US Patent 7654477 Pulverization process of a vulcanized rubber material

Patent 7654477 was granted and assigned to Pirelli on February, 2010 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Pirelli

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7654477

Date of Patent

February 2, 2010

Patent Application Number

10537172

Date Filed

October 14, 2003

Patent Primary Examiner

‌

Fred M Teskin

Patent abstract

A process for producing a rubber powder from a vulcanized rubber material by the steps of: a) feeding a grinding device with the vulcanized rubber material; b) contacting the vulcanized rubber material with at least one liquid coolant; c) introducing at least one grinding aid additive into the grinding device; d) operating the grinding device so as to grind the vulcanized rubber material to form a rubber powder, and e) discharging the rubber powder from the extruder.