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:
Apr. 08, 2014
Filed:
Jul. 16, 2009
George Telfer, Aberdeen, GB;
James Linklater, Banffshire, GB;
James Atkins, Aberdeen, GB;
Specialised Petroleum Services Group Limited, Aberdeen, GB;
Abstract
A cleaning tool () for use in cleaning ferrous material from a wellbore has a magnetic cleaning element () mounted to a tool body () within a slot () using a releasable concealed interference fit fastener assembly () comprising a fastener member having a head (), and a shank () with a configured end () and a deformable fastener ring () adapted to fit closely over the shank, and a press-fit collar () adapted to deform the deformable fastener ring upon the configured end of the shank when assembled, and wherein the respective head and collar are each flanged to permit an interference fit with a corresponding contact surface of the tool body around said slot.