Patent · US Expired

Method and apparatuses for applying molten hard material to teeth of cutting tools

US5101879A · kind A · utility

4Cited by

11References

1Claims

0Family size

Assignee

Vollmer Werke Maschinenfabrik GmbH · DE

Inventors

Ernst Beck · Maselheim, DE
Peter Lenard · Biberach, DE
Johann Bayer · Freising, DE

Key dates

Filing date	Dec 21, 1989
Grant date	Apr 7, 1992
Priority date	—
Expiry date	Dec 21, 2009

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB22D19/06
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Around a tooth, a molding cavity is formed which is closed at the tooth face and tooth flanks and in which the mold material forms a dome due to its surface tension. Said dome is flattened prior to the solidification of the material for approximation to the intended profile of the tooth back by exerting a pressure on the dome which pressure is moved progressively in the direction towards the tooth tip. When the hard material is melted with a gas or plasma jet the latter can be moved after the melting of the hard material in the direction towards the tooth tip over the dome. The gas jet is used to smooth the material after a first heating torch is used to melt the material.

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