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Class Information
Number: 102/202.3
Name: Ammunition and explosives > Igniting devices and systems > Accidental fuse ignition prevention means > Fuse device resistive shunt
Description: Subject matter wherein the device includes bare lead wires and a resistive shunt connected between the wires or between a wire and a casing of the device so that the bulk of the current caused by accidental abnormal voltages is diverted through the shunt to prevent the ignition of the device.










Sub-classes under this class:

Class Number Class Name Patents
102/202.4 Voltage responsive variable resistance shunt (e.g., semiconductor shunts) 36


Patents under this class:

Patent Number Title Of Patent Date Issued
8661978 Non-energetics based detonator Mar. 4, 2014
8601948 Spark gap isolated, RF safe, primary explosive detonator for downhole applications Dec. 10, 2013
8327764 Pyroelectronic detonator provided with a circuit for shunting an electrothermal bridge Dec. 11, 2012
7331290 Fuze explosive ordnance disposal (EOD) circuit Feb. 19, 2008
6966261 Fuze explosive ordnance disposal circuit Nov. 22, 2005
6848713 Airbag gas producer Feb. 1, 2005
6739264 Low cost ignition device for gas generators May. 25, 2004
6513436 Ignition module for explosive content detonator, method and equipment for making a detonator equipped with same Feb. 4, 2003
6467414 Ignitor with printed electrostatic discharge spark gap Oct. 22, 2002
6133146 Semiconductor bridge device and method of making the same Oct. 17, 2000
5847309 Radio frequency and electrostatic discharge insensitive electro-explosive devices having non-linear resistances Dec. 8, 1998
H1476 Circuitry for igniting detonators Sep. 5, 1995
5401180 Connector shorting spring Mar. 28, 1995
5355800 Combined EED igniter means and means for protecting the EED from inadvertent extraneous electricity induced firing Oct. 18, 1994
5307742 EMI/RFI/ESD shield for electro-mechanical primer fuses May. 3, 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
5129322 Explosive tubing cutter and method of assembly Jul. 14, 1992
5054395 Plug connection for an electric ignitor Oct. 8, 1991
5048420 Low energy fuse Sep. 17, 1991
5036768 Attenuator for dissipating electromagnetic and electrostatic energy Aug. 6, 1991
RE33202 Energy transmission device Apr. 24, 1990
4776275 Pyrotechnical delay composition Oct. 11, 1988
4756250 Non-electric and non-explosive time delay fuse Jul. 12, 1988
4644863 Electric detonator Feb. 24, 1987
4628818 Short circuit spring for an electrical connector Dec. 16, 1986
4299167 Nonelectric delay initiator Nov. 10, 1981
4290366 Energy transmission device Sep. 22, 1981
4271453 Igniter with coupling structure Jun. 2, 1981
4170939 Ignition device for a passive retention system Oct. 16, 1979
4050382 Electrically detonated explosive device Sep. 27, 1977











 
 
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