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. 06, 2010
Filed:
May. 16, 2006
Gary Portwood, Livorno, IT;
Peter Wilson, Norman, OK (US);
Luca Tedeschi, Provincia di Pisa, IT;
Bryce Baker, Houston, TX (US);
Daniel W. Brietzke, Richmond, TX (US);
Gary Portwood, Livorno, IT;
Peter Wilson, Norman, OK (US);
Luca Tedeschi, Provincia di Pisa, IT;
Bryce Baker, Houston, TX (US);
Daniel W. Brietzke, Richmond, TX (US);
Smith International, Inc., Houston, TX (US);
Abstract
A rolling cone drill bit comprises a plurality of bottomhole cutter elements positioned in a first circumferential row, wherein at least one of the cutter elements comprises a cutting portion extending from a base portion to a point furthermost from the base portion, defining an extension height. The ratio of the cross-sectional area of the cutter element at a point equal to ninety-four percent of the extension height to the cross-sectional area of the cutter element base is greater than 0.2. Moreover, the ratio of the extension height to the base diameter is not greater than 0.75.