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:
Apr. 28, 1992
Filed:
Mar. 01, 1991
John H Pennington, Green River, WY (US);
Frank Silberman, Green River, WY (US);
General Chemical Corporation, Parsippany, NJ (US);
Abstract
An elevated roadway for use with a self-propelled continuous haulage unit in underground mining consists of a multiplicity of substantially identical roadway units joined together end to end. Each unit has a pair of elongated bottom side beams joined by bottom cross beams, columns arranged in laterally opposite pairs and supported on the side beams and a pair of elongated track members supported on the upper ends of the columns and defining a track for trams to move over the roadway above the haulage unit. Longitudinal brace beams and transverse brace beams join the columns. The durability and rigidity of the unit is enhanced by diagonal brace beams connecting selected ones of the columns and by gussets at each joint between the bottom side beams and the bottom transverse beams.