US PATENT SUBCLASS 65 / 119
.~.~.~.~ Annealing by direct contact with gaseous heat exchange medium

Current as of: June, 1999
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65 /   HD   GLASS MANUFACTURING

17.1  DF  PROCESSES {32}
111  DF  .~ Glass preform treating {4}
117  DF  .~.~ Annealing {1}
118  DF  .~.~.~ During conveying {1}
119.~.~.~.~ Annealing by direct contact with gaseous heat exchange medium

DEFINITION

Classification: 65/119

(under subclass 118) Processes wherein a gaseous heat exchange medium contacts the article or preform to heat or cool the same; flame contact being included.

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120, for flame treating.

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432, Heating,

11, for a residual process of treating an article by moving it through a heating zone or through heating and cooling zones.