Closure device for the vacuum-tight closing of an opening in a wall
US7611122B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 22, 2007 |
| Grant date | Nov 3, 2009 |
| Priority date | — |
| Expiry date | Apr 23, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/122
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A closure device for closing an opening in a wall in a vacuum-tight manner comprises a closure plate, a carrying unit which carries the closure plate and which has at least one longitudinal piston-cylinder unit, and a base unit which carries the carrying unit and has at least one transverse piston-cylinder unit. A closing cylinder space of the at least one longitudinal piston-cylinder unit is connected to a closing cylinder space of the transverse piston-cylinder unit, or of at least one of the transverse piston-cylinder units, by means of a closing pressure gas channel, and an opening cylinder space of the at least one longitudinal piston-cylinder unit is connected to an opening cylinder space of the transverse piston-cylinder unit, or of at least one of the transverse piston-cylinder units, by means of an opening pressure gas channel. The closing cylinder spaces and the opening cylinder spaces of the transverse piston-cylinder unit and longitudinal piston-cylinder unit are acted upon by pressure for closing the closure device, and only the opening cylinder spaces of the transverse piston-cylinder unit and longitudinal piston-cylinder unit are acted upon by pressure for opening th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.