Patent · US Expired

Pipe-cutting and/or welding machine with clamping motor torque limiting control

US4020405A · kind A · utility

3Cited by

3References

4Claims

0Family size

Assignee

Messer Griesheim GmbH · DE

Inventors

Gunter Schumann · Radebeul, DE
Werner Becker · Hirschhorn, DE

Key dates

Filing date	May 1, 1975
Grant date	Apr 26, 1977
Priority date	—
Expiry date	May 1, 1995

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K37/0538
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A pipe cutting and/or welding device has a chuck for rotating the pipe with the chuck jaws connected with an activating device provided with torque limiting means. The torque limiting means has an adjusting device for switching from a low torque value for the clamping of the pipe to a high torque value for releasing the pipe.

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