Patents by Inventor Herman Van Der Walt

Herman Van Der Walt 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).

  • Electronic detonator
    Patent number: 9279645
    Abstract: An electronic detonator (10) which includes a housing (12) which contains an explosive charge (18), an initiating element (20), a control circuit (24), at least one coil (32) having a plurality of windings (30) in a tubular configuration, and a magnet (40) wherein passage of the magnet (40) through the coil (32) creates voltage to which the control circuit (24) is responsive, and a connector (46) for connecting a shock tube (48) to the housing (12).
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: March 8, 2016
    Assignee: DETNET SOUTH AFRICA (PTY) LTD
    Inventors: Craig Charles Schlenter, Herman Van Der Walt
  • Detonator
    Patent number: 9250046
    Abstract: A detonator which includes a tubular body within which is located a detonator assembly which comprise a container (20) which houses a set explosive composition element in which is embedded part of a PCB (72, 76) which carries an ignition element (66).
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: February 2, 2016
    Assignee: DETNET SOUTH AFRICA (PTY) LTD
    Inventors: Christopher Malcolm Birkin, Johannes Petrus Kruger, Herman Van Der Walt
  • Detonator assembly
    Patent number: 8991315
    Abstract: A detonator assembly (10) which includes a housing (16), an explosive (20) in the housing (16), an initiating element (32) exposed to the explosive (20), a circuit for controlling operation of the initiating element (32), and a communication arrangement which can establish communication between the circuit and an external controller (60) at least at one optical frequency.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: March 31, 2015
    Assignee: Detnet South Africa (Pty) Ltd
    Inventors: Andre Koekemoer, Craig Charles Schlenter, Albertus A. Labuschagne, Christopher Malcolm Birkin, Herman Van Der Walt
  • ELECTRONIC DETONATOR
    Publication number: 20150013560
    Abstract: An electronic detonator (10) which includes a housing (12) which contains an explosive charge (18), an initiating element (20), a control circuit (24), at least one coil (32) having a plurality of windings (30) in a tubular configuration, and a magnet (40) wherein passage of the magnet (40) through the coil (32) creates voltage to which the control circuit (24) is responsive, and a connector (46) for connecting a shock tube (48) to the housing (12).
    Type: Application
    Filed: January 9, 2013
    Publication date: January 15, 2015
    Inventors: Craig Charles Schlenter, Herman Van Der Walt
  • DETONATOR
    Publication number: 20140326154
    Abstract: A detonator which includes a tubular body within which is located a detonator assembly which comprise a container (20) which houses a set explosive composition element in which is embedded part of a PCB (72, 76) which carries an ignition element (66).
    Type: Application
    Filed: November 20, 2012
    Publication date: November 6, 2014
    Inventors: Christopher Malcolm Birkin, Johannes Petrus Kruger, Herman Van Der Walt
  • DETONATOR ASSEMBLY
    Publication number: 20140261039
    Abstract: A detonator assembly (10) which includes a housing (16), an explosive (20) in the housing (16), an initiating element (32) exposed to the explosive (20), a circuit for controlling operation of the initiating element (32), and a communication arrangement which can establish communication between the circuit and an external controller (60) at least at one optical frequency.
    Type: Application
    Filed: July 11, 2012
    Publication date: September 18, 2014
    Applicant: DETNET SOUTH AFRICA (PTY) LTD
    Inventors: Andre Koekemoer, Craig Charles Schlenter, Albertus A. Labuschagne, Christopher Malcolm Birkin, Herman Van Der Walt