Method and apparatus for preheating, positioning and holding objects
US4249889A · kind A · utility
15Cited by
34References
32Claims
0Family size
Inventor
Key dates
| Filing date | Jun 5, 1979 |
| Grant date | Feb 10, 1981 |
| Priority date | — |
| Expiry date | Jun 5, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27B15/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Method and apparatus comprising a fine particle bed for encompassing an object, means for fluidizing the bed, while heat treating the bed if desired, and defluidizing of the bed so as to hold the object at a desirably aligned position with an exposed portion above the bed surface for a subsequent operation. Magnetic means may be used for manipulating the object to a desired orientation and vacuum means may be provided to draw unwanted products of the subsequent operation down into the bed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.