Patent · US Expired

Self-positioning welding or cutting torch

US4389561A · kind A · utility

74Cited by

3References

3Claims

0Family size

Assignee

The ESAB Group, Inc. · US

Inventors

Klas B. Weman · Kalmar, SE
Hans E. A. Grohn · Kalmar, SE

Key dates

Filing date	Jun 26, 1981
Grant date	Jun 21, 1983
Priority date	—
Expiry date	Jun 26, 2001

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23Q15/22
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A sensor for detecting the relative position of a workpiece with respect to the tip of a welding or cutting torch, which is movable in optional directions by positioning devices, is provided with a sensing body in annular form which surrounds the tip and is adapted to make contact with the workpiece on any side of the central opening of the sensing body. An arm is attached to the sensing body and is displaced in a direction and to a degree corresponding to the displacement of the sensing body. The displacement of the arm is detected and a signal corresponding to that displacement is generated to reposition the welding head in response to the signal.

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