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:
Jan. 27, 1987
Filed:
Nov. 30, 1984
Wilhelm Sebastian, Heiligenhaus, DE;
Wilhelm Nickel, Muelheim, DE;
Klaus-Peter Schirmag, Ratingen, DE;
Mannesmann AG, Duesseldorf, DE;
Abstract
A mandrel rod with or without rolled tubes thereon is held by four guide structures, two arranged above and two below with respect to the axis of rolling, and each being arranged on a lever, these levers are arranged in pairs to both sides of the rolling axis, and they are particularly interconnected and connected to a common drive to permit common radial retraction of the guide structure; these guide structures have basically three different positions, one of full retraction permitting a mandrel rod with rolled tubes thereon to be removed by lifting while simultaneously a fresh mandrel rod is placed into the rolling axis from below; in a second position of the guide structures they engage a mandrel rod in the rolling axis, and in the third position they form-fittingly engage a hollow on the mandrel rod in the rolling axis.