[특허]Attenuator for protecting an electroexplosive device from inadvertent RF energy or electrostatic energy induced firing

[미국특허] Attenuator for protecting an electroexplosive device from inadvertent RF energy or electrostatic energy induced firing 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F42B-003/18
출원번호	US-0584045 (1990-09-18)
발명자 / 주소	Dow Robert L. (Rte. 5 Box 415 LaPlata MD 20646) Proctor Paul W. (Rte. 2 Box 60 Kathy Lane White Plains MD 20695)
인용정보	피인용 횟수 : 24 인용 특허 : 0

초록 ▼

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.

대표청구항 ▼

A device for protecting an EED from inadvertent RF energy induced firing comprising: A) an input lead for connecting a bridgewire to a dc power source to pass heating current through said bridgewire; B) a ground element electrically separated from said input lead by a first impedance; and C) an impedance in said input lead between said dc power source and said bridgewire which is greater than said first impedance when exposed to RF energy.

이 특허를 인용한 특허 (24) 인용/피인용 타임라인 분석

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Hansen David D. (Clearfield UT), Inflator socket pin collar for integrated circuit initaitor with integral metal oxide varistor for electro-static discha.
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Cooke, Daniel J.; Von Arx, Jeffrey A., MRI operation modes for implantable medical devices.
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Stubbs, Scott R.; Gilkerson, James O.; Schuster, Diane, Systems and methods for providing arrhythmia therapy in MRI environments.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Attenuator for protecting an electroexplosive device from inadvertent RF energy or electrostatic energy induced firing 원문보기