The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 03, 2008
Filed:
Aug. 04, 2005
Naruaki Tomita, Yokohama, JP;
Yasuharu Hirahara, Yokohama, JP;
Kazuo Hamashima, Yokohama, JP;
Koji Obayashi, Yokohama, JP;
Naruaki Tomita, Yokohama, JP;
Yasuharu Hirahara, Yokohama, JP;
Kazuo Hamashima, Yokohama, JP;
Koji Obayashi, Yokohama, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
The present invention provides a A metal conduit for molten glass and a vacuum degassing apparatus are disclosed, which are capable of coping with extension and contraction, and vibration. By disposing at least one convex portionso to have a height of 4 mm or above in a radial direction and continuously extend in a peripheral direction, it is possible to absorb thermal expansion and contraction without changing the entire length of the metal conduitand to suppress from the metal conduitfrom vibrated even when molten glassis conveyed by the metal conduit. By employing the metal conduitstated earlier in an upstream conveying pipeA, an uprising pipeU, a vacuum degassing vessel, a downfalling pipeL, a downstream conveying pipeB or the like in a vacuum degassing apparatus, it is possible to cope with thermal expansion and contraction, and vibration caused when conveying molten glass