Patents by Inventor Craig Charles Schlenter

Craig Charles Schlenter 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).

  • Detonator
    Patent number: 10890426
    Abstract: A detonator for use in a detonating system, which detonator includes discriminating and validating arrangements which sense and validate at least one characteristic of at least one parameter produced by at least one of a light, acoustic, vibratory, magnetic or electrical signal event, and an electronic timer which executes a timing interval in response thereto.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: January 12, 2021
    Assignee: DETNET SOUTH AFRICA (PTY) LTD
    Inventors: Albertus Abraham Labuschagne, Andre Louis Koekemoer, Christopher Malcolm Birkin, Craig Charles Schlenter, Elmar Lennox Muller
  • Detonator
    Patent number: 10527395
    Abstract: A detonator for use in a detonating system, which detonator includes discriminating and validating arrangements which sense and validate at least one characteristic of at least one parameter produced by at least one of a light, acoustic, vibratory, magnetic or electrical signal event, and an electronic timer which executes a timing interval in response thereto.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: January 7, 2020
    Assignee: DETNET SOUTH AFRICA (PTY) LTD
    Inventors: Albertus Abraham Labuschagne, Andre Louis Koekemoer, Christopher Malcolm Birkin, Craig Charles Schlenter, Elmar Lennox Muller
  • DETONATOR
    Publication number: 20190195605
    Abstract: A detonator for use in a detonating system, which detonator includes discriminating and validating arrangements which sense and validate at least one characteristic of at least one parameter produced by at least one of a light, acoustic, vibratory, magnetic or electrical signal event, and an electronic timer which executes a timing interval in response thereto.
    Type: Application
    Filed: February 27, 2019
    Publication date: June 27, 2019
    Inventors: Albertus Abraham Labuschagne, Andre Louis Koekemoer, Christopher Malcolm Birkin, Craig Charles Schlenter, Elmar Lennox Muller
  • Electronic detonator leakage current restriction
    Patent number: 10267613
    Abstract: A detonator system wherein a detonator is connected via a down-hole harness to a bus extending from a blast controller and wherein a component is connected in series with the down-hole harness to limit leakage current in the harness to a level which can be accommodated by the blast controller.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: April 23, 2019
    Assignee: Detnet South Africa (Pty) Limited
    Inventor: Craig Charles Schlenter
  • Selective control of groups of detonators
    Patent number: 9967095
    Abstract: A method of communicating with a detonator assembly wherein an encryption key associated with the detonator assembly is stored in the detonator assembly and a message, intended for the detonator assembly, is encrypted at the control location using the encryption key whereupon the encrypted message is transmitted to each of a plurality of detonator assemblies and each received message is decrypted and validated.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: May 8, 2018
    Assignee: DETNET SOUTH AFRICA (PTY) LTD
    Inventors: Craig Charles Schlenter, Jonathan Gounden
  • DETONATOR
    Publication number: 20170322005
    Abstract: A detonator for use in a detonating system, which detonator includes discriminating and validating arrangements which sense and validate at least one characteristic of at least one parameter produced by at least one of a light, acoustic, vibratory, magnetic or electrical signal event, and an electronic timer which executes a timing interval in response thereto.
    Type: Application
    Filed: February 24, 2017
    Publication date: November 9, 2017
    Inventors: Albertus Abraham Labuschagne, Andre Louis Koekemoer, Christopher Malcolm Birkin, Craig Charles Schlenter, Elmar Lennox Muller
  • ELECTRONIC DETONATOR LEAKAGE CURRENT RESTRICTION
    Publication number: 20170276466
    Abstract: A detonator system wherein a detonator is connected via a down-hole harness to a bus extending from a blast controller and wherein a component is connected in series with the down-hole harness to limit leakage current in the harness to a level which can be accommodated by the blast controller.
    Type: Application
    Filed: September 1, 2015
    Publication date: September 28, 2017
    Inventor: Craig Charles Schlenter
  • Two wire daisy chain
    Patent number: 9671206
    Abstract: A detonator which, in response to a command, uses a first modulation process to generate a first signal and, in response to an event, uses a second modulation process to generate a second signal.
    Type: Grant
    Filed: October 12, 2015
    Date of Patent: June 6, 2017
    Assignee: DETNET SOUTH AFRICA (PTY) LTD
    Inventor: Craig Charles Schlenter
  • Detonator including a sensing arrangement
    Patent number: 9625244
    Abstract: A timing module for use in a detonating system which includes discriminating and validating arrangements which sense and validate at least one characteristic of at least one parameter produced by at least one shock tube event and an electronic timer which executes a timing interval in response thereto.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: April 18, 2017
    Assignee: DETNET SOUTH AFRICA (PTY) LTD.
