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:
Sep. 20, 2016
Filed:
Mar. 26, 2007
Ettore Cernuschi, Bareggio, IT;
Stefano Deplano, Genoa, IT;
Ettore Cernuschi, Bareggio, IT;
Stefano Deplano, Genoa, IT;
DANIELI & C. OFFICINE MECCANICHE S.P.A., Buttrio, IT;
Abstract
A mandrel holder head with release/fastening device of the mandrel for rolling metallic tubes comprises a mandrel holder () which accommodates within an internal seat a half collar () of externally cylindrical shape through an opening in the side wall. In the internal seat are accommodated both an end part () of the mandrel shank and the half collar () through the opening. The half collar has an internal cavity with a second longitudinal side opening which accommodates a second part () of the shank of diameter smaller than that of the first part (). The half collar is divided along an axial direction into two cylindrical parts () which have different diameters. The locking member () of the half collar () holds it in the mandrel holder () seat in working conditions, while allowing shank release with an axial movement in locked conditions.