Patent · US Expired

Plasmaburner with contact protection

US4330700A · kind A · utility

9Cited by

5References

5Claims

0Family size

Inventors

Peter Jagieniak · Finsterwalde, DE
Hans Koerdt · Flint, US
Jochen Bohme · Dresden, DE
Dieter Odrich · Dresden, DE
Rudolf Pochert · Çiğli, TR
Peter Wiese · Çiğli, TR

Key dates

Filing date	Mar 25, 1980
Grant date	May 18, 1982
Priority date	—
Expiry date	Mar 25, 2000

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K10/006
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

There is disclosed a plasma burner which has contact protection for protecting the operator against impermissibly high voltage and the burner head itself against destruction. The plasma burner comprises a burner shaft, a nozzle and a nozzle cap surrounding the nozzle, with cooling water flowing between them, a cathode disposed coaxially in the nozzle, a fault current protective circuit and a voltage indicator, disposed over the nozzle cap and insulated therefrom by an air gap is an electrically conductive protective cap.

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