JPS5712172A - Automatic gas shut-off device - Google Patents

Automatic gas shut-off device

Info

Publication number
JPS5712172A
JPS5712172A JP8664880A JP8664880A JPS5712172A JP S5712172 A JPS5712172 A JP S5712172A JP 8664880 A JP8664880 A JP 8664880A JP 8664880 A JP8664880 A JP 8664880A JP S5712172 A JPS5712172 A JP S5712172A
Authority
JP
Japan
Prior art keywords
valve
gas
opening
metal rod
shut
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8664880A
Other languages
Japanese (ja)
Inventor
Shiro Yagi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP8664880A priority Critical patent/JPS5712172A/en
Publication of JPS5712172A publication Critical patent/JPS5712172A/en
Pending legal-status Critical Current

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  • Safety Valves (AREA)

Abstract

PURPOSE: To prevent malfunction of an automatic gas shutoff device caused by adhesion owing to secular change by accomodating the valve, the moving part of the device, in the valve chest isolated from the atmosphere.
CONSTITUTION: When sensing any oscillation owing to earthquake etc., a valve 8 falls down against the magnetic force of a metal rod 9 to choke the opening 7 of valve and shut off the gas. At this time, the pressure of the gas flowing into the valve chest 4 through a nozzle 6 is applied to the upper part of valve 8, which is thereby pressed strongly to the edge of opening 7 of the valve to shut off the gas. For resetting the valve 8, a permanent magnet 13 is sunk against the pushing force of a spring 14, that will magnetize the lowermost part of metal rod 9 and the valve 8. Thus the valve 8 is attracted upward and hung at the lowermost part of metal rod 9 to open the opening 7 of valve.
COPYRIGHT: (C)1982,JPO&Japio
JP8664880A 1980-06-27 1980-06-27 Automatic gas shut-off device Pending JPS5712172A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8664880A JPS5712172A (en) 1980-06-27 1980-06-27 Automatic gas shut-off device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8664880A JPS5712172A (en) 1980-06-27 1980-06-27 Automatic gas shut-off device

Publications (1)

Publication Number Publication Date
JPS5712172A true JPS5712172A (en) 1982-01-22

Family

ID=13892846

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8664880A Pending JPS5712172A (en) 1980-06-27 1980-06-27 Automatic gas shut-off device

Country Status (1)

Country Link
JP (1) JPS5712172A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4785842A (en) * 1987-08-07 1988-11-22 Johnson Jr Ayres W Resettable vibration-actuated emergency shutoff mechanism
US5052429A (en) * 1989-11-13 1991-10-01 Keun Young Yoo Gas breaker, automatic gas shut-off valve
US5409031A (en) * 1991-10-24 1995-04-25 Mcgill; James C. Safety shut off valve
US5704385A (en) * 1991-10-24 1998-01-06 Seismic Safety Products, Inc. Automatic and manually operable safety shutoff valve
US6085772A (en) * 1996-11-05 2000-07-11 Mcgill; James C. Smart automatic safety valve having remote electromagnetic shut-off protection and reset control from seismic or other sensors
US6705340B1 (en) 1997-02-21 2004-03-16 Mcgill James C. Emergency gas and electricity shutoff apparatus and control system
US7458387B2 (en) 1997-02-21 2008-12-02 Mcgill James C Emergency gas and electricity shutoff apparatus and control system
US7814924B2 (en) 2003-11-20 2010-10-19 Mcgill James C Seismic safety valve and valve actuator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4883413A (en) * 1972-02-08 1973-11-07

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4883413A (en) * 1972-02-08 1973-11-07

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4785842A (en) * 1987-08-07 1988-11-22 Johnson Jr Ayres W Resettable vibration-actuated emergency shutoff mechanism
US5052429A (en) * 1989-11-13 1991-10-01 Keun Young Yoo Gas breaker, automatic gas shut-off valve
US5409031A (en) * 1991-10-24 1995-04-25 Mcgill; James C. Safety shut off valve
US5704385A (en) * 1991-10-24 1998-01-06 Seismic Safety Products, Inc. Automatic and manually operable safety shutoff valve
US6085772A (en) * 1996-11-05 2000-07-11 Mcgill; James C. Smart automatic safety valve having remote electromagnetic shut-off protection and reset control from seismic or other sensors
US6705340B1 (en) 1997-02-21 2004-03-16 Mcgill James C. Emergency gas and electricity shutoff apparatus and control system
US7458387B2 (en) 1997-02-21 2008-12-02 Mcgill James C Emergency gas and electricity shutoff apparatus and control system
US6938637B2 (en) 1997-11-05 2005-09-06 Mcgill James C. Emergency gas and electricity shutoff apparatus and control system
US7814924B2 (en) 2003-11-20 2010-10-19 Mcgill James C Seismic safety valve and valve actuator

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