Vacuum valve
US6629682B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 11, 2001 |
| Grant date | Oct 7, 2003 |
| Priority date | — |
| Expiry date | Jan 11, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K51/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A vacuum valve comprises a wall with a valve opening and a valve seat, a valve plate which is pressed against the valve seat in the closed state, an elastic sealing ring which is arranged at the valve plate or at the valve seat and, in the closed state of the valve, is pressed by a pressing force against a sealing surface arranged at the valve seat or at the valve plate and seals the valve opening, and a supporting ring which is made of plastic and which is arranged at the valve plate or at the valve seat and, at least in the closed state of the vacuum valve, lies closer to the valve opening than the sealing ring, viewed from the sealing ring, and limits the pressing force acting on the sealing ring in the closed state of the vacuum valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.