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. 17, 2025

Filed:

Jun. 25, 2021
Applicant:

J.h. Fletcher & Co., Huntington, WV (US);

Inventors:

Nathan U. Payne, South Point, OH (US);

Marc D. Endicott, Kenova, WV (US);

Gregory E. Hinshaw, Proctorville, OH (US);

Timothy D. Burgess, South Point, OH (US);

Assignee:

J.H. FLETCHER & CO., Huntington, WV (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21D 20/00 (2006.01);
U.S. Cl.
CPC ...
E21D 20/006 (2013.01);
Abstract

An apparatus is for installing support for a surface of a mine passage, such as a mine roof, using an object, such as a roof bolt. The apparatus includes a driver adapted to advance toward the surface for driving the object into the surface. A gripper includes first and second arms for gripping the object in a deployed position, such as upper and lower arms. The arms are linked such that engagement by one of the arms with the driver during advance causes the arms to retract towards each other (downwardly, for example, in the case of the upper arm, and upwardly, for example, in the case of the lower arm). Related methods are also disclosed.


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