Self-lubricating and draining, contacting face, rotating shaft seal
US10113644B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2015 |
| Grant date | Oct 30, 2018 |
| Priority date | — |
| Expiry date | Aug 28, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/344
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A shaft seal assembly and method for pressure relief in a shaft seal assembly includes a stator having a static seal and a rotor rotatable relative to the stator that has a rotating seal. The static seal has an end face in sealing engagement with an end face of the rotating seal. At least one of the static seal and the rotating seal includes an annular passage defined in the respective end face and at least one axial passage extending through the respective seal. Lubricant drains and fills through the at least one axial passage and the annular passage at the sealing surfaces of the end faces. The end faces maintain sealing engagement during rotation of the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.