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US 5,401,290 AGranted
Apparatus for VAD with a vibration detector to eliminate natural vibrations
AssigneeSumitomo Electric Industries, Ltd.
InventorNobuya Akaike
Life of this patent
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Abstract
An apparatus for producing a glass preform by VAD, includes a rotational drive device for rotating soot material, a detection device for detecting vibrations of the soot material, and a control device for controlling rotational speed of the rotational drive device. The control drive device changes the rotational speed of the rotational drive device on the basis of a detection output of the detection device.
Claims3
An apparatus for producing a glass preform by VAD, comprising:
- rotational drive means for rotating soot material;
- detection means for detecting vibrations of the soot material;
- and
- control means for controlling rotational speed of said rotational drive means, which changes the rotational speed of said rotational drive means on the basis of a detection output of said detection means.
1 more element
Dependencies are inferred from the claim text.