Back to results
US 2003/0116435 A1Published application
Gas sensor
AssigneeDenso Corporation
InventorsMotoaki Satou, Kiyomi Kobayashi, Masanobu Yamauchi, Namitsugu Fujii
Life of this patent
Estimating the term…
Abstract
A powder filler is stuffed in a filler space defined between a housing and a gas sensing element so as to airtightly seal a clearance between the housing and the gas sensing element. The powder filler contains grains whose diameter is in a range from 80 μm to 5,000 μm when measured before being stuffed into the filler space. A weight percentage of the grains having the diameter of 80 μm to 5,000 μm is equal to or larger than 80% with respect to an overall weight of the powder filler.
Claims31
A gas sensor comprising:
- a housing;
- a gas sensing element disposed in said housing;
- and
- a powder filler stuffed in a filler space defined between said housing and said gas sensing element so as to airtightly seal a clearance between said housing and said gas sensing element, wherein said powder filler contains grains whose diameter is in a range from 80 μm to 5,000 μm when measured before being stuffed into said filler space, and a weight percentage of said grains having the diameter of 80 μm to 5,000 μm is equal to or larger than 80% with respect to an overall weight of said powder filler.
1 more element
A gas sensor comprising:
- a housing;
- a gas sensing element disposed in said housing;
- and
- a powder filler stuffed in a filler space defined between said housing and said gas sensing element so as to airtightly seal a clearance between said housing and said gas sensing element, wherein said powder filler contains grains which are subjected to a classification to remove fine grains before said powder filler is stuffed into said filler space.
1 more element
A gas sensor comprising:
- a housing;
- a gas sensing element disposed in said housing;
- and
- a powder filler stuffed in a filler space defined between said housing and said gas sensing element so as to airtightly seal a clearance between said housing and said gas sensing element, wherein said powder filler contains grains which are subjected to a classification to remove coarse grains before said powder filler is stuffed into said filler space.
1 more element
A gas sensor comprising:
- a housing;
- a gas sensing element disposed in said housing;
- and
- a powder filler stuffed in a filler space defined between said housing and said gas sensing element so as to airtightly seal a clearance between said housing and said gas sensing element, wherein a supplementary filler agent is added to said powder filler.
1 more element
A gas sensor comprising:
- a housing;
- a gas sensing element disposed in said housing;
- a powder filler stuffed in a filler space defined between said housing and said gas sensing element so as to airtightly seal a clearance between said housing and said gas sensing element;
- and
- at least one of an uneven surficial layer and an electrode protecting layer provided on a surface of said gas sensing element, wherein a proximal end of said at least one of the uneven surficial layer and the electrode protecting layer is equal to a proximal end of said filler space or offset toward a distal end side of said gas sensor with respect to said proximal end of said filler space.
2 more elements
A gas sensor comprising:
- a housing;
- a gas sensing element disposed in said housing;
- and
- a powder filler stuffed in a filler space defined between said housing and said gas sensing element so as to airtightly seal a clearance between said housing and said gas sensing element, wherein said powder filler contains grains which are subjected to a classification to remove both of fine and coarse grains before said powder filler is stuffed into said filler space.
1 more element
A gas sensor comprising:
- a housing;
- a gas sensing element disposed in said housing;
- and
- a powder filler stuffed in a filler space defined between said housing and said gas sensing element so as to airtightly seal a clearance between said housing and said gas sensing element, wherein a supplementary filler agent is added to said powder filler, said powder filler contains grains whose diameter is in a range from 80 μm to 5,000 μm when measured before being stuffed into said filler space, and a weight percentage of said grains having the diameter of 80 μm to 5,000 μm is equal to or larger than 80% with respect to an overall weight of said powder filler.
