Patents Assigned to Advanced Mining Systems, Inc.
  • Mine roof bolt with resin retention and resin mixing device
    Patent number: 5073065
    Abstract: A mine roof bolt is provided including a tapered shoulder portion extending from a terminal threaded portion to a main body portion. The threaded portion includes a locking mechanism for mechanically engaging the side walls of a mine roof bore. A resin retention and resin mixing device rests on the tapered shoulder portion of the mine roof bolt to aid in chemically bonding the bolt to the mine roof bore.
    Type: Grant
    Filed: December 6, 1990
    Date of Patent: December 17, 1991
    Assignee: Advanced Mining Systems, Inc.
    Inventor: Charles W. Kleineke