    Inventors: David Bruce Harding, Albertus Abraham Labuschagne, Andre Louis Koekemoer, Christopher Malcolm Birkin, Craig Charles Schlenter
  • SELECTIVE CONTROL OF GROUPS OF DETONATORS
    Publication number: 20160218863
    Abstract: A method of communicating with a detonator assembly wherein an encryption key associated with the detonator assembly is stored in the detonator assembly and a message, intended for the detonator assembly, is encrypted at the control location using the encryption key whereupon the encrypted message is transmitted to each of a plurality of detonator assemblies and each received message is decrypted and validated.
    Type: Application
    Filed: August 26, 2014
    Publication date: July 28, 2016
    Applicant: Detnet South Africa (Pty) Ltd
    Inventors: Craig Charles Schlenter, Jonathan Gounden
  • WEARABLE BLASTING SYSTEM APPARATUS
    Publication number: 20160209195
    Abstract: An apparatus for use with a detonator system which includes a user-wearable augmented display, a sensor system for sensing parameters related to the detonator system, a processor and a user-responsive interface, wherein the sensor system or the user-responsive interface outputs a sensor signal or a user signal, respectively, in response to which the processor generates an augmented image which is discernible to the user.
    Type: Application
    Filed: August 20, 2014
    Publication date: July 21, 2016
    Inventors: Michiel Jacobus KRUGER, Craig Charles SCHLENTER
  • Detonator roll call
    Patent number: 9377280
    Abstract: A detonator roll call method wherein each detonator is assigned a unique identifier and, at each detonator, in response to an enquiry signal to all the detonators a count is incremented and compared to the roll call identifier and, if the comparison is positive, a reply is sent by the detonator.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: June 28, 2016
    Assignee: DETNET SOUTH AFRICA (PTY) LIMITED
    Inventor: Craig Charles Schlenter
  • 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
  • TWO WIRE DAISY CHAIN
    Publication number: 20160033247
    Abstract: A detonator which, in response to a command, uses a first modulation process to generate a first signal and, in response to an event, uses a second modulation process to generate a second signal.
    Type: Application
    Filed: October 12, 2015
    Publication date: February 4, 2016
    Inventor: Craig Charles Schlenter
  • Two wire daisy chain
    Patent number: 9157719
    Abstract: A detonator (20) which, in response to a command, uses a first modulation process (46) to generate a first signal (36a) and, in response to an event, uses a second modulation (48) process to generate a second signal (36b).
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: October 13, 2015
    Assignee: DETNET SOUTH AFRICA (PTY) LTD
    Inventor: Craig Charles Schlenter
  • Detonator device communication
    Patent number: 9127921
    Abstract: A method of communicating with a detonator device using radio frequency identification (RFID) technology to read data from the device, and to transmit information and commands to the device.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: September 8, 2015
    Assignee: DETNET SOUTH AFRICA (PTY) LTD
    Inventors: Andre Koekemoer, Craig Charles Schlenter, Daniel August Julien Louis Maurissens
  • DETONATOR ROLL CALL
    Publication number: 20150159986
    Abstract: A detonator roll call method wherein each detonator is assigned a unique identifier and, at each detonator, in response to an enquiry signal to all the detonators a count is incremented and compared to the roll call identifier and, if the comparison is positive, a reply is sent by the detonator.
    Type: Application
    Filed: July 1, 2013
    Publication date: June 11, 2015
    Applicant: DETNET SOUTH AFRICA (PTY) LIMITED
    Inventor: Craig Charles Schlenter
  • DETONATOR INCLUDING A SENSING ARRANGEMENT
    Publication number: 20150090144
    Abstract: A timing module for use in a detonating system which includes discriminating and validating arrangements which sense and validate at least one characteristic of at least one parameter produced by at least one shock tube event and an electronic timer which executes a timing interval in response thereto.
    Type: Application
    Filed: December 9, 2014
    Publication date: April 2, 2015
    Inventors: David Bruce Harding, Albertus Abraham Labuschagne, Andre Louis Koekemoer, Christopher Malcolm Birkin, Craig Charles Schlenter
  • 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
  • Timing module
    Patent number: 8967048
    Abstract: A timing module for use in a detonating system which includes discriminating and validating arrangements which sense and validate at least one characteristic of at least one parameter produced by at least one shock tube event and an electronic timer which executes a timing interval in response thereto.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: March 3, 2015
    Assignee: Detnet South Africa (Pty) Ltd.
    Inventors: David Bruce Harding, Albertus Abraham Labuschagne, Andre Louis Koekemoer, Christopher Malcolm Birkin, Craig Charles Schlenter