Patents by Inventor Donald E. McCarthy

Donald E. McCarthy 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).

  • Method apparatus and cartridge for non-explosive rock fragmentation
    Patent number: 5803551
    Abstract: A non-explosive rock breaking method is disclosed. The method is accomplished by first drilling a hole into a rock. A charging system is then positioned adjacent the hole and a propellant cartridge is inserted within the charging system. The propellant cartridge contains a propellant and means for igniting the propellant. Finally, the propellant cartridge is forced through the charging system and into the hole to ignite the propellant. A cartridge and apparatus for performing the method are also disclosed.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: September 8, 1998
    Assignee: First National Corporation
    Inventor: Donald E. McCarthy
  • Method apparatus and cartridge for non-explosive rock fragmentation
    Patent number: 5611605
    Abstract: A non-explosive rock breaking method. The method is accomplished by first drilling a hole into a rock. A charging system is then positioned adjacent the hole and a propellant cartridge is inserted within the charging hosing. The propellant cartridge contains a propellant and means for igniting the propellant. Finally, the propellant cartridge is forced through the charging hose and into the hole to ignite the propellant. A cartridge and apparatus for performing the method are also disclosed.
    Type: Grant
    Filed: September 15, 1995
    Date of Patent: March 18, 1997
    Inventor: Donald E. McCarthy