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:
Feb. 25, 2014
Filed:
Mar. 19, 2009
Alan Jackson Marshall, Lost Creek, WV (US);
Shantanu Swadi, Cypress, TX (US);
James A. Simson, Meadows Place, TX (US);
Alan Jackson Marshall, Lost Creek, WV (US);
Shantanu Swadi, Cypress, TX (US);
James A. Simson, Meadows Place, TX (US);
Smith International, Inc., Houston, TX (US);
Abstract
A percussion drilling assembly includes an outer tubular, an inner tubular coupled within the outer tubular at a threaded region, a drill bit slideably disposed within the inner tubular, and a locking system located proximate the threaded region. The locking system is actuatable by translation of the drill bit relative to the locking system, whereby the locking system is configured to prevent rotation of the inner tubular relative to the outer tubular in at least a first direction.