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:
Nov. 24, 1998
Filed:
Aug. 29, 1997
Alfredo Poloni, Fogliano Di Redipuglia, IT;
Fausto De Marco, Remanzacco, IT;
Danieli & C. Officine Meccaniche SPA, Buttrio, IT;
Abstract
A lined spiral-forming pipe (11) for a spiral-forming head of spiralling machines for metallic wire, comprising a plurality of wear-resistant inserts having an inner hollow through which the metallic wire passes and an outer surface connecting with the inner surface of the spiral-forming pipe (11) and an inner through hollow (12). The wear-resistant inserts (10) are substantially all alike with a substantially annular conformation with a longitudinal dimension ('1') mating with the minimum radius of curvature of the spiral-forming pipe (11), and have rounded front faces (10a) at least partly convex. The inner through hollow (12) comprises a first lead-in segment (12a) to introduce the metallic wire and a second following segment (12b) which is substantially cylindrical. Also included is a method to recondition a spiral-forming pipe (11) of a spiral-forming head in spiralling machines for metallic wire.