Gas sensor having improved structure for minimizing thermal...

Details Gas sensor having improved structure for minimizing thermal... Gas sensor having improved structure for minimizing thermal...

2008-01-15

2008-01-15

Olsen, Kaj K. (Department: 1753)

Chemistry: electrical and wave energy

Apparatus

Electrolytic

C204S424000, C204S427000

Reexamination Certificate

active

07318886

ABSTRACT:
An improved structure of a gas sensor is provided which is designed to minimize thermal damage to a water-repellent filter installed in a base end portion of the gas sensor. The gas sensor has an elastic seal installed in an opening of the base end portion of the gas sensor and an air cover assembly made up of a main cover and a filter cover. The filter cover is crimped to form at least two necks which establish joints of the filter cover to the main cover through the water-repellent filter. At least one of the necks is used to retain the elastic seal within the main cover. This structure locates the water-repellent filter farther away from the top of the gas sensor exposed to intense heat, thereby minimizing the thermal deformation or deterioration of the water-repellent filter.

REFERENCES:
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patent: 5037526 (1991-08-01), Kato et al.
patent: 6178806 (2001-01-01), Watanabe et al.
patent: 6395159 (2002-05-01), Matsuo et al.
patent: 6463788 (2002-10-01), Nakano et al.
patent: 0918215 (1999-05-01), None
patent: 0899562 (2001-09-01), None
patent: 1167960 (2002-01-01), None
patent: 11-72464 (1999-03-01), None
French Search Report, date not available.

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