logo

For the Inventor, By the Inventor

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.:

US 11623187 B1

PDFFull Text
Date of Patent:
Apr. 11, 2023

Filed:

Jan. 20, 2021

Extrusion device and process for extruding a semi-finished product made of elastomeric material

Applicant:

Pirelli Tyre S.p.a., Milan, IT;

Inventors:

Cesare Emanuele Amurri, Milan, IT;

Gaetano Lo Presti, Milan, IT;

Assignee:

PIRELLI TYRE S.p.A., Milan, IT;

Attorney:

Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.

Primary Examiner:

David L Sorkin

Int. Cl.
CPC ...
B29C 48/28 (2019.01); B29C 48/625 (2019.01); B01F 27/1143 (2022.01); B29C 48/88 (2019.01); B29C 48/07 (2019.01); B29C 48/285 (2019.01); B29C 48/375 (2019.01); B01F 35/91 (2022.01); B01F 35/221 (2022.01); B01F 35/71 (2022.01); B29B 11/10 (2006.01); B29C 48/465 (2019.01); B01F 35/90 (2022.01); B01F 101/00 (2022.01);
U.S. Cl.
CPC ...
B01F 27/1143 (2022.01); B01F 35/2215 (2022.01); B01F 35/71731 (2022.01); B01F 35/91 (2022.01); B29B 11/10 (2013.01); B29C 48/07 (2019.02); B29C 48/2888 (2019.02); B29C 48/387 (2019.02); B29C 48/625 (2019.02); B29C 48/914 (2019.02); B01F 2035/98 (2022.01); B01F 2101/2805 (2022.01); B29C 48/467 (2019.02); B29C 2948/924 (2019.02); B29C 2948/926 (2019.02); B29C 2948/92209 (2019.02); B29C 2948/92704 (2019.02); B29C 2948/92885 (2019.02);
Abstract

The invention relates an extrusion device () for extruding a semi¬finished product made of elastomeric material, comprising an extrusion body () extending along a feeding direction (A) and a pump () arranged downstream of the extrusion body () along said feeding direction (A). The extrusion body () comprises a hopper () for loading an elastomeric material and an extrusion screw () extending along said feeding direction (A) and having an inlet portion () arranged close to the hopper () and an exit portion () arranged close to the pump (). The extrusion body () also comprises a motorised roller () arranged at the inlet portion () of the extrusion screw () and configured to receive the elastomeric material from the hopper () and feed it to the extrusion screw (). The extrusion screw () has a length and a diameter such that the ratio between length and diameter is comprised between 4 mm and 8 mm. The invention also relates to an extrusion process carried out through the aforementioned extrusion device ().

Find Patent Forward Citations

Loading…