Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2004-12-22
2008-07-29
Goins, Davetta W. (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S622000, C340S584000, C073S061760, C702S136000
Reexamination Certificate
active
07405667
ABSTRACT:
A technique for quickly determining the type of liquid in a container externally regardless of the material of the container, preferably contactlessly. A halogen heater102and an infrared thermopile103are disposed outside an electrically conductive container101made of aluminum, for example. The surface temperature of the container101is measured when the halogen heater102is off, followed by the turning-on of the halogen heater102for two seconds, for example. The surface temperature of the container101is then measured, and a difference from the previous result of measurement is calculated. If the difference is smaller than a threshold value, the liquid in the container is determined to be a safe liquid consisting primarily of water, and a blue lamp is activated. If the difference is greater than the threshold value, the liquid in the container cannot be determined to be a safe liquid consisting primarily of water, and a red lamp is activated, indicating abnormality.
REFERENCES:
patent: 10-325815 (1998-12-01), None
patent: 11-51953 (1999-02-01), None
patent: 2000-186815 (2000-07-01), None
patent: 2002-214020 (2002-07-01), None
patent: 2002-277416 (2002-09-01), None
patent: WO 00/65343 (2000-11-01), None
International Search Report mailed Apr. 19, 2005 of International Application PCT/JP2004/019245.
Translation of International Preliminary Report on Patentability mailed Aug. 31, 2006.
Abe Takeshi
Machida Tomohide
Miyagi Yoshinobu
Shinozawa Yasuhiko
Yamada Kouichiro
Fan Hongmin
Goins Davetta W.
Tokyo Gas Co., Ltd
Westerman, Hattori, Daniels & Adrian , LLP.
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