Patents by Inventor Llewellyn Dippenaar

Llewellyn Dippenaar 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).

  • Explosives booster
    Patent number: 6186069
    Abstract: An explosives booster (10) intended for igniting a main explosive charge is provided which includes a first explosive charge (15) which is sensitive enough to be ignited by the explosion of a charge from a detonator (13); and a second explosive (16) charge which is less sensitive to ignition that the first charge, (15) but more sensitive to ignition than the main charge. The first charge may comprise a 60/40, and the second charge a 40/60, PETN/TNT pentolite mixture.
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: February 13, 2001
    Assignee: Ensign-Bickford (South Africa Proprietary) Limited
    Inventor: Llewellyn Dippenaar