Patent · US Active

Refining glass with reduced pressure

US10858277B2 · kind B2 · utility

0Cited by

9References

13Claims

0Family size

Assignee

Owens-Brockway Glass Container Inc. · US

Inventors

Zhongming Wang · Ypsilanti, US
Nicholas A. Schoenrock · Toledo, US
Ya-Cheng Lin · Perrysburg, US

Key dates

Filing date	Mar 15, 2018
Grant date	Dec 8, 2020
Priority date	—
Expiry date	Nov 3, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03B2211/23
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

An apparatus and methods of refining glass, in a multi-stage, downwardly cascading manner, include a melting chamber housing molten glass and having an outlet, a first refining chamber downstream from the melting chamber and having a first outlet and a first inlet below the outlet of the melting chamber, and a second refining chamber downstream from the first refining chamber and having a second outlet and a second inlet below the first outlet of the first refining chamber. The first refining chamber has a first negative pressure and the second refining chamber has a second negative pressure.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.