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:
Jun. 18, 2024

Filed:

Dec. 18, 2020
Applicants:

Sandvik Mining and Construction Tools Ab, Sandviken, SE;

Sandvik Mining and Construction Australia (Production/supply) Pty Ltd, Milton, AU;

Inventor:

Osvaldo Vallati, Heatherbrae, AU;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21F 17/18 (2006.01); E21D 21/00 (2006.01);
U.S. Cl.
CPC ...
E21D 21/0093 (2013.01); E21D 21/0033 (2013.01); E21F 17/185 (2013.01);
Abstract

A sensor assembly for a rock bolt, wherein the rock bolt includes a central rod, a split tube and a wedge anchor assembly fitted around the central rod, a rock plate, and a nut for attachment to an outer end of the central rod. The sensor assembly includes a distance sensor, a bracket for attaching the distance sensor to an outer portion of the split tube, an elongate spacing member configured to be fitted around the split tube between the nut and the rock plate to keep the nut and the rock plate spaced apart. The spacing member has an opening extending along at least a portion of the length thereof, the opening being sized large enough to allow movement of the bracket along a portion of the length of the spacing member with the distance sensor attached to the outer portion of the split tube by the bracket.


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