US5719325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas sensor
Assignee: Draegerwerk AG and Co KGaA
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Filing: 1996-12-16
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Granted: 1998-02-17
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Expires: 2016-12-16
Abstract
Abstract A gas sensor has at least a measuring electrode and a counter electrode on an electrolyte layer. This gas sensor is improved with respect to the complete extent of the electrochemical reaction achieved of the gas molecules, which are to be detected, at the measuring electrode by the manner of determining an electrical charge developed or accumulated thereat. To solve this task, the invention provides that the measuring electrode (14) has component electrodes (14a, 14b) which enclose the electrolyte layer (11, 12) in the manner of a sandwich.
Inventors
- 👤 Herbert Kiesele
- 👤 Michael Dietrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:18
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404; G01N27/4045
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
100 words
A gas sensor for measuring a gas, the gas sensor comprising: a measuring electrode permeable to said gas to be measured; said measuring electrode having structure defining first and second individual surfaces which can be subjected to the gas; said individual surfaces being mutually adjacent and defining a space therebetween; counter electrode means; electrolyte means interconnecting said counter electrode and said measuring electrode and at least a portion of said electrolyte means being disposed in said space; said structure being a conductive porous body defining said individual surfaces; and, said electrolyte means including an electrolyte impregnated in said porous body.
Claim 2
Dependent Claim
100 words
A gas sensor for measuring a gas, the gas sensor comprising: a measuring electrode permeable to said gas to be measured; said measuring electrode having structure defining first and second individual surfaces which can be subjected to the gas; said individual surfaces being mutually adjacent and defining a space therebetween; counter electrode means; electrolyte means interconnecting said counter electrode and said measuring electrode and at least a portion of said electrolyte means being disposed in said space; said structure being a conductive porous body defining said individual surfaces; and, said electrolyte means including an electrolyte impregnated in said porous body.
Claim 3
Dependent Claim
13 words
The gas sensor of claim 1, said body being a sinter metal body.
Claim 4
Dependent Claim
24 words
The gas sensor of claim 1, said body being made of a material selected from the group consisting of metal foam and porous carbon.
Claim 5
Dependent Claim
139 words
A gas sensor for measuring a gas, the gas sensor comprising: a measuring electrode permeable to said gas and having first and second gas permeable component measuring electrodes defining respective surfaces which can be subjected to the gas; counter electrode means; said component measuring electrodes being mutually adjacent so as to define a space therebetween; electrolyte means disposed in said space and interconnecting said counter electrode means and said measuring electrode; said component measuring electrodes and said electrolyte means conjointly defining a sandwich-like structure; said measuring electrodes being a first measuring electrode and said space being a first space; a second measuring electrode having first and second ancillary measuring electrodes conjointly defining a second space therebetween; and, said electrolyte means extending into said second space whereby said ancillary measuring electrodes and said electrolyte means also define a sandwich-like structure.
Claim 6
Dependent Claim
139 words
A gas sensor for measuring a gas, the gas sensor comprising: a measuring electrode permeable to said gas and having first and second gas permeable component measuring electrodes defining respective surfaces which can be subjected to the gas; counter electrode means; said component measuring electrodes being mutually adjacent so as to define a space therebetween; electrolyte means disposed in said space and interconnecting said counter electrode means and said measuring electrode; said component measuring electrodes and said electrolyte means conjointly defining a sandwich-like structure; said measuring electrodes being a first measuring electrode and said space being a first space; a second measuring electrode having first and second ancillary measuring electrodes conjointly defining a second space therebetween; and, said electrolyte means extending into said second space whereby said ancillary measuring electrodes and said electrolyte means also define a sandwich-like structure.
Claim 7
Dependent Claim
51 words
The gas sensor of claim 4, said counter electrode means including a counter electrode having first and second component counter electrodes conjointly defining a third space therebetween; and, said electrolyte means also extending into said third space whereby said component counter electrodes and said electrolyte means also define a sandwich-like structure.
Claim 8
Dependent Claim
49 words
The gas sensor of claim 5, further comprising a reference electrode including first and second component reference electrodes conjointly defining a fourth space therebetween; and, said electrolyte means also extending into said fourth space whereby said component reference electrodes and said electrolyte means also conjointly define a sandwich-like structure.
Claim 9
Dependent Claim
44 words
The gas sensor of claim 6, further comprising a membrane permeable to said gas and foil-like enclosing said electrolyte means; and, said component measuring electrodes, said ancillary measuring electrodes, said component counter electrodes and said component reference electrodes all being arranged on said membrane.
Claim 10
Dependent Claim
22 words
The gas sensor of claim 7, said electrolyte means including a nonwoven fabric and a liquid electrolyte impregnated in said nonwoven fabric.
Claim 11
Dependent Claim
16 words
The gas sensor of claim 7, said electrolyte means being configured as a gel electrolyte layer.
Claim 12
Dependent Claim
13 words
The gas sensor of claim 4, said component measuring electrodes being mutually parallel.
Claim 13
Dependent Claim
106 words
A gas sensor for measuring a gas, the gas sensor comprising: a measuring electrode permeable to said gas and having first and second gas permeable component measuring electrodes defining respective surfaces which can be subjected to the gas; said component measuring electrodes being mutually adjacent so as to define a space therebetween; counter electrode means; said counter electrode means having first and second component counter electrodes conjointly defining a space therebetween; electrolyte means disposed in said spaces and interconnecting said component measuring electrodes and said component counter electrodes; and, said component measuring electrodes, said component counter electrodes and said electrolyte means conjointly defining a sandwich-like structure.
Claim 14
Dependent Claim
106 words
A gas sensor for measuring a gas, the gas sensor comprising: a measuring electrode permeable to said gas and having first and second gas permeable component measuring electrodes defining respective surfaces which can be subjected to the gas; said component measuring electrodes being mutually adjacent so as to define a space therebetween; counter electrode means; said counter electrode means having first and second component counter electrodes conjointly defining a space therebetween; electrolyte means disposed in said spaces and interconnecting said component measuring electrodes and said component counter electrodes; and, said component measuring electrodes, said component counter electrodes and said electrolyte means conjointly defining a sandwich-like structure.
Claim 15
Dependent Claim
36 words
The gas sensor of claim 11, further comprising a reference electrode including first and second component reference electrodes conjointly defining a space therebetween; and, said electrolyte means also extending into said space between said reference electrodes.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-02-16 | 2001-08-18 | 2002-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-02-16 | 2005-08-18 | 2006-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-02-16 | 2009-08-18 | 2010-02-17 | $7700.00 | Window Closed / Lapsed |