Patents by Inventor Abraham Johannes Liebenberg

Abraham Johannes Liebenberg 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).

  • Wireless detonator assembly
    Patent number: 11874098
    Abstract: A wireless detonator assembly which includes a detonator, a receiver, a printed circuit board with a stored key which is hardwired onto the board during manufacture of the detonator assembly and control logic which allows the detonator to be fired only if the control logic extracts from a signal, received by the receiver, a reference key which is identical to the stored key.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: January 16, 2024
    Assignee: DETNET SOUTH AFRICA (PTY) LTD
    Inventors: Elmar Lennox Muller, Christiaan Tielman Meyer, Abraham Johannes Liebenberg
  • DETONATOR ASSEMBLY
    Publication number: 20230417525
    Abstract: A detonator assembly which includes a detonator arrangement comprising a detonator, a receiver which is responsive to a magnetic signal from a control centre and a control circuit which, in response to a signal from the receiver, regulates firing of the detonator, and which is characterised in that a fibre optic cable is connected to and extends from the detonator arrangement, and in that the detonator arrangement includes a transmitter/receiver module which is in signal communication with the fibre optic cable and the control circuit.
    Type: Application
    Filed: September 28, 2021
    Publication date: December 28, 2023
    Inventors: Elmar Lennox MULLER, Abraham Johannes LIEBENBERG
  • A SAFETY ARRANGEMENT FOR A WIRELESS BLASTING SYSTEM
    Publication number: 20230194230
    Abstract: A safety arrangement for a wireless blasting system which includes a plurality of wireless detonator assemblies located at a blast zone wherein each route which provides access to the blast zone is monitored to detect removal of a wireless detonator assembly which is in an operative mode from the blast zone.
    Type: Application
    Filed: February 2, 2021
    Publication date: June 22, 2023
    Inventors: Elmar Lennox Muller, Tielman Christiaan Meyer, Abraham Johannes Liebenberg
  • WIRELESS DETONATOR ASSEMBLY
    Publication number: 20220357141
    Abstract: A wireless detonator assembly which includes a detonator, a receiver, a printed circuit board with a stored key which is hardwired onto the board during manufacture of the detonator assembly and control logic which allows the detonator to be fired only if the control logic extracts from a signal, received by the receiver, a reference key which is identical to the stored key.
    Type: Application
    Filed: February 2, 2021
    Publication date: November 10, 2022
    Applicant: DETNET SOUTH AFRICA (PTY) LTD
    Inventors: Elmar Lennox Muller, Christiaan Tielman Meyer, Abraham Johannes Liebenberg
  • DETONATOR INFORMATION SYSTEM
    Publication number: 20190049226
    Abstract: A blasting system in which environmental and installation data prevailing at the time a detonator is loaded into a borehole are stored in the detonator and are made available to an operator before the detonator is fired.
    Type: Application
    Filed: May 4, 2016
    Publication date: February 14, 2019
    Inventors: Abraham Johannes Liebenberg, Michiel Jacobus Kruger, Aldaine Whyte
  • DETONATOR CONTROL SYSTEM
    Publication number: 20180120073
    Abstract: A method of locating a borehole and a detonator in a blasting system which includes a number of boreholes and detonators, wherein an operator uses a mobile device which presents to the operator identity and location information of a borehole but only if the borehole is within a predetermined distance of the operator.
    Type: Application
    Filed: May 4, 2016
    Publication date: May 3, 2018
    Inventors: Abraham Johannes Liebenberg, Michiel Jacobus Kruger, Aldaine Whyte
  • Blasting arrangement
    Patent number: 8939082
    Abstract: For use in a blasting system (10), a visible, throw-away, safety lockout device (30) which operates automatically, to interrupt power to the blasting system (10), upon the occurrence of one or more defined fault conditions.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: January 27, 2015
    Assignee: Detnet South Africa (Pty) Ltd
    Inventor: Abraham Johannes Liebenberg
  • BLASTING ARRANGEMENT
    Publication number: 20130180422
    Abstract: For use in a blasting system (10), a visible, throw-away, safety lockout device (30) which operates automatically, to interrupt power to the blasting system (10), upon the occurrence of one or more defined fault conditions.
    Type: Application
    Filed: July 7, 2011
    Publication date: July 18, 2013
    Applicant: DETNET SOUTH AFRICA (PTY) LTD
    Inventor: Abraham Johannes Liebenberg