公开(公告)号：US3880634A

公开(公告)日：1975-04-29

申请号：US46348974

申请日：1974-04-24

Applicant: AMERICAN OPTICAL CORP

Inventor： DEEG EMIL W ,  KROHN DAVID A ,  MARTEL LESLIE B

IPC: C03B19/02 ,  C03B15/14

CPC classification number: C03B19/02

Abstract: Tubing of short glass is provided by casting the glass in a tubular mold under a vacuum. The basic principle of operation is similar to that utilized in the Torricelli barometer. That is, pressure on the surface of the melt forces the molten glass into a tubular mold to a height determined by the difference in pressure between the ambient over the surface of the melt and that remaining in the mold.

Abstract translation: 通过在真空下在管状模具中浇铸玻璃来提供短玻璃的管道。 操作的基本原理类似于Torricelli气压计中使用的基本原理。 也就是说，熔体表面上的压力迫使熔融玻璃进入管状模具到由熔体表面和残留在模具中的环境之间的压力差确定的高度。