Patents by Inventor Edmund Joseph Osterman

Edmund Joseph Osterman 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).

  • Loading of boreholes with explosives
    Patent number: 3986430
    Abstract: Explosive cartridges are loaded into boreholes at a rapid rate by guided descent through a retractable flexible tubing assembly through which a stream of water flows. The cartridges preferably are cut open just before their discharge from the assembly, and their passage through, or discharge from, the assembly is detected outside the borehole. The assembly is retracted incrementally until completion of the loading. Apparatus comprising a cartridge-guiding assembly through which a stream of water flows, and means associated with the assembly for sensing cartridge passage or discharge.
    Type: Grant
    Filed: March 21, 1975
    Date of Patent: October 19, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: David Linn Coursen, Edmund Joseph Osterman