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. 15, 1986
Filed:
Jan. 03, 1984
Maurice K LeBegue, Argillite, KY (US);
Gerald L Baum, Belleville, IL (US);
National Mine Service Company, Pittsburgh, PA (US);
Abstract
A continuous mining machine includes a mobile body portion with a cutter drum member rotatably mounted on the front of a boom member which extends forwardly of the body portion. The cutter drum member has an intermediate drum section and a pair of canted end drum sections. Driven input shafts extend through openings between the intermediate section and the end drum sections. Each input shaft is drivingly connected to a first stage of a two stage planetary gear assembly which surrounds an end drum drive shaft that extends the length of each end drum section. A second stage of the planetary gear assembly is drivingly connected to and is axially aligned with the first stage to transmit rotation outwardly to the end of the end drum section. A shearable driving coupling is axially positioned on the end drum drive shaft at the end of the end drum section. An external portion of the drive coupling is connected to the second stage and an internal portion is connected to the end drum drive shaft. The drive coupling transmits rotation from the second stage to the end drum drive shaft and therefrom to a drive shaft for rotating the intermediate drum section. In the event the load on the end drum section during the mining operation exceeds a predetermined magnitude, the drive coupling shears to prevent damage to the other drive components under overload conditions.