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. 02, 2020
Filed:
Dec. 21, 2017
Applicant:
Center Rock Inc., Berlin, PA (US);
Inventor:
Leland H. Lyon, Roanoke, VA (US);
Assignee:
Center Rock Inc., Berlin, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 10/22 (2006.01); E21B 10/38 (2006.01); E21B 10/44 (2006.01); E21B 4/14 (2006.01);
U.S. Cl.
CPC ...
E21B 10/22 (2013.01); E21B 4/14 (2013.01); E21B 10/38 (2013.01); E21B 10/445 (2013.01);
Abstract
A down-the-hole drill hammer is provided that includes a housing, a drill bit proximate a distal end of the housing, and a roller bearing assembly. The roller bearing assembly circumscribes the drill bit. The roller bearing assembly includes a race and a plurality of rollers. The plurality of rollers are operatively engaged with the race.