公开(公告)号：US5279225A

公开(公告)日：1994-01-18

申请号：US584045

申请日：1990-09-18

Applicant: Robert L. Dow ,  Paul W. Proctor

Inventor： Robert L. Dow ,  Paul W. Proctor

IPC: A61N1/37 ,  F42B3/188 ,  F42B3/18

CPC classification number: F42B3/188 ,  A61N1/37

Abstract: A device for preventing an electroexplosive device from inadvertent RF energy or electrostatic energy induced firing, even if that device is exposed to high RF power levels or high RF frequencies or to high electrostatic potentials, includes an impedance element in the firing input line between a source of dc power and a bridgewire which has an impedance that exceeds an impedance between the input leads and ground. When RF energy levels and frequencies exceed certain values, arcing occurs between one input lead and the other or between the input leads and a conductive case to cause energy to flow to the conductive case instead of to the bridgewire. One form of the device includes a Ferrite element in electrical and thermal contact with both of the firing input leads and with the thermally and electrically conductive case. The Ferrite element has a dc resistance in excess of the dc resistance of the bridgewire so short circuiting the firing current does not occur.

Abstract translation: 即使该设备暴露于高RF功率电平或高RF频率或高静电电势，用于防止电气爆炸装置无意中的RF能量或静电能量引发的装置包括在源之间的点火输入线路中的阻抗元件 的直流电源和桥接器，其阻抗超过输入引线和地之间的阻抗。 当射频能量水平和频率超过某些值时，在一个输入引线和另一个输入引线之间或输入引线与导电壳体之间产生电弧，导致能量流向导电外壳而不是桥梁。 该装置的一种形式包括与两个触发输入引线以及导电和导电的壳体电气和热接触的铁氧体元件。 铁氧体元件的直流电阻超过桥梁的直流电阻，因此不会发生触发电流的短路。

公开(公告)号：US5036768A

公开(公告)日：1991-08-06

申请号：US479117

申请日：1990-02-13

Applicant: Robert L. Dow ,  Paul W. Proctor

Inventor： Robert L. Dow ,  Paul W. Proctor

IPC: A61N1/37 ,  F42B3/188

CPC classification number: F42B3/188 ,  A61N1/37

Abstract: An attenuator for dissipating electromagnetic energy and equalizing electrostatic energy is formed of a lossy ferrite material having an electrical resistance in a range of about 3,000 to 50,000 ohms. A conductor passes through the material and thence to a bridgewire to supply a firing charge to heat the bridgewire. In one embodiment of the invention, the attenuator is mounted within an electrically and thermally conductive housing, which will dissipate heat and equalize electromagnetic energy which may be induced in the conductor. A capacitive effect may be imparted by the orientation of the conductor as it passes through the ferrite. The capacitive effect is produced in winding the conductor parallel to the metal housing, and parallel to any other conductor passing through the ferrite. In the preferred form, the conductors are wound through the ferrite in a spiral pattern parallel to the conductor housing.

Abstract translation: 用于耗散电磁能量和均衡静电能量的衰减器由具有大约3,000至50,000欧姆范围内的电阻的有损铁氧体材料形成。 导体通过材料，然后穿过桥梁，以提供点火装置来加热桥梁。 在本发明的一个实施例中，衰减器安装在导电和导热的外壳内，这将消散热量并均衡可能在导体中感应的电磁能。 当导体通过铁氧体时，电容效应可以由导体赋予。 电容效应是在将导体平行于金属外壳缠绕导体并平行于穿过铁氧体的任何其他导体产生的。 在优选的形式中，导体以平行于导体外壳的螺旋图案绕过铁氧体。

公开(公告)号：US4690056A

公开(公告)日：1987-09-01

申请号：US696905

申请日：1985-01-31

Applicant: Uwe Brede ,  Gerhard Kordel

Inventor： Uwe Brede ,  Gerhard Kordel

IPC: F42B3/12 ,  F42B3/188 ,  F42B3/18 ,  F42C19/12

CPC classification number: F42B3/188 ,  F42B3/124

Abstract: An electric detonator device including an insulating carrier member carrying an ignition bridge and first and second electrodes connected to the ignition bridge. At least one of the electrodes is provided in the form of a layered conductor path configured to provide a high-frequency filter so as to prevent high-frequency interference signals from passing to the ignition bridge and causing misfiring.

