Mechanical seal ring assembly with hydrodynamic pumping mechanism
US7377518B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 7, 2005 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | May 6, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3408
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A seal ring configuration adapted to be disposed about a shaft to seal a fluid at a pressure differentials across the seal. The seal ring configuration comprises a mating ring and an axially movable primary ring. The primary ring includes a seal face in opposing relationship to the mating ring seal face to define a seal interface. The mating ring seal face or the primary ring seal face defines an annular axially recessed section and a dam section. The recessed section is axially disposed further from the cooperating seal face relative to the dam section. The axially recessed section further includes a face pattern axially spaced further from the dam section than the recessed portion and is capable of generating a hydrodynamic force between the mating ring seal face and the primary ring seal face.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.