Patents by Inventor Randall W. Ojanen

Randall W. Ojanen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Rotatable cutting bit
    Patent number: 4743069
    Abstract: A cutter bit includes an elastomeric end cap compressibly held in a base of a bit holder whereby forward movement of the bit in an axial direction is restricted but the bit is free to rotate.
    Type: Grant
    Filed: April 17, 1987
    Date of Patent: May 10, 1988
    Assignee: GTE Products Corporation
    Inventor: Randall W. Ojanen
  • Cylindrical retainer for a cutting bit
    Patent number: 4728153
    Abstract: A cylindrical retainer which retains a cutting bit in a bore of a bit mount of a cutting tool, including a circumferential inner ridge which extends into a corresponding groove in the bit, and a plurality of circumferentially, spaced protuberances which bear against the wall of the bore.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: March 1, 1988
    Assignee: GTE Products Corporation
    Inventors: Randall W. Ojanen, John R. Anderson
  • Rotatable cutting bit
    Patent number: 4547020
    Abstract: A rotatable cutting insert of the type having a shank depending from a head portion and having a hard insert mounted therein, includes an improved insert comprising a heat conducting base section disposed within a cavity in an intermediate section.
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: October 15, 1985
    Assignee: GTE Products Corporation
    Inventor: Randall W. Ojanen
  • Rotatable cutting bit
    Patent number: 4497520
    Abstract: A rotatable cutting insert of the type having a shank depending from a head portion and having a hard insert mounted therein, includes an improved insert having a conically shaped tip section, a base section and an intermediate section with the maximum diameter of the tip section smaller than the diameter of the base section.
    Type: Grant
    Filed: April 29, 1983
    Date of Patent: February 5, 1985
    Assignee: GTE Products Corporation
    Inventor: Randall W. Ojanen
  • Method and apparatus for mine roof drilling
    Patent number: 4339006
    Abstract: A method and apparatus for drilling bolt holes in a mine roof is described. The drill head of a roof bolting drill is provided with a deep chuck adapted to receive the lower male end of a conventional drill steel driver. In a drilling operation, a drill bit is connected to the upper female end of a drill steel driver, with the lower male end of the driver being connected to the deep chuck of the roof bolting drill. The drill bit is rotated and raised enabling it to bore a hole into the mine roof. Drilling continues until the drill steel driver is at least partially disposed within the bolt hole whereupon the driver is disconnected from the deep chuck. The drill is then lowered so that the lower male end of a second identical drill steel driver may be connected to the deep chuck, while the upper female end of the second drill steel driver is connected to the lower male end of the first drill steel driver enabling the drilling to continue.
    Type: Grant
    Filed: May 1, 1981
    Date of Patent: July 13, 1982
    Assignee: General Electric Company
    Inventors: Arnold B. Bower, Jr., Randall W. Ojanen