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:
Dec. 08, 1987
Filed:
Jul. 25, 1986
Jesse J Loukanis, Houston, TX (US);
Will W Mathews, Germantown, TN (US);
Raymond L Tune, Houston, TX (US);
NL Industries, Inc., New York, NY (US);
Cummins Engine Co., Columbus, IN (US);
Abstract
In a method of assembling a roller cone type rock bit, on a body having a tool joint adjacent one end and at least one leg portion adjacent the other end, the leg portion is provided with a longitudinally outer surface which is inclined longitudinally inwardly from its radially outer extremity to its radially inner extremity; on a base for a cone assembly, an end surface is provided configured to mate with the outer surface of the leg portion of the body; a roller cone is rotatably mounted on the base distal the end surface to form a cone assembly, and the end surface of the base is mated with the outer surface of the leg portion; the base is then welded to the leg portion along the juncture of the mating surfaces to mount the cone assembly on the leg portion.