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. 25, 2005
Filed:
Jan. 03, 2003
David Mason, Anaheim Hills, CA (US);
Albert DE Pont, Dongen, NL;
Hans Van Rijzingen, Oosterhout, NL;
Anton Krijnen, Klundert, NL;
Cornelis DE Laat, Etten-Leur, NL;
David Mason, Anaheim Hills, CA (US);
Albert De Pont, Dongen, NL;
Hans Van Rijzingen, Oosterhout, NL;
Anton Krijnen, Klundert, NL;
Cornelis De Laat, Etten-Leur, NL;
Varco I/P, Inc., Orange, CA (US);
Abstract
A rotary slip for supporting a drill string having a plurality of slip segments connected to define an opening for insertion of the drill string, wherein each slip segment comprises a head region, a toe region, and an inner radial surface axially extending between the head and toe regions, and wherein the inner radial surface of each slip segment comprises a circumferential groove. A plurality of axially aligned drill string gripping inserts are attached to each slip segment between the head region and the circumferential groove, wherein each insert comprises a gripping surface for contacting the drill string. A load ring is disposed within the circumferential groove of each slip element, the load ring comprising at least one securing element which is engaged by one of the plurality of axially aligned inserts to secure the load ring within the circumferential groove.