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:
May. 10, 1988
Filed:
Feb. 19, 1987
Applicant:
Inventors:
Assignee:
MAN Technologie GmbH, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21J / ; B21D / ;
U.S. Cl.
CPC ...
72454 ; 72 57 ; 72367 ; 72393 ; 72407 ;
Abstract
For the production of coaxial corrugations in the walls of thin-walled tubes with very tight tolerances, the invention provides a device having jaws adapted to be moved equally in opposite directions and which press against the ends of the tube so as to have a corrugation formed therein so as to feed the tube wall axially towards the corrugation in the process of being generated. The jaws are moved by means of a central lead screw with screw threads of opposite hand.