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:
Nov. 29, 2011
Filed:
Nov. 07, 2005
Tomonori Kano, Shigaken, JP;
Tomonori Kano, Shigaken, JP;
Nippon Electric Glass Co., Ltd., Shigaken, JP;
Abstract
A supplying tube for a molten glass, which is placed in a downstream end portion of a supplying passage directing the molten glass flowing out of a melting furnace to a forming vessel in a forming furnace, has a small diameter tube portion which has a small flow passage area and is provided at an upstream side, and a large diameter tube portion which is provided at a downstream side of the small diameter tube portion and has a large flow passage area. An expanded diameter tube portion of which flow passage area gradually expands toward the downstream side is interposed between the small diameter tube portion and the large diameter tube portion. The small diameter tube portion, the expanded diameter tube portion, and the large diameter tube portion may be integrally and continuously connected to one another.