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:
Oct. 24, 2017

Filed:

Aug. 23, 2016
Applicant:

Joy MM Delaware, Inc., Wilmington, DE (US);

Inventors:

Brian Worthington, Leicestershire, GB;

Phil Rees, Worcester, GB;

Tim Proctor, Worcester, GB;

Gordon Powell, Malvern, GB;

Robert Smith, Malvern, GB;

Assignee:

Joy MM Delaware, Inc., Wilmington, DE (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65G 23/44 (2006.01); E21F 13/00 (2006.01); E21F 13/06 (2006.01); E21C 27/02 (2006.01);
U.S. Cl.
CPC ...
E21F 13/06 (2013.01); B65G 23/44 (2013.01); E21F 13/00 (2013.01); B65G 2203/0266 (2013.01); B65G 2203/042 (2013.01); E21C 27/02 (2013.01);
Abstract

Systems and methods for controlling a conveyor in a mining system. The conveyor includes a sprocket, a chain, a hydraulic cylinder, one or more sensors, and a controller. In one implementation, the method includes sensing a characteristic associated with the conveyor, generating a signal based on the characteristic, determining a tension associated with the chain based on the signal, determining an amount of chain stretch based on the tension, and modifying a position of the hydraulic cylinder based on the amount of chain stretch.


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