Patent · US Expired

Process and device for manufacturing a structural part, especially of a ceramic tooth restoration, and a process of making sonotrode crowns

US5490810A · kind A · utility

17Cited by

11References

17Claims

0Family size

Assignee

Thera Patent GmbH & Co KG Gesellschaft fur Industrielle Schutzrechte · DE

Inventors

Rainer Hahn · Tübingen, DE
Bernd K. Burger · Gilching, DE

Key dates

Filing date	Sep 24, 1993
Grant date	Feb 13, 1996
Priority date	—
Expiry date	Sep 24, 2013

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB28D5/047
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

In a process and apparatus for the overall machining of a ceramic tooth restoration and producing of appropriate sonotrode crowns, these sonotrode crowns act on a workpiece one after the other, however from the same direction in space and are activated by the same ultrasonic transmitter. For the production of said sonotrode crowns, a geometrical model corresponding to the ultrasonic machining apparatus is used.

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