Differential pressure switch for stored gas pressure vessel
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01H-035/34
출원번호
US-0852474
(1992-03-17)
발명자
/ 주소
Marchant Brent R. (Ogden UT)
출원인 / 주소
Morton International, Inc. (Chicago IL 02)
인용정보
피인용 횟수 :
14인용 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 w
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 leaks into the switch or the external pressure drops, the diaphragms separate and break contact with each other.
대표청구항▼
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 di
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 attaching means include first and second protective rings each of which has an aperture therein in a central portion thereof and has a first side and a second side, said first diaphragm being attached in sealing relationship to said first side of said first protective ring symmetrically with respect to the aperture therein, said second diaphragm being attached in sealing relationship to said second side of said second protective ring symmetrically with respect to the aperture therein, with the first side of said first protective ring being disposed in sealing relationship with the first side of said spacer ring and the second side of said second protective ring being disclosed in sealing relationship with the second side of said spacer ring, whereby with said chamber pressurized to a predetermined reference level, in atmospheric environmental conditions the pressurized chamber has higher than atmospheric pressure, causing the said diaphragms to bow away from each other, thus assuring that the contacting portions thereof do not contact each other, whereby with the pressure of the environment external to said chamber higher by a predetermined amount than said predetermined reference level, said diaphragms are pressed together, thus bringing the contacting portions thereof into contact with each other and establishing electrical conductance therebetween, and whereby, if the seal of said chamber fails, the equalization of pressure between the pressure of the environment external to the chamber and the pressure in the chamber causes the said diaphragms to move the contacting portions thereof out of contact with each other. A pressure differential switch as defined by claim 2 further including a separate electrical lead attached to each of said first and second protective rings.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허를 인용한 특허 (14)
Lowe Wm. Gregory ; Francis Joseph D., Device for pressure relief during bonfire and tell-tale of compressed gas.
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.
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.
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.
Schroeder David D. ; Strong Clark C. ; Clark Marcus T. ; Fleming Marvin F. ; Hersh Samuel, Ultrasonic gas pressure measurement for inflators of vehicular airbag systems.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.