Patents by Inventor Ivan M. Pleaner

Ivan M. Pleaner 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).

  • Mining method with no delay between shot initiator and firing
    Patent number: 4770097
    Abstract: A method for the electrical sequential initiation of explosions in which a series of detonators (D1-D11) is located in association with a series of explosive charges spaced from one another and in which a shot initiator 12 is used sequentially to initiate firing of the detonators at selected intervals to detonate the explosive charges, characterized in that each detonator is fired without the provision of a delay between the initiation of firing of the detonator at the shot initiator and the actual commencement of firing of the detonator, further characterized in that the interval between the firing of successive detonators is selected from a range of 5 ms to 40 ms.
    Type: Grant
    Filed: July 1, 1987
    Date of Patent: September 13, 1988
    Assignee: General Mining Union Corporation Limited
    Inventors: John W. Wilson, Arthur E. Roffe, Derek O'Beirne, Ratikant Koovarjee, Ivan M. Pleaner, Rolf C. Bohme