Abstract translation: 一种电雷管装置，包括承载点火桥的绝缘载体构件和连接到点火桥的第一和第二电极。 电极中的至少一个以分层导体路径的形式提供，其被配置为提供高频滤波器，以防止高频干扰信号通过点火桥并引起失火。

公开(公告)号：US4378738A

公开(公告)日：1983-04-05

申请号：US105467

申请日：1979-12-19

Applicant: Paul W. Proctor ,  Robert L. Dow

Inventor： Paul W. Proctor ,  Robert L. Dow

IPC: F42B3/188 ,  F42C11/00

CPC classification number: F42B3/188

Abstract: A broad band attenuator having a ferrite material for absorption of stray electromagnetic radiation minimizes the unintentional initiation of electroexplosive devices. In one embodiment, each input lead of a detonator passes through a ferrite choke core in contact with the metallic casing that houses the detonator. A printed circuit tape between the input leads and the casing provides electrostatic protection, and heat generated by the ferrite choke core is removed by radiation from the metal casing.

Abstract translation: 具有用于吸收杂散电磁辐射的铁氧体材料的宽带衰减器最大限度地减少了电炸药装置的无意启动。 在一个实施例中，雷管的每个输入引线通过与容纳雷管的金属外壳接触的铁氧体扼流圈。 输入引线和外壳之间的印刷电路胶带提供静电保护，并且通过来自金属外壳的辐射来除去由铁氧体扼流圈产生的热量。

公开(公告)号：US4271453A

公开(公告)日：1981-06-02

申请号：US49463

申请日：1979-06-18

Applicant: Tadashi Yajima ,  Makoto Yagi ,  Masayoshi Katoh ,  Takashi Ishii ,  Haruki Maruizumi ,  Tadahiko Nagaoka

Inventor： Tadashi Yajima ,  Makoto Yagi ,  Masayoshi Katoh ,  Takashi Ishii ,  Haruki Maruizumi ,  Tadahiko Nagaoka

IPC: H01R13/719 ,  F23Q7/02 ,  F42B3/12 ,  F42B3/18 ,  F42B3/188 ,  H01R13/7197 ,  F23Q7/00

CPC classification number: F42B3/188

Abstract: An igniter is disclosed having a heat generator responsive to an ignition signal for igniting powder. comprises a first connector insulatingly supporting a first pair of electrical conductions having their one ends connected across the heat generator, filter means provided in circuit with one of the first electrical conductors for prohibiting passage of any high frequency signal other than the ignition signal, resilient means electrically connecting the first electrical conductors, the resilient means resiliently contacting at least one of the first electrical conductors, a second connector insulatingly supporting a second pair of electrical conductors having their one ends connected across an ignition signal source, and a second connector adapted to engage the first connector so as to bring the second electrical conductors into electrical connection with the respective first electrical conductors and to take the resilient means out of contact with the first electrical conductor.

Abstract translation: 公开了一种具有响应于用于点燃粉末的点火信号的发热体的点火器。 包括绝缘支撑第一对导电的第一连接器，其一端连接在所述发热体上，滤波器装置设置在所述第一电导体之一中，用于禁止通过除所述点火信号之外的任何高频信号，弹性装置 电连接第一电导体，弹性装置弹性地接触第一电导体中的至少一个;第二连接器，绝缘地支撑第二对电导体，其一端连接在点火信号源上，第二连接器适于接合 第一连接器以使第二电导体与相应的第一电导体电连接并且使弹性装置与第一电导体不接触。

