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:
Dec. 05, 1989
Filed:
Feb. 19, 1988
Applicant:
Inventors:
Stephen L Bessinger, Morgantown, WV (US);
Michael G Nelson, Bethel Park, PA (US);
Assignee:
Consolidation Coal Co., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21C / ;
U.S. Cl.
CPC ...
299-1 ; 299 30 ; 175 40 ;
Abstract
The method and apparatus for mapping mine excavation or tunnel entry conditions by mounting an array of sensors on a vehicle some of which provide knowledge of the vehicle location in the entry and others of which provide knowledge of entry conditions and by interpreting data collected from the sensors, a map can be generated of the entry strata for a given vehicle location in the entry. This map can be compared with similarly generated maps to indicate changes in the entry condition.