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:
Mar. 31, 2015
Filed:
Jun. 03, 2011
Yuelin Shen, Spring, TX (US);
Youhe Zhang, Spring, TX (US);
Yuri Burhan, Spring, TX (US);
Michael A. Siracki, The Woodlands, TX (US);
Mahavir Nagaraj, Spring, TX (US);
Bala Durairajan, Houston, TX (US);
Scott D. Mcdonough, The Woodlands, TX (US);
Peter Thomas Cariveau, Houston, TX (US);
Yuelin Shen, Spring, TX (US);
Youhe Zhang, Spring, TX (US);
Yuri Burhan, Spring, TX (US);
Michael A. Siracki, The Woodlands, TX (US);
Mahavir Nagaraj, Spring, TX (US);
Bala Durairajan, Houston, TX (US);
Scott D. McDonough, The Woodlands, TX (US);
Peter Thomas Cariveau, Houston, TX (US);
Smith International, Inc., Houston, TX (US);
Abstract
A drill bit includes a bit body, a plurality of blades extending radially from the bit body, a plurality of cutter pockets disposed on the plurality of blades, at least one rolling cutter disposed in one of the cutter pockets, wherein each rolling cutter has a substrate, a cutting face, a cutting edge, and a side surface, and at least one blocker positioned adjacent to each of the at least one rolling cutters on a leading face of the blade, wherein each blocker has a retention end and an attachment end. The retention end of each blocker is positioned adjacent to a portion of the cutting face of each rolling cutter to retain the rolling cutter in the cutter pocket and the attachment end is attached to a portion of the blade.