The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 26, 1977
Filed:
May. 01, 1975
Applicant:
Inventors:
Gunter Schumann, Ober Roden, Messenhausen, DT;
Werner Becker, Liederbach, DT;
Assignee:
Messer Griesheim GmbH, Frankfurt am Main, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ; H02P / ;
U.S. Cl.
CPC ...
318432 ; 30 96 ; 219161 ; 269216 ; 318434 ;
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.