Patents Assigned to Dyno Nobel Sweden AB
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Patent number: 7370583Abstract: A method for wirelessly transmitting data to a control unit, such as a blasting machine, selected from a plurality of control units from an operating device selected from a plurality of operating devices, and a system intended for the method. The control unit is connected to a plurality of detonators, which are controlled by the control unit via an electrical wire or a fuse. The operating device is associated with the appropriate control unit in a step in which address data and/or encryption data is exchanged between the units. Only one operating device can be associated with a pre-determined control unit at any given moment. The data transmitted in accordance with the method preferably comprises at least a fire command, which instructs the control unit to fire the detonators.Type: GrantFiled: March 6, 2003Date of Patent: May 13, 2008Assignee: Dyno Nobel Sweden ABInventors: Anne-Marie Bokvist, legal representative, Elof Jönsson, Jan Westberg, Sune Hallin
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Publication number: 20070095237Abstract: An electronic detonator system includes a control unit, a plurality of electronic detonators and a bus which connects the detonators to the control unit. Each electronic detonator includes a number of flags which may assume either of two possible values, each flag indicating a substate of the respective detonators. The flags are readable from the control unit by means of digital data packets and the control unit is adapted, by means of these flags, to check the state of the electronic detonator and control the operation of the electronic detonator. When reading the flags, the electronic detonators give responses in the form of analog response pulses on the bus. The detonator system also includes a portable message receiver which on the basis of the flags obtains messages regarding the connecting status of a detonator.Type: ApplicationFiled: December 11, 2006Publication date: May 3, 2007Applicant: DYNO NOBEL SWEDEN ABInventors: Sune Hallin, Anne-Marie Bokvist, Jan Westberg, Elof Jonsson
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Patent number: 7146912Abstract: An electronic detonator system includes a control unit, a plurality of electronic detonators and a bus which connects the detonators to the control unit. Each electronic detonator includes a number of flags which may assume either of two possible values, each flag indicating a substrate of the respective detonators. The flags are readable from the control unit by means of digital data packets and the control unit is adapted, by means of these flags, to check the state of the electronic detonator and control the operation of the electronic detonator. When reading the flags, the electronic detonators give responses in the form of analog response pulses on the bus. The detonator system also includes a portable message receiver which on the basis of the flags obtains messages regarding the connecting status of a detonator.Type: GrantFiled: January 4, 2005Date of Patent: December 12, 2006Assignee: Dyno Nobel Sweden ABInventors: Anne-Marie Bokvist, legal representative, Jan Westberg, Elof Jönsson, Sune Hallin, deceased
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Publication number: 20050183608Abstract: An electronic detonator system includes a control unit, a plurality of electronic detonators and a bus which connects the detonators to the control unit. Each electronic detonator includes a number of flags which may assume either of two possible values, each flag indicating a substrate of the respective detonators. The flags are readable from the control unit by means of digital data packets and the control unit is adapted, by means of these flags, to check the state of the electronic detonator and control the operation of the electronic detonator. When reading the flags, the electronic detonators give responses in the form of analog response pulses on the bus. The detonator system also includes a portable message receiver which on the basis of the flags obtains messages regarding the connecting status of a detonator.Type: ApplicationFiled: January 4, 2005Publication date: August 25, 2005Applicant: DYNO NOBEL SWEDEN ABInventors: Sune Hallin, Anne-Marie Bokvist, Jan Westberg, Elof Jonsson
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Patent number: 6814005Abstract: An electronic detonator which comprises an ignition charge, a battery unit for emitting ignitor current for initiating the ignition charge, and an electronic circuit for controlling said emission of igniter current. The battery unit is movable in the detonator between a resting position and an activated position, in which the battery unit is connected to emit said igniter current. Battery activating means are provided, in response to external activation, for pyrotechnically causing the battery unit to move from the resting position to the activated position.Type: GrantFiled: May 13, 2002Date of Patent: November 9, 2004Assignee: Dyno Nobel Sweden ABInventor: Jan Hans Vestre
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Patent number: 6736068Abstract: The invention relates to an initiating element for use in a detonator to cause a base charge arranged in the detonator, to detonate. The initiating element comprises an ignitable initiating charge which upon ignition generates combustion gases by means of which the base charge is intended to be caused to detonate. The initiating element comprises a compression means which is arranged to be acted upon by said combustion gases to be moved towards the base charge for compression of the same. The invention further relates to a method of igniting a compressed base charge in a detonator, the base charge being further compressed during an initiation phase to increased density. In addition, the invention relates to a detonator provided with a base charge which at a moment of detonation has increased density.Type: GrantFiled: June 13, 2002Date of Patent: May 18, 2004Assignee: Dyno Nobel Sweden ABInventors: Viktor Dumenko, Ulf Borgström, Roger Holmberg
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Patent number: D443331Type: GrantFiled: May 4, 1999Date of Patent: June 5, 2001Assignee: Dyno Nobel Sweden ABInventor: Anneli Lidmar
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Patent number: D424155Type: GrantFiled: May 4, 1999Date of Patent: May 2, 2000Assignee: Dyno Nobel Sweden ABInventor: Anneli Lidmar