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:
Jun. 15, 1982
Filed:
Jun. 05, 1980
Applicant:
Inventor:
Percy W Schumacher, Houston, TX (US);
Assignee:
Reed Rock Bit Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
175374 ; 175410 ;
Abstract
Inserted hard metal cutting elements are disclosed which are advantageous for inserting into the cutters of drilling bits used in drilling underground formations. The inserted cutting elements comprise asymmetrical inserts placed in at least one row of a cutter in alternating alignment circumferentially therearound.