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:
Jun. 17, 2008
Filed:
Jan. 22, 2004
Antonio Carlos Ferreira Lino, Rio de Janeiro, BR;
Ricardo Wagner Capllonch, Teresópolis, BR;
Antonio Carlos Ferreira Lino, Rio de Janeiro, BR;
Ricardo Wagner Capllonch, Teresópolis, BR;
Petroleo Brasileiro S/A - Petrobras, Rio de Janeiro, BR;
Abstract
The present invention relates to a device intended to be passed through a pipeline of variable diameter, propelled by a liquid flowing inside said pipeline. The device has an elongated cylindrical body () made of polymer foam, with a number of deep channels () equally spaced from each other, coiled around the length of the cylindrical body () of the pig (), beginning close to one end of the body () and ending close to the other end. These ends have a basically bulled-nosed shape, conferring a symmetrical aspect. Structural cleaning elements (), not interconnected, are inserted inside the cylindrical body () of the pig. They are made of elastomeric material and have a central core () with spiral scraping extensions () of the same number as the deep channels () in the body () of the pig (). The spiral scraping extensions () are at an angle to the axis of the cylindrical body () of the pig () as well as to the scraping extensions () of the adjacent modules, inasmuch as they follow the configuration of the spiral channel ().