Method of toughening glass sheets
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United States of America Patent
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-
Jan 8, 1980
Grant Date -
N/A
app pub date -
Jun 19, 1978
filing date -
Jun 23, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of thermally toughening a glass sheet in which the glass sheet is advanced through a quenching station and subjected to a localized gas flow. The localized gas flow is pulsed at a repetition frequency related to the speed of advance of the glass through the quenching station. The toughened glass sheet so produced has a distribution of regions of more highly toughened glass interspersed with regions of lesser toughened glass.
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