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. 18, 2014
Filed:
Apr. 20, 2011
Shantanu Swadi, Cypress, TX (US);
Lance Underwood, Cypress, TX (US);
Jack Marshall, Lost Creek, WV (US);
Charles Dewey, Houston, TX (US);
Kevin Harrington, Houston, TX (US);
Shantanu Swadi, Cypress, TX (US);
Lance Underwood, Cypress, TX (US);
Jack Marshall, Lost Creek, WV (US);
Charles Dewey, Houston, TX (US);
Kevin Harrington, Houston, TX (US);
Smith International, Inc., Houston, TX (US);
Abstract
A percussion drilling assembly for boring into the earth is disclosed. The percussion drilling assembly includes a top sub, a casing coupled to the top sub, and a feed tube assembly disposed within the top sub and the casing. The feed tube assembly includes a non-rigid coupling having a throughbore and a tubular body disposed therein. The tubular body is translatable in the radial position and/or rotatable relative to a longitudinal centerline extending through the non-rigid coupling.