Patent · US Expired

Method and device for crushing glass bodies by means of microwave heating

US6712298B2 · kind B2 · utility

21Cited by

2References

33Claims

0Family size

Assignee

Schott Glas · DE

Inventors

Uwe Kohlberg · Mainz, DE
Hildegard Römer · Karben, DE
Michael Kohl · Britzingen, DE
Thorsten Gerdes · Dortmund, DE

Key dates

Filing date	Feb 27, 2001
Grant date	Mar 30, 2004
Priority date	—
Expiry date	Jul 9, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02W30/60
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The present invention relates to a method and a device for crushing glass bodies, in which the glass body 18 is arranged in a microwave field 4, so that the said glass body 18 is crushed on account of the resulting thermal stresses. In addition, a local plasma 20, which results in further thermal stresses, is produced on the surface of the glass body 18. Since the glass body 18 to be crushed does not come into contact with crushing means, for example rollers or the like, the pieces of broken glass 22 cannot be contaminated by abrasion particles of the crushing means. The plasma 20 permits a rapid and economic crushing of the glass bodies.

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