Gas shutoff apparatus
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United States of America Patent
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Nov 21, 1989
Grant Date -
N/A
app pub date -
Mar 16, 1989
filing date -
Mar 17, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A gas flow rate is measured and therefrom 'consumption state' defined by combination of maximum flow rate, increase of total amount and a consumption time of the gas is detected, and then, the consumption state is compared with a 'reference consumption condition' representing a predetermined consumption state; and when the 'consumption state' exceeds the 'reference consumption condition', a gas control means interrupt supply of the gas; and thereafter, after restoration of the gas control means to gas supply state, the actual gas consumption state is measured for a predetermined time counted by timer when the gas flow rate exceeds a predetermined level.
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