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특허 상세정보

Liquid desensitized, electrically activated detonator assembly resistant to actuation by radio-frequency and electrostat

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F42B-003/18   
미국특허분류(USC) 102/2026 ; 102/2021 ; 102/2022 ; 102/204
출원번호 US-0353321 (1982-03-01)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 20  인용 특허 : 6

An improved electrically actuated detonator for use in oil well perforation guns is described wherein a hermetically sealed donor explosive propels a plate through a barrel cavity into a vented open space to initiate an acceptor explosive. If the open space fills with liquid the detonator fails to operate. The detonator is also resistant to actuation by radio-frequency and electrostatic energy.


An electrically activated detonator assembly for use in perforation guns which fails to detonate when immersed in liquids which comprises an elongated cylindrical outer sleeve having centrally located therein a hermetically sealed donor explosive initiator means held within a first container to propel a sheared plate in its original planar configuration through said first container longitudinally within the bore of said sleeve to strike an acceptor explosive hermetically sealed within a second container fixed at a point within said sleeve and separated f...

이 특허를 인용한 특허 피인용횟수: 20

  1. Brooks James E. ; Lerche Nolan C. ; Robertson Gerald W. ; Timmons Michael L.. Activation of well tools. USP2000116148263.
  2. Evans John Harold (Landsdale PA). Airbag igniter and method of manufacture. USP1997065639986.
  3. Foster ; Jr. Joseph C. (Ft. Walton Beach FL) Bilek Andrew G. (Valparaiso FL). Auxiliary booster. USP1987124711177.
  4. Liqing Liu CA; Michael Norman Lussier CA. Blasting machine and detonator apparatus. USP2002106470803.
  5. Farrant, Simon L.; Lerche, Nolan C.; Brooks, James E.; Rogers, Edward H.; Timmons, Michael L.; Venersuo, Anthony F.. Communicating with a tool. USP2005096938689.
  6. Wier Franz,DEX. Detonator for a pyrotechnical gas generator and gas generator. USP2001106302023.
  7. Lerche, Nolan C.; Brooks, James E.; Rozek, Kenneth E.. Detonators for use with explosive devices. USP2004066752083.
  8. Lerche, Nolan C.; Merlau, David. Downhole activation system. USP2003086604584.
  9. Lerche Nolan C. ; Merlau David. Downhole activation system that assigns and retrieves identifiers. USP2001096283227.
  10. Caflisch Erwin (Tamins CHX) Bonnevie Jorgen (Falera CHX). Gas generator igniting capsule. USP1997015596163.
  11. Naugler Robert E. ; Anderson Frank E.. Hermetic glass-to-metal seal useful in headers for airbags. USP2001086274252.
  12. Stout Gregg W. (Montgomery TX). High energy firing head for well perforating guns. USP1987044658900.
  13. Hansen David D. ; Woodbury Mark B. ; Chandler Virginia E. ; Monk David B. ; Miller ; II Harry W. ; Pratt Gerold W.. High pressure resistant initiator with integral metal oxide varistor for electro-static discharge protection. USP1999085932832.
  14. Hansen David D. (Clearfield UT). Inflator socket pin collar for integrated circuit initaitor with integral metal oxide varistor for electro-static discha. USP1997045616881.
  15. James E. Brooks ; Nolan C. Lerche. Initiation of explosive devices. USP2002056386108.
  16. Lerche, Nolan C.; Brooks, James E.; Farrant, Simon L.; Rogers, Edward H.. Interactive and/or secure activation of a tool. USP2016109464508.
  17. Naugler Robert E. ; Anderson Frank E.. Process for fabricating a hermetic glass-to-metal seal. USP1998015709724.
  18. Lerche,Nolan C.; Brooks,James E.; Wong,Choon Fei. Secure activation of a downhole device. USP2008037347278.
  19. Riviere, Christophe; Poulard, Eric. Secured high-power electro-pyrotechnic initiator. USP2003016502512.
  20. Nolan C. Lerche ; James E. Brooks. Switches for use in tools. USP2002056385031.