Vacuum valve
US5833212A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1996 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | Jun 12, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L19/065
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A vacuum valve is used in vacuum systems having connectors including an internally threaded system component with connector seal, a KF-thread flange with connector seal, and a nut collar with clamping rings and pipe. The valve includes one valve case with an interior and at least two spaced apart openings communicating with the interior. The case defines a valve seat and has a valve member movable in the interior and into positions against the valve seat and away from the valve seat to close and open the valve. A driver is connected to the valve case for moving the valve member. A separate externally threaded nipple is provided around each opening and special sealing surfaces are on each nipple for connection to each of the vacuum system connectors in a vacuum-tight manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.