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특허 상세정보

Differential pressure switch for stored gas pressure vessel

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H01H-035/34   
미국특허분류(USC) 200/834 ; 73/717 ; 200/83N ; 340/605
출원번호 US-0852474 (1992-03-17)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 14  인용 특허 : 0
초록

Two electrically conductive diaphragms which are disposed in generally parallel relation and are symmetrical mirror images of each other are joined to a non-conductive ring. The diaphragms are joined in a pressurized atmosphere of argon at, for example, 3000 psi. When so pressurized internally and with lower external pressure, the diaphragms do not contact each other. When pressurized externally to a pressure to a predetermined level higher than the internal pressure, the diaphragms make contact with each other to close an electric circuit. If pressure l...

대표
청구항

A pressure differential switch comprising: first and second diaphragms, each of which has a raised surface and contacting portion, at least, which is electrically conducting, an electrically non-conductive spacer ring having a first side and a second side, and attaching means attaching said first diaphragm and said second diaphragm in sealing relation to said first and second sides, respectively, of said spacer ring thereby forming an hermetically sealed chamber therebetween with said contacting portions thereof in directly opposed relation, wherein said...

이 특허를 인용한 특허 피인용횟수: 14

  1. Lowe Wm. Gregory ; Francis Joseph D.. Device for pressure relief during bonfire and tell-tale of compressed gas. USP1998045738372.
  2. Coggio William D. (Woodbury MN) Schultz William J. (Vadnais Heights MN) Ngo Dennis C. (Woodbury MN) Waid Robert D. (Oakdale MN) Juvin-Pedretti Valerie M. (Nevilly/Seine FRX). Flame retardant thermosettable resin compositions. USP1997065639808.
  3. Coggio William D. (Woodbury MN) Schultz William J. (Vadnais Heights MN) Ngo Dennis C. (Woodbury MN) Waid Robert D. (Oakdale MN) Juvin-Pedretti Valerie M. (Nevilly/Seine FRX). Flame retardant thermosettable resin compositions. USP1997075652285.
  4. Moore Walter A. ; Rink Karl K. ; Beus Glenn S.. Fluid fueled inflator with flow reversal. USP1998075779266.
  5. Rink Karl K. ; Smith Bradley W. ; Green David J. ; Ravenberg Michael J. ; Moore Walter A. ; Pierotti L. John ; Lang Gregory J. ; Miller Harry W.. Fuel containment for fluid fueled airbag inflators. USP1998095803492.
  6. Rink Karl K. ; Moore Walter A. ; Green David J.. Non-pyrotechnic initiator. USP2000086098548.
  7. Frasure, David; Newlin, Scott K.; Wallace, Steven. Pneumatic detector switch having a single diaphragm for alarm and fault conditions. USP2016089418527.
  8. Kurtz Kevin D. ; Ginn Steven N. ; Kordecki David L.. Pressure change warning switch. USP1998105818002.
  9. Marchant Brent R.. Pressure detection method and device. USP1998085792959.
  10. Besling, William Frederick Adrianus; Steeneken, Peter Gerard; Wunnicke, Olaf. Pressure sensor with pressure-actuated switch. USP2015049016133.
  11. Morin Daniel (North Providence RI). Sensor for use with air bag inflator and method for making. USP1996125586386.
  12. Cusack, Jon B.. Snap disc pressure switch. USP2003076596951.
  13. Honeycutt Larry W.. Tap resistant security circuit. USP1999035880535.
  14. Schroeder David D. ; Strong Clark C. ; Clark Marcus T. ; Fleming Marvin F. ; Hersh Samuel. Ultrasonic gas pressure measurement for inflators of vehicular airbag systems. USP1999025869745.