Patents Assigned to Royal Hydraulics Service and Manufacturing Company, Inc.
  • Integrated drill chuck
    Patent number: 11090733
    Abstract: An integrated drill chuck for installing mine roof bolts includes a single integrated piece, the single integrated piece including a body defining a receiving cavity, where the receiving cavity is configured to receive and secure a bit having a square-shaped end and a bit having a hex-shaped end. A drill for installing mine roof bolts is also disclosed. A method for installing mine roof bolts is also disclosed.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: August 17, 2021
    Assignee: Royal Hydraulics Service and Manufacturing Company, Inc.
    Inventors: George Morrell, Mark Crable