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:
Oct. 18, 2011
Filed:
Dec. 17, 2008
Urbano Faina, Comate d'Adda, IT;
Urbano Faina, Comate d'Adda, IT;
IBF S.p.A., Cornate D'Adda (Frazione Colnago), IT;
Abstract
Method for bending tubular articles with a relative ratio of the bending radius (R) and the outer diameter (D) of the finished pipe which is less than 3, comprising the following steps: forging an article made of material with a predefined composition depending on the final use and with a predefined length (L) in the longitudinal direction and an outer diameter (D); providing a die having an asymmetrical bottom die half with seat for the pipe; and a top die half with punch asymmetrically arranged in the longitudinal direction (X-X) with respect to the vertical center axis of the die; heating the article in an oven to the required temperature for forging depending on the specific composition of the material; positioning the article inside the bottom die half in the longitudinal direction; closing of the two die halves so as to start bending of the article; opening the die; and extracting the bent article.