Patents by Inventor Marianna Susanna Nielsen (née Van Rensburg)

Marianna Susanna Nielsen (née Van Rensburg) 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).

  • Publication number: 20180328703
    Abstract: This invention relates to a blast plug (10). The blast plug (10) includes a body (12), a means for suspending the blast plug (10) in a blast hole (50) above an explosive charge (54) and a bag member (16). The body (12) comprises a first end (18), an opposing second end (20) and one or more sides tapering (22) from the first end (18) towards the second end (20). The blast plug (10) suspending means is located at least partially at the second end (20) of the body (12). The bag member (16) is attached to the tapering sides (22) of the body (12) and extends about the body (12) such that the attached portion of the bag member (16) is restricted from moving toward the first end (18) of the body (12) by the tapering sides (22) thereof, wherein the bag member (16) operatively catches and contains tamping material deposited down the blast hole (50).
    Type: Application
    Filed: October 26, 2016
    Publication date: November 15, 2018
    Inventor: Marianna Susanna Nielsen (née Van Rensburg)