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:
Nov. 22, 2011
Filed:
Apr. 26, 2010
Applicant:
John Tout, Worcester, GB;
Inventor:
John Tout, Worcester, GB;
Assignee:
Joy MM Delaware, Inc., Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65G 43/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A device for detecting and adjusting the tension of a scraper chain. The device identifies broken chain as it leaves the return sprocket and enters the top race of the conveyor. When detected, the chain can be stopped automatically by the armored face conveyor control system, to avoid the potential for further damage, and warn the operators that repair of the chain is required. The device also has a conveyor with sliding frames at both ends to allow the conveyor ends to be independently adjusted to each end of the coal block, while maintaining good chain tension and control.