Sand and stone screw heater
US6638062B1 · kind B1 · utility
11Cited by
14References
14Claims
0Family size
Inventor
Key dates
| Filing date | Sep 13, 2002 |
| Grant date | Oct 28, 2003 |
| Priority date | — |
| Expiry date | Sep 13, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03B5/52
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An axially rotatable materials handling apparatus for handling a mixture of solid particulate and water, includes a heater mounted on the housing that can transfer heat to the mixture to prevent or thaw frozen water inside the apparatus. The heater can be a combustible fuel heater or an electric heater. The apparatus is particularly useful in winter weather to prevent water from freezing inside the apparatus or to thaw any frozen water already present.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.