Patent ID: 7386908

Claim:
A structured foam pig intended to be passed through an inside of a pipeline in order to facilitate scraping of the inside of said pipeline when propelled by a liquid flowing inside of said pipeline, comprising: an elongated and substantially cylindrical polymer foam body including a plurality of channels that extend at right angles to a longitudinal axis of said cylindrical body, said channels being equally spaced around said cylindrical body and being coiled around said cylindrical body, and two ends, each end including a bullet-nosed surface connected with said cylindrical body and a conical surface provided from said bullet-shaped surface, each of said channels of said cylindrical body beginning close to one of the two ends and ending close to the other end of the two ends; and a plurality of elastomeric cleaning structural elements located inside said cylindrical body, each of said plurality of elastomeric cleaning structural elements including a cylindrical central structural element and scraping extensions coiled around the cylindrical structural element, said plurality of elastomeric cleaning structural elements not interconnected to one another.