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:
May. 26, 1987
Filed:
May. 23, 1986
Applicant:
Inventors:
William W King, Houston, TX (US);
Arthur M Handsel, Spring, TX (US);
David M Nguyen, Houston, TX (US);
Assignee:
Hughes Tool Company-USA, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
175409 ; 175417 ; 7610 / ;
Abstract
A matrix bit is shown of the type having a metallic mandrel with a connecting end for connection in a well pipe string leading to the well surface. An opposite end is covered with a cast matrix material which defines a central bit body. A plurality of integral blades are formed of the cast matrix material and extend axially and radially from the central bit body. Each of the blades is reinforced by a metallic extension which is contained within the matrix material and extends coaxially with each blade.