Double toric sealing ring
US4415170A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 5, 1982 |
| Grant date | Nov 15, 1983 |
| Priority date | — |
| Expiry date | Jan 5, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K1/2266
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A flexible double toric sealing ring comprising two toric sealing ring structures 2, 3 which ensure, respectively, a static seal and a dynamic seal. A counter ring is mounted radially on the second sealing ring structure and floats with it to allow self centering of the arrangement with respect to the valve seat. A sealing membrane 8 presents an elastically deformable structure 12 interconnecting the two sealing ring structures 2 and 3 while partially covering them. The two sealing ring structures 2, 3 are mounted on opposite sides of the middle section 11 of membrane 8. This double toric sealing ring can be advantageously applied to a butterfly valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.