Switch, especially for branching off bulk material flows
US7278449B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2003 |
| Grant date | Oct 9, 2007 |
| Priority date | — |
| Expiry date | Sep 20, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86871
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The invention relates to a switch for branching off bulk material flows, the switch includes a rotary plug (1) which is arranged in a fixed housing having preferably three connection openings. In a first position the plug establishes a connection between a first pair of connection openings and, by rotation into a second position, establishes a connection between a second pair of connection openings, a gap being provided between the rotary plug (1) and the housing in such a way as to arrange the rotary plug (1) in the housing in a non-contact manner without any additional contact sealing elements. The plug (1) and/or said housing includes at least one labyrinth sealing arrangement (7).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.