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:
Oct. 02, 1984
Filed:
Dec. 02, 1981
Thomas M Thompson, Beverly, WV (US);
Other;
Abstract
A variable length conveyor assembly for use in the continuous underground mining of coal. The conveyor assembly comprises a base from which are adapted to extend a plurality of telescoping support elements. The support elements carry belt supporting members at the upper surfaces thereof and a plurality of longitudinal supports at the side surfaces thereof. The longitudinal supports, in turn, carry a plurality of rollers. An endless belt is supported by the belt supporting members and the rollers. Drive elements are located in the base for the endless belt. Cable rollers are associated with the support elements for purposes of receiving a control cable which is threaded through the cable rollers. Cable drive elements are positioned in the base which are adapted to move the control cable in a manner to selectively expand and contract the conveyor assembly. In alternate embodiments of the invention, the telescoping support elements are moved inwardly and outwardly by hydraulic rams or, alternately, chain drives.