JPS5712172A - Automatic gas shut-off device - Google Patents
Automatic gas shut-off deviceInfo
- 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
Links
Landscapes
- 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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4883413A (en) * | 1972-02-08 | 1973-11-07 |
-
1980
- 1980-06-27 JP JP8664880A patent/JPS5712172A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4883413A (en) * | 1972-02-08 | 1973-11-07 |
Cited By (9)
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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