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. 31, 1995
Filed:
Apr. 14, 1994
Dennis R Smith, Tulsa, OK (US);
TDW Delaware, Inc., Wilmington, DE (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 of foam plastic material, the body having a cylindrical surface and the cylindrical surface having shallow depth channels formed in parallelled spiraled patterns. An elongated cleaning member is positioned in each of the channels. Each of the cleaning members has an integral substratum of a width less than the width of a channel and each of the cleaning members has integral upstanding spaced apart studs projecting from the substratum upper surface, the studs each having a top surface that extends above the pig body external cylindrical surface, the substratum lower surface being bonded to the cylindrical body. The upstanding studs each has a top surface to non-abrasively contact and clean the interior surface of a pipeline.