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:
Nov. 07, 2023
Filed:
Jul. 22, 2020
Applicant:
Varel Europe S.a.s., Pau, FR;
Inventors:
Assignee:
Varel Europe S.A.S., Nousty, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/42 (2006.01); E21B 10/62 (2006.01); E21B 10/32 (2006.01);
U.S. Cl.
CPC ...
E21B 10/325 (2013.01); E21B 10/42 (2013.01); E21B 10/62 (2013.01);
Abstract
A bit for drilling a wellbore includes: a shank having a coupling formed at an upper end thereof; a body removably attached to a lower end of the shank and having a blade receptacle formed therethrough; a blade fixed to the body; a plurality of superhard cutters mounted along a leading edge of the fixed blade; a blade disposed in the blade receptacle and longitudinally movable relative to the body between an extended position and a retracted position; a plurality of superhard cutters mounted along a leading edge of the movable blade; and a spring disposed between the shank and the movable blade and biasing the movable blade toward the extended position.