Metering of particulate material and vaporization thereof
US7972443B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2008 |
| Grant date | Jul 5, 2011 |
| Priority date | — |
| Expiry date | Feb 25, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F11/24
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Apparatus for metering and vaporizing a particulate material, includes: a metering device having: a reservoir for receiving particulate material; a housing having an internal volume and having first and second openings; a rotatable shaft disposed in the internal volume, the shaft having a smooth surface and a circumferential groove; a rotating agitator with a plurality of tines disposed in the reservoir and cooperating with the rotating shaft for fluidizing particulate material and transporting it from the reservoir into the groove; cooperating such that particulate material is transported by the groove; a scraper cooperates with the groove to dislodge particulate material retained therein, and deliver metered amounts of particulate material through the second opening; the rotatable shaft and the scraper cooperates to fluidize the particulate material at the second opening; and a flash evaporator that flash vaporizes the received particulate material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.