Shutter and gate valve assemblies for vacuum systems
US7743790B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 20, 2008 |
| Grant date | Jun 29, 2010 |
| Priority date | — |
| Expiry date | Apr 25, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8696
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A shutter and gate valve assembly includes a valve housing that defines a passage therethrough, a valve member having a valve aperture, the valve member movable between a non-operating position that seals the passage and an operating position that aligns the valve aperture with the passage, and a shutter movable between a closed position that blocks the valve aperture and an open position that unblocks the valve aperture. The shutter member may be affixed to and movable with the valve member between the non-operating position and the operating position. The shutter may be provided with a shutter aperture that is aligned with the valve aperture in the open position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.