Glass manufacturing – Processes – With measuring – sensing – inspecting – indicating – or testing
Patent
1993-11-24
1994-08-23
Lindsay, Robert L.
Glass manufacturing
Processes
With measuring, sensing, inspecting, indicating, or testing
65 64, 65102, 65157, C03B 2300
Patent
active
053403746
ABSTRACT:
The apparatus for molding an optical glass element is made up of relatively movable upper and lower molds for press molding a glass blank, and a plurality of infrared ray lamps encircling the upper and lower molds, temperature measuring devices for measuring the temperatures of the upper and lower molds, and a controller responsive to the outputs of the temperature measuring devices for controlling electric inputs to the infrared ray lamps thereby maintaining the temperatures of the upper and lower molds at predetermined values.
REFERENCES:
patent: 4591373 (1986-05-01), Sato
patent: 4778505 (1988-10-01), Hirota et al.
patent: 4913781 (1990-04-01), Yoshimura et al.
patent: 5032159 (1991-07-01), Kuwabara et al.
Arai Fumio
Hasegawa Yutaka
Komiyama Yoshizo
Tanioka Tetsuya
Toyama Yoshiyasu
Lindsay Robert L.
Toshiba Kikai Kabushiki Kaisha
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