Patents by Inventor Lawrence H. McSweeney

Lawrence H. McSweeney 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).

  • Cutting bit insert configured in a polygonal pyramid shape and having a ring mounted in surrounding relationship with the insert
    Patent number: 6196636
    Abstract: A cutting tool configuration includes a cutting bit insert configured in the shape of an octagonal pyramid. The cutting bit insert includes a number of portions, each of which has faces which slope at different angles with respect to the longitudinal axis of the cutting bit insert. The cutting bit insert also includes a flange which is surrounded by a ring. The ring is softer than the cutting bit insert.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: March 6, 2001
    Inventors: Ronald D. Mills, Larry J. McSweeney, Lawrence H. McSweeney
  • Insert for board
    Patent number: 6003617
    Abstract: An insert cooperates with the channel in a material moving board. The insert is adapted to reach at least 3/4 of the way from the front edge to the rear edge of the board. The insert is preferably brazed to the channel and is made primarily of tungsten carbide and a cobalt binder.
    Type: Grant
    Filed: February 9, 1998
    Date of Patent: December 21, 1999
    Assignees: Larry J. McSweeney, Lawrence H. McSweeney
    Inventors: Larry J. McSweeney, Lawrence H. McSweeney, Ronald D. Mills
  • Roof drilling system
    Patent number: 4773490
    Abstract: A roof-drilling system for use in subterranean mining applications and the like in which the drill head of a roof drilling machine is arranged such that the receiving cavity of its chuck is configured having a lost motion association with the drive-in portion of starter and driver drill steel rods. The lower surface of a retainer fixed to the drill head and having a non-circular aperture formed therein serves to define one bearing surface for utilizing the drill head itself to pull the assemblage of drill steel from a completed bore. To remove the drill steel driver component from the drill head chuck, the miner grasps the lowermost portion and rotates it a relatively small amount. To provide for interlocking of various components of the drill steel, i.e.
    Type: Grant
    Filed: July 29, 1987
    Date of Patent: September 27, 1988
    Inventors: Lawrence H. McSweeney, Larry J. McSweeney
  • Roof drilling system
    Patent number: 4702328
    Abstract: A roof-drilling system for use in subterranean mining applications and the like in which the drill head of a roof drilling machine is arranged such that the receiving cavity of its chuck is configured having lost motion association with the drive-in portion of starter and driver drill steel rods. The lower surface of a retainer fixed to the drill head and having a non-circular aperture formed therein serves to define one bearing surface for utilizing the drill head itself to pull the assemblage of drill steel from a completed bore. To remove the drill steel driver component from the drill head chuck, the miner grasps the lowermost portion and rotates it a relatively small amount. To provide for interlocking of various components of the drill steel, i.e.
    Type: Grant
    Filed: November 22, 1985
    Date of Patent: October 27, 1987
    Inventors: Lawrence H. McSweeney, Larry J. McSweeney
  • Roof drilling system
    Patent number: 4226290
    Abstract: A roof-drilling system for use in subterranean mining applications and the like in which the drill head of a roof drilling machine is arranged such that the receiving cavity of its chuck is configured having a lost motion association with the drive-in portion of starter and driver drill steel rods. The lower surface of a retainer fixed to the drill head and having a non-circular aperture formed therein serves to define one bearing surface for utilizing the drill head itself to pull the assemblage of drill steel from a completed bore. To remove the drill steel driver component from the drill head chuck, the miner grasps the lowermost portion and rotates it a relatively small amount, for example about 1/8 turn. To provide for interlocking of the various components of the drill steel, i.e.
    Type: Grant
    Filed: November 6, 1978
    Date of Patent: October 7, 1980
    Inventor: Lawrence H. McSweeney