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:
Sep. 11, 2012
Filed:
Dec. 30, 2008
Applicants:
Robert E. Able, Bozeman, MT (US);
Thomas J. Oothoudt, Little Falls, MN (US);
Inventors:
Robert E. Able, Bozeman, MT (US);
Thomas J. Oothoudt, Little Falls, MN (US);
Assignee:
Longyear TM, Inc., South Jordan, UT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 25/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A head assembly includes a body, a spearhead operatively associated with the body and configured to translate axially relative to the body, and at least one latch operatively associated with the spearhead and the body. The latch is configured to move between an extended position and a retracted position relative to the body in response to axial translation of the spearhead relative to the body. In an extended position, the latch covers more than 25% of the circumference of the body adjacent the latches.