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:
Jun. 15, 1993
Filed:
Mar. 31, 1992
Applicant:
Inventors:
Chung F Liao, Kingwood, TX (US);
George W Graham, Wilkinson, WV (US);
Assignee:
Zeigler Coal Holding Company, Fairview Heights, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21C / ;
U.S. Cl.
CPC ...
299 12 ; 261116 ; 299 43 ;
Abstract
An air scrubbing system for removing dust produced by longwall shearers from the operator's work area. The system uses a plurality of small scrubbing units mounted on the shearer. Each of the scrubbing units utilizes a series of twin fluid atomizers located at the inlet of the unit to produce a fine water mist for capturing the respirable dust. The scrubbing units return the dust-laden mist to the coal face.