C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
C03B 35/26 (2006.01) C03B 37/014 (2006.01)
Patent
CA 2071238
Abstract The present invention relates to an improvement in an apparatus for suspending from a quartz rotary shaft, a glass article to be heat treated in a heating furnace so as to support the glass article. The improvement is comprised of a slot for receiving a cylindrical projection formed at an upper end of the glass article, which has an elliptical cross section and is formed at a lower end of the rotary shaft. A pin hole is provided for securing the glass article to the rotary shaft, which is formed on the rotary shaft along a minor axis of the slot. A clearance is provided between a peripheral surface of the slot and that of the cylindrical projection along the minor axis of the slot and is set to not more than 0.2 mm. A clearance is provided between the peripheral surface of the slot and that of the cylindrical projection along a major axis of the slot and is set to not less than 0.4 mm.
Kobayashi Kohei
Ohga Yuichi
Saito Tatsuo
Sato Hikaru
Takata Kouji
Kirby Eades Gale Baker
Sumitomo Electric Industries Ltd.
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