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. 17, 2015
Filed:
Jul. 27, 2010
Rahul Bijai, Spring, TX (US);
Zhehua Zhang, The Woodlands, TX (US);
Vikrant Bhadbhade, Spring, TX (US);
Prabhakaran K. Centala, The Woodlands, TX (US);
Rahul Bijai, Spring, TX (US);
Zhehua Zhang, The Woodlands, TX (US);
Vikrant Bhadbhade, Spring, TX (US);
Prabhakaran K. Centala, The Woodlands, TX (US);
Smith International, Inc., Houston, TX (US);
Abstract
A method of manufacturing a roller cone drill bit may include forming a body of a single piece having an upper end and a lower end; machining at the lower end of the body at least two journals extending downward and radially outward from a central axis of the body; machining at least one of a ball passage, a hydraulic fluid passageway, a grease reservoir, and a lubricant passageway; and mounting roller cones on the at least two journals.