Vented lift off seal assemblies
US10036474B2 · kind B2 · utility
0Cited by
13References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 23, 2015 |
| Grant date | Jul 31, 2018 |
| Priority date | — |
| Expiry date | Feb 19, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3452
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A seal assembly includes a first sealing ring defining a plurality of circumferentially spaced depressions configured to form a lift off seal with the first sealing ring rotating and to prevent leakage radially with the first sealing ring at rest. At least one ventilation channel extends from a respective edge of one of the depressions to an edge of the first sealing ring and is configured to relieve pressure with the first sealing ring at rest. The first sealing ring can have an inner diameter and an outer diameter such that the plurality of depressions are defined between the inner and outer diameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.