fluid passageways through the rotating union.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.