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. 02, 1987
Filed:
Dec. 10, 1985
Arnold G Wilcox, Jr, Shady Spring, WV (US);
Roger D Plumley, Crab Orchard, WV (US);
Fairchild International, Inc., Beckley, WV (US);
Abstract
A continuous mining machine comprising an elongated conveyor assembly for continuously conveying coal cut from a coal seam rearwardly away from the face of the coal seam being cut having a frame structure associated therewith. A power driven cutting assembly is disposed forwardly with respect to the frame structure for cutting coal from the coal seam for conveyance rearwardly by the conveyor assembly. A pair of power driven endless track units is provided for mounting the cutting and conveyor assemblies for movement between a tramming position wherein the assemblies are supported on power driven endless track units in a generally balanced condition for transport within the mine and an operative cutting position wherein the assemblies are moved forwardly in a generally unbalanced condition. Vertically extensible and retractable jacks are carried by the power driven endless track units for extension into mine roof engagement so as to stabilize the units when the cutting assemblies are moved from the tramming position into the operative cutting position. Power operated units are provided for moving the assemblies from the tramming position into the operative cutting position while the vertically extensible and retractable means is extended into mine roof engagement.