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Class Information
Number: 102/202.2
Name: Ammunition and explosives > Igniting devices and systems > Accidental fuse ignition prevention means > Having electromagnetic field effects diminishing or elimination means
Description: Subject matter wherein the device has lead wires connected thereto and means forming part of the device to attenuate or eliminate (a) the effects of electromagnetic radiation on all or part of the device, (b) the passage of unwanted frequencies of alternating currents or voltages through the lead wires or the device, (c) the passage of unwanted current or voltage through the lead wires or the device.










Patents under this class:
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Patent Number Title Of Patent Date Issued
5433147 Ignition device Jul. 18, 1995
5423261 Pyrotechnic trigger Jun. 13, 1995
5401180 Connector shorting spring Mar. 28, 1995
5385097 Electroexplosive device Jan. 31, 1995
5370054 Semiconductor slapper Dec. 6, 1994
5367956 Hermetically-sealed electrically-absorptive low-pass radio frequency filters and electro-magnetically lossy ceramic materials for said filters Nov. 29, 1994
5355800 Combined EED igniter means and means for protecting the EED from inadvertent extraneous electricity induced firing Oct. 18, 1994
5345872 Igniter Sep. 13, 1994
5307742 EMI/RFI/ESD shield for electro-mechanical primer fuses May. 3, 1994
5291829 Radio frequency attenuating connector Mar. 8, 1994
5279225 Attenuator for protecting an electroexplosive device from inadvertent RF energy or electrostatic energy induced firing Jan. 18, 1994
5243911 Attenuator for protecting electronic equipment from undesired exposure to RF energy and/or lightning Sep. 14, 1993
5241910 Universal squib connector for a gas generator Sep. 7, 1993
5200574 Universal squib connector Apr. 6, 1993
5153368 Filtered electrical connection assembly using potted ferrite element Oct. 6, 1992
5133257 Ignition system and a method for the initiation thereof Jul. 28, 1992
5099762 Electrostatic discharge immune electric initiator Mar. 31, 1992
5088411 Apparatus for igniting detonating primer with the aid of electromagnetic wave Feb. 18, 1992
5054395 Plug connection for an electric ignitor Oct. 8, 1991
5036768 Attenuator for dissipating electromagnetic and electrostatic energy Aug. 6, 1991
4967665 RF and DC desensitized electroexplosive device Nov. 6, 1990
4944224 Electrical igniting medium Jul. 31, 1990
4893563 Monolithic RF/EMI desensitized electroexplosive device Jan. 16, 1990
4881463 Electric igniter assembly Nov. 21, 1989
4848233 Means for protecting electroexplosive devices which are subject to a wide variety of radio frequency Jul. 18, 1989
4779532 Integrated filtered and shielded ignition assembly Oct. 25, 1988
4771692 Electric igniter assembly Sep. 20, 1988
4754703 Method of electrically blasting detonator and cordless detonator for use in said method Jul. 5, 1988
4745858 Electric detonator with static electricity suppression May. 24, 1988
4690056 Electric detonator device Sep. 1, 1987
4685395 Controlled inductive coupling device Aug. 11, 1987
4628818 Short circuit spring for an electrical connector Dec. 16, 1986
4592280 Filter/shield for electro-explosive devices Jun. 3, 1986
4567828 Bomb safety device Feb. 4, 1986
4519314 Borehole charging method including toroidal transformer cores May. 28, 1985
4517895 Electric initiator resistant to actuation by radio frequency and electrostatic energies May. 21, 1985
4441427 Liquid desensitized, electrically activated detonator assembly resistant to actuation by radio-frequency and electrostatic energies Apr. 10, 1984
4422381 Igniter with static discharge element and ferrite sleeve Dec. 27, 1983
4380958 Electrostatic safe electric match Apr. 26, 1983
4378738 Electromagnetic and electrostatic insensitive blasting caps, squibs and detonators Apr. 5, 1983
4369707 Short circuit fuse for electrical igniters Jan. 25, 1983
4335654 Electric igniter Jun. 22, 1982
4304184 Selectively actuable electrical circuit Dec. 8, 1981
4273051 Electric device Jun. 16, 1981
4271453 Igniter with coupling structure Jun. 2, 1981
4145968 Device for the contactless transmission of electrical energy, in particular for pyrotechnic ignitors or firing devices Mar. 27, 1979
4041865 Method and apparatus for detonating explosives Aug. 16, 1977
4040356 Converging wave detonator Aug. 9, 1977
4011115 Explosive compositions with thermally conductive ingredient Mar. 8, 1977

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