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:
Jan. 26, 1988
Filed:
Jan. 29, 1987
Gene R Ralls, Tulsa, OK (US);
T. D. Williamson, Inc., Tulsa, OK (US);
Abstract
A cleaning pig for use in a pipeline to be moved through the pipeline by the flow of fluid therethrough, the pig being formed of a cylindrical body having shallow depth channels formed in paralleled spiral patterns on the cylindrical surface, and an elongated, narrow, brush member positioned in each of the channels, each of the brush members having bristles which extend generally radially outward from the pig body, the width of the brush members being less than the width of the channels providing fluid flow passageways within each of the channels permitting fluid to flow past the pig as it is moved through a pipeline to thereby flush debris which has been brushed from the pipeline sidewall forwardly of the pig so that the debris will be carried out of the pipeline.