Non-contacting mechanical face seal
US5441283A · kind A · utility
46Cited by
19References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1993 |
| Grant date | Aug 15, 1995 |
| Priority date | — |
| Expiry date | Aug 3, 2013 |
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.