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51. 发明授权

US3999947A Reducing gas sensor and a method of producing the same 失效
标题翻译：减少气体传感器及其制造方法
公开(公告)号：US3999947A
公开(公告)日：1976-12-28
申请号：US618680
申请日：1975-10-01
申请人： Toshihiro Mihara , Masatake Ayusawa , Keiji Matsumoto , Kunio Sato , Yoshio Iida
发明人： Toshihiro Mihara , Masatake Ayusawa , Keiji Matsumoto , Kunio Sato , Yoshio Iida
IPC分类号： G01N27/12 , G01N27/00 , G01N33/00
CPC分类号： G01N27/12
摘要： This invention provides a reducing gas sensor which has a gas sensitive element of .gamma.-ferric oxide (.gamma.-Fe.sub.2 O.sub.3), a pair of electrodes and a heater element. The .gamma.-ferric oxide is in the form of a thin film, a plate or a thin surface layer on a sintered plate of .alpha.-ferric oxide. This invention also provides a method of producing the reducing gas sensor, which includes the steps of firing .gamma.-Fe.sub.2 O.sub.3, .gamma.-FeOOH or Fe.sub.3 O.sub.4 powder on a substrate and applying thereto a pair of electrodes and a heater element; or sintering alpha-ferric oxide (.alpha.-Fe.sub.2 O.sub.3) and reducing it to magnetite and oxidizing it at the surface thereof to .gamma.-ferric oxide as a gas sensitive element. The sensitivity (R.sub.A /R.sub.G) of the gas sensitive element of .gamma.-ferric oxide is 10 to 130.degree. at 270.degree. C in an atmosphere containing 0.1 to 1 percent by volume propane gas, and the reducing gas sensor has high sensitivity and stability.
摘要翻译：本发明提供一种还原气体传感器，其具有γ-氧化铁（γ-Fe 2 O 3）气体敏感元件，一对电极和加热元件。 γ-氧化铁是在α氧化铁烧结板上的薄膜，板或薄表面层的形式。本发明还提供一种还原气体传感器的制造方法，其特征在于包括以下步骤：将γ-Fe 2 O 3，γ-FeOOH或Fe 3 O 4粉末烧在基片上，并施加一对电极和加热元件; 或烧结α-氧化铁（α-Fe 2 O 3）并将其还原成磁铁矿并将其在表面氧化成作为气体敏感元件的γ-二氧化铬。在含有0.1〜1体积％丙烷气体的气氛中，γ-氧化铁气敏元件的灵敏度（RA / RG）在270℃为10〜130℃，还原气体传感器具有高灵敏度和稳定性。

52. 发明授权

US3974105A Overtemperature and overcurrent resistor fuse 失效
标题翻译：过热和过流电阻保险丝
公开(公告)号：US3974105A
公开(公告)日：1976-08-10
申请号：US474442
申请日：1974-05-29
申请人： Kunio Sato , Tomio Ishida , Kanji Sugihara
发明人： Kunio Sato , Tomio Ishida , Kanji Sugihara
IPC分类号： H01H37/76 , H01B1/00 , H01B1/22 , H01C7/02 , H01H85/06 , H01B1/02 , H01C1/02
CPC分类号： H01H85/06 , H01B1/00 , H01B1/22 , H01C7/027
摘要： An overtemperature and overcurrent resistor fuse has a resistor body with finely divided conducting powder and silica powder dispersed in an organic flux and resin. The conducting powder has a melting temperature in the range from 60.degree.C to 350.degree. C. This overtemperature and overcurrent resistor fuse has a relatively low electrical resistance below a selected melting temperature and has an irreversible abrupt increase of electrical resistance above the selected melting temperature range caused by serious overload or overheating conditions.
摘要翻译：过温和过流电阻保险丝具有电阻体，其分散有有机助熔剂和树脂，分散有导电粉末和二氧化硅粉末。导电粉末的熔融温度在60℃至350℃的范围内。该过热和过电流电阻器熔丝在选定的熔融温度以下具有相对低的电阻，并且具有高于所选择的熔融温度的电阻的不可逆的突然增加范围由严重过载或过热条件引起。

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