Title: Gas detecting element

Abstract: A gas detecting element comprising a hollow cylindrical insulative body, a pair of electrodes provided on the outer periphery of the insulative body, a gas detecting body covering up the outer periphery of the insulative body and the electrodes, a catalyst layer made of a catalytic material and coated on said gas detecting body, thereby covering up the surface of said gas detecting body, and a heater disposed in the hollow of the insulative body. When the gas detecting element comes into contact with a gas, the surface resistance of the gas detecting body varies, thereby detecting the gas.

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Inventors: Ichinose, Noboru (Yohohama, JP)
Okuma, Hideo (Kawasaki, JP)
Yokomizo, Yuji (Tokyo, JP)
Takahashi, Takashi (Tokyo, JP)
Nishihara, Mieko (Kawasaki, JP)
Katsura, Masaki (Mitaka, JP)

Application Number: 873923
Filing Date: 1978-01-31
Publication_date: 1981-03-31
Assignee: Tokyo Shibaura Electric Co., Ltd. (Kawasaki, JP)
Primary Class(es): 422/98 324/71.5, 338/34
Other Classes:
US Patent Ref:

3092799	Jun, 1963	Baker	73/254.
3507145	Apr, 1970	Loh	73/23.
3631436	Dec, 1971	Taguchi	23/254.
3952567	Apr, 1976	Shinagawa et al.	23/254.
3959764	May, 1976	Allman	73/254.
3961248	Jun, 1976	Kawamura	23/254.
3999947	Dec, 1976	Mihara et al.	338/34.
4015230	Mar, 1977	Nitta et al.	73/254.
4036592	Jul, 1977	Brown et al.	422/96.
4045177	Aug, 1977	McNally	23/254.
4045178	Aug, 1977	Okinaka et al.	23/254.
4099922	Dec, 1976	Yasada	422/95.

Other Refs: 51-84291

Feb, 1976	JP

Primary Examiner: Marcus, Michael S.
Assistant Examiner:
Attorney: Oblon, Fisher, Spivak, McClelland & Maier