Control apparatus for controlling gas flow in a molecular region
US5873562A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 1996 |
| Grant date | Feb 23, 1999 |
| Priority date | — |
| Expiry date | Jan 29, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K3/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control apparatus for controlling gas flow in a molecular region including a housing, having a through-channel, and a control plate displaceable in its plane between an open position, in which the plate is located sidewise of the through-channel, and a closed position, in which the control plate crosses the through-channel, the control plate having a circumferential edge at least a portion of which is received in a groove circumscribing the through-channel, with the received portion having a profile which is offset backward or projects out with respect to the cross-sectional profile of the through-channel, and with the received portion having a diminished cross-sectional profile in comparison with the remaining edge portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.