1 more element
A gas sensor comprising:
- a housing;
- a gas sensing element disposed in said housing;
- a powder filler stuffed in a filler space defined between said housing and said gas sensing element so as to airtightly seal a clearance between said housing and said gas sensing element, wherein said powder filler contains grains whose diameter is in a range from 80 μm to 5,000 μm when measured before being stuffed into said filler space, and a weight percentage of said grains having the diameter of 80 μm to 5,000 μm is equal to or larger than 80% with respect to an overall weight of said powder filler;
- and
- at least one of an uneven surficial layer and an electrode protecting layer provided on a surface of said gas sensing element, wherein a proximal end of said at least one of the uneven surficial layer and the electrode protecting layer is equal to a proximal end of said filler space or offset toward a distal end side of said gas sensor with respect to said proximal end of said filler space.
2 more elements
A gas sensor comprising:
- a housing;
- a gas sensing element disposed in said housing;
- a powder filler stuffed in a filler space defined between said housing and said gas sensing element so as to airtightly seal a clearance between said housing and said gas sensing element, wherein a supplementary filler agent is added to said powder filler;
- and
- at least one of an uneven surficial layer and an electrode protecting layer provided on a surface of said gas sensing element, wherein a proximal end of said at least one of the uneven surficial layer and the electrode protecting layer is equal to a proximal end of said filler space or offset toward a distal end side of said gas sensor with respect to said proximal end of said filler space.
2 more elements
A gas sensor comprising:
- a housing;
- a gas sensing element disposed in said housing;
- a powder filler stuffed in a filler space defined between said housing and said gas sensing element so as to airtightly seal a clearance between said housing and said gas sensing element, wherein a supplementary filler agent is added to said powder filler, said powder filler contains grains whose diameter is in a range from 80 μm to 5,000 μm when measured before being stuffed into said filler space, and a weight percentage of said grains having the diameter of 80 μm to 5,000 μm is equal to or larger than 80% with respect to an overall weight of said powder filler;
- and
- at least one of an uneven surficial layer and an electrode protecting layer provided on a surface of said gas sensing element, wherein a proximal end of said at least one of the uneven surficial layer and the electrode protecting layer is equal to a proximal end of said filler space or offset toward a distal end side of said gas sensor with respect to said proximal end of said filler space.
2 more elements
A gas sensor comprising:
- a housing;
- a gas sensing element disposed in said housing;
- and
- a powder filler stuffed in a filler space defined between said housing and said gas sensing element so as to airtightly seal a clearance between said housing and said gas sensing element, wherein a supplementary filler agent is added to said powder filler, and said powder filler contains grains which are subjected to a classification to remove both of fine and coarse grains before powder filler is stuffed into said filler space.
1 more element
A gas sensor comprising:
- a housing;
- a gas sensing element disposed in said housing;
- a powder filler stuffed in a filler space defined between said housing and said gas sensing element so as to airtightly seal a clearance between said housing and said gas sensing element, wherein a supplementary filler agent is added to said powder filler, said powder filler contains grains which are subjected to a classification to remove both of fine and coarse grains before said powder filler is stuffed into said filler space;
- and
- at least one of an uneven surficial layer and an electrode protecting layer provided on a surface of said gas sensing element, wherein a proximal end of said at least one of the uneven surficial layer and the electrode protecting layer is equal to a proximal end of said filler space or offset toward a distal end side of said gas sensor with respect to said proximal end of said filler space.
2 more elements
A gas sensor comprising:
- a housing;
- a gas sensing element disposed in said housing;
- a powder filler stuffed in a filler space defined between said housing and said gas sensing element so as to airtightly seal a clearance between said housing and said gas sensing element, wherein said powder filler contains grains which are subjected to a classification to remove both of fine and coarse grains before said powder filler is stuffed into said filler space;
- and
- at least one of an uneven surficial layer and an electrode protecting layer provided on a surface of said gas sensing element, wherein a proximal end of said at least one of the uneven surficial layer and the electrode protecting layer is equal to a proximal end of said filler space or offset toward a distal end side of said gas sensor with respect to said proximal end of said filler space.
2 more elements
Dependencies are inferred from the claim text.