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.

Date of Patent:
Aug. 02, 2022

Filed:

Jan. 17, 2020
Applicant:

Caterpillar Global Mining Equipment Llc, Denison, TX (US);

Inventors:

Carl J. Moberg, Dunlap, IL (US);

Rex A. Glover, Deer Creek, IL (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 19/02 (2006.01); E21B 47/04 (2012.01); E21B 47/09 (2012.01); E21B 44/02 (2006.01);
U.S. Cl.
CPC ...
E21B 19/02 (2013.01); E21B 47/04 (2013.01); E21B 47/09 (2013.01); E21B 44/02 (2013.01);
Abstract

Systems and methods for drill head position determination are disclosed. A method for determining a position of a drill head of a drilling machine may include: retrieving a stored rotational position of at least one sheave and a stored position of the drill head; measuring the rotational position of the at least one sheave using a sheave sensor; initially calibrating the rotational position of the at least one sheave before the drill head moves; dynamically determining the position of the drill head based on the rotational position of the at least one sheave while the drill head is moved; and storing the rotational position of the at least one sheave and the position of the drill head during a shutdown event of the drilling machine.


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