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. 30, 2006
Filed:
May. 23, 2003
Philippe Lamoine, Clermont-Ferrand, FR;
Gérard Crosnier, Ceyrat, FR;
Serge Nicolas, Clermont-Ferrand, FR;
Philippe Lamoine, Clermont-Ferrand, FR;
Gérard Crosnier, Ceyrat, FR;
Serge Nicolas, Clermont-Ferrand, FR;
Michelin Recherche et Technique S.A., Granges-Paccot, CH;
Abstract
An extrusion device () for manufacturing a product based on a rubber mix, which comprises a rotary roller (), an inlet orifice () for the rubber mix and a vault () partially circumferentially covering the external surface () of the roller (), the rubber mix being driven from the inlet orifice () into the air gap situated between the vault () and the roller () towards an extrusion orifice () defining the profile of the product. The extrusion orifice is delimited by a wall () which cooperates with the external surface () of the roller (), and the vault () carries on its internal surface oriented towards the roller projecting threads in order to delimit with the surface () of the roller a chamber for plasticization of the mix, at least two of the threads extending substantially axially of the roller.