Patents Assigned to American Mine Services
  • Mining drill steels
    Publication number: 20040016573
    Abstract: A drill steel for use in mine roof bolting operations. To eliminate or reduce the possibility of fracture in drill steels used in the roof bolting operations in mines the square or hexagonal surfaces of such drill steels or the elements such as couplings, collars, and recesses that are to be connected to drill steels are machined rather than forged or welded. Pieces are joined by press fitting for assembly purposes.
    Type: Application
    Filed: July 21, 2003
    Publication date: January 29, 2004
    Applicant: American Mine Services
    Inventors: Terry L. Rein, Terry L. Rein
  • Mining drill steels and methods of making the same
    Patent number: 6533049
    Abstract: To eliminate or reduce the possibility of fracture in drill steels used in the roof bolting operations in mines the square or hexagonal surfaces of such drill steels or the elements such as couplings or collars which are to be connected to them are machined rather than forged.
    Type: Grant
    Filed: July 30, 1998
    Date of Patent: March 18, 2003
    Assignee: American Mine Services
    Inventors: Terry L. Rein, Sr., Terry L. Rein, Jr.
  • Mining drill steels and methods of making the same
    Patent number: 6516904
    Abstract: To eliminate or reduce the possibility of fracture in drill steels used in the roof bolting operations in mines the square or hexagonal surfaces of such drill steels or the elements such as couplings or collars which are to be connected to them are machined rather than forged.
    Type: Grant
    Filed: July 23, 1997
    Date of Patent: February 11, 2003
    Assignee: American Mine Services
    Inventors: Terry L. Rein, Sr., Terry L. Rein, Jr.