Non-contacting mechanical face seal
US5605339A · kind A · utility
26Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 14, 1995 |
| Grant date | Feb 25, 1997 |
| Priority date | — |
| Expiry date | Aug 14, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3412
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Improved spiral grooves in a mechanical face seal have plural terminal corners which more evenly distribute the fluid pressure generated within the seal gap into discrete pressure zones which are radially displaced and may also be circumferentially displaced from the other pressure zones generated by the same groove. Alternative embodiments include grooves having surfaces of varying depths wherein each of the plural terminal groove corners is associated with a section of the groove having a surface at a particular depth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.