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:
Jul. 19, 2005
Filed:
Jun. 25, 1998
Applicants:
John Adam Meyers, The Woodlands, TX (US);
Carl W. Keith, Houston, TX (US);
Huy D. Bui, Houston, TX (US);
Inventors:
John Adam Meyers, The Woodlands, TX (US);
Carl W. Keith, Houston, TX (US);
Huy D. Bui, Houston, TX (US);
Assignee:
Smith International, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B010/36 ; E21B010/56 ;
U.S. Cl.
CPC ...
Abstract
A percussion drill bit is provided that has at least two different pluralities of inserts extending from the bit head to better match the conditions seen on the bit head during drilling. The preferred embodiment has a plurality of large inserts with a polycrystalline diamond layer located at least in the gage row and a plurality of smaller inserts located at least in the inner rows.