Patent · US Expired

Automatic tapping thimble

US6120726A · kind A · utility

3Cited by

5References

15Claims

0Family size

Assignee

Elektro-Thermit GmbH · US

Inventors

Horst Eggert · Berlin, DE
Michael Steinhorst · Essen, DE

Key dates

Filing date	Oct 23, 1998
Grant date	Sep 19, 2000
Priority date	—
Expiry date	Oct 23, 2018

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB22D41/44
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention relates to an automatically opening tapping thimble made from a refractory material for casting crucibles which are used in aluminothermic reactions. This thimble consists entirely or partially of air-permeable graphite or metal whose melting point lies between 2100 and 3727.degree. C.

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