Patents Represented by Law Firm Trexler, Bushnell, Giargiogi & Blackstone, Ltd.
  • Patent number: 6139112
    Abstract: A continuous type mining machine which includes a pair of articulated support arms extending forwardly from a self-propelled chassis and rotatably carrying a transverse drive shaft divided into two half-shafts, on which a central drum between the two arms, and an end drum beyond each arm, are mounted, the drums being provided externally with a plurality of replaceable mineral cutter picks, and with a plurality of water spray nozzles, and also having a water supply network to the nozzles. The machine includes a third support arm, which incorporates a water supply, located between the pair of articulated support arms.
    Type: Grant
    Filed: November 10, 1998
    Date of Patent: October 31, 2000
    Assignees: Minnovation Limited, Kennametal, Inc.
    Inventor: George Albert Parrott