Shaft sealing assembly and compressor incorporating the same
US6290470A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Sep 30, 1999 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Sep 30, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3244
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A shaft sealing assembly for a compressor includes first and second lip rings, each of which is disposed around a shaft of a compressor to provide sealing. A retainer ring is disposed between the two lip rings to retain the shape of the first lip ring, which serves to allow leakage of fluid when the shaft rotates and prevent the leakage when the shaft is stopped. The three rings are held together at the radial portions of the rings. Each of the radial portions of the two lip rings extends outwardly beyond the radial portion of the retainer ring, providing an annular contact area. The two lip rings resiliently contact one another in the contact area. An annular projection is provided on at least one of the lip rings in the contact area to ensure the sealing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.