Seal assembly
US5217235A · kind A · utility
2Cited by
9References
21Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 22, 1992 |
| Grant date | Jun 8, 1993 |
| Priority date | — |
| Expiry date | Apr 22, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3404
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A sealing assembly between first and second relatively rotatable parts, such as the parts of a tunnel boring machine, in which a flange on a first part has a radial sealing face engaged by the axial faces of inner and outer sealing rings mounted on the body portion of the second part at radially spaced locations, a bleed passage in the second body portion opening between the sealing rings and indicating any failure in the outer sealing ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.