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Marsh; Brian
Orrell, GB2
No. of patents:

Patent Number Title Of Patent Date Issued
4221579 Thermal treatment of glass sheets September 9, 1980
A glass sheet is thermally treated, for example thermally toughened, by heating the glass sheet, and lowering the sheet into a gas-fluidized bed of particulate material which is at a glass-treatment temperature, for example quenching temperature. Extraction of gas from a localized upper
4198226 Method and apparatus for controlling a fluidized bed April 15, 1980
A gas-fluidized bed of particulate material is operated by extracting gas from a localized region of the bed to produce an unfluidized static condition of the material in that region. The region may be in the upper part of the fluidized bed, or may be a region adjacent a side opening int
4194898 Method and apparatus for treatment of articles in a fluidized bed March 25, 1980
An article, for example a glass sheet, is treated in a gas-fluidized particulate material by advancing the article along a path leading into the gas-fluidized particulate material and extracting gas from a region of the path at a rate sufficient to pack the particulate material in that

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