公开(公告)号：US3572247A

公开(公告)日：1971-03-23

申请号：US3572247D

申请日：1968-08-29

Applicant: THEODORE WARSHALL

Inventor： WARSHALL THEODORE

IPC: F42B3/188 ,  F42B3/12

CPC classification number: F42B3/188

Abstract: THE PLUG PORTION OF A WIRE-BRIDGE DETONATOR IS REPLACED WITH A FILTER OF THE SAME PHYSICAL SHAPE AND SIZE. THE INPUT CONDUCTORS FOR THE BRIDGE WIRE ARE EACH SURROUNDED BY A SERIES OF CLOSELY SPACED FERRITE BEADS. A CONDUCTIVE SHIELD PLATE IS PROVIDED BETWEEN THE CONDUCTORS FROM WHICH THE FERRITE BEADS ARE INSULATED BY A STRIP OF CERAMIC MATERIAL ON EACH SIDE OF THE SHIELD PLATE. THE PLUG IS PROVIDED WITH END SHIELDS OF CONDUCTING MATEIRAL AND AN OUTER SHIELD CASING WHICH MAY BE OF STEEL OR OTHER CONDUCTING MATERIAL. THE FERRITE BEADS AND THE CERAMIC STRIPS PROVIDE THE INDUCTIVE AND CAPACITIVE ELEMENTS OF AN RF FILTER OR ATTENUATOR ON THE INPUT CONDUCTORS WHICH OPERATES TO ABSORB STRAY RADIATED ELECTROMAGNETIC ENERGY THAT MIGHT BE PICKED UP BY THESE CONDUCTORS, AND PREVENTS THIS ENERGY FROM PASSING THROUGH TO THE BRIDGE WIRE WHICH MIGHT THUS BE PREMATURELY FIRED THEREBY.

公开(公告)号：US3264989A

公开(公告)日：1966-08-09

申请号：US34993664

申请日：1964-03-06

Applicant: DU PONT

Inventor： RUCKER KLAUS G

IPC: F42B3/188

CPC classification number: F42B3/188

公开(公告)号：US11067369B2

公开(公告)日：2021-07-20

申请号：US15195757

申请日：2016-06-28

Applicant: Schlumberger Technology Corporation

Inventor： Kenneth Randall Goodman

IPC: F42B3/18 ,  E21B43/1185 ,  F42B3/14 ,  F42B3/188 ,  F42D1/045 ,  H05K7/00 ,  F42B3/182

Abstract: A radio frequency attenuating switch including a switch having a first input for connection to an electrical power supply and first and second output leads for connecting a device such as a detonator. One or more RF mitigation devices are connected within one or more of the output leads.

公开(公告)号：US5367956A

公开(公告)日：1994-11-29

申请号：US832473

申请日：1992-02-07

Applicant: Homer W. Fogle, Jr.

Inventor： Homer W. Fogle, Jr.

IPC: F42B3/188

CPC classification number: F42B3/188

Abstract: An electromagnetically lossy liquid- or gas-tight fusion seal for use as a low pass radio frequency signal filter constructed as a matrix of glass binder and ferromagnetic and/or ferroelectric filler. Metal cased electrical filters are made by reflowing the material to form fused glass-to-metal seals and incorporating electrical thru-conductors therein which may be formed as inductive windings.

Abstract translation: 一种电磁损耗的液体或气密熔融密封，用于作为玻璃粘结剂和铁磁性和/或铁电填料基体构成的低通射频信号滤波器。 金属套管式电气过滤器是通过回流材料制成熔融的玻璃 - 金属密封件并在其中引入可以形成为感应绕组的电导体导体。

公开(公告)号：US5099762A

公开(公告)日：1992-03-31

申请号：US623286

申请日：1990-12-05

Applicant: Thaddeus R. Drapala

Inventor： Thaddeus R. Drapala

IPC: F42B3/182 ,  F42B3/188

CPC classification number: F42B3/182 ,  F42B3/188

Abstract: An electro-explosive initiator which may be either a coaxial or floating case type, for example, and which is constructed to be immune from the effects of electrostatic discharges. The initiator includes a bridgewire and contact pins for carrying an electric igniting signal to the bridgewire. The initiator has a discrete capacitor connected across the contact pins to shunt out the energy resulting from an electrostatic discharge pulse, and for preventing such energy from reaching the bridgewire.

Abstract translation: 例如可以是同轴或浮动壳型的电爆炸引发剂，其被构造为免于静电放电的影响。 起动器包括用于向桥梁携带电点火信号的桥接器和接触销。 启动器具有连接在接触针上的分立电容器，以分流由静电放电脉冲产生的能量，并用于防止这种能量到达桥接器。