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:
Feb. 12, 2019
Filed:
Feb. 10, 2017
Applicant:
Harnischfeger Technologies, Inc., Wilmington, DE (US);
Inventor:
Jason E. Gaska, Columbus, WI (US);
Assignee:
Joy Global Surface Mining Inc, Milwaukee, WI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 15/00 (2006.01); E21B 19/18 (2006.01); E21B 7/02 (2006.01);
U.S. Cl.
CPC ...
E21B 19/18 (2013.01); E21B 7/02 (2013.01); E21B 15/00 (2013.01);
Abstract
A drill bit retaining assembly includes a ring, a bit clamp member coupled to the ring, and an actuator coupled to the ring. The bit clamp member is movable via the actuator between a first position, in which the bit clamp member is configured to be engaged with a drill bit and a second position in which the bit clamp member is configured to be disengaged from the drill bit.