US5062292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for measuring gas dissolved in oil
Assignee: Nissin Electric Co Ltd
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Filing: 1990-05-08
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Granted: 1991-11-05
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Expires: 2010-05-08
Abstract
Abstract A device for measuring a gas dissolved in an oil comprising a sample container for containing a sample oil, an air bubble generator for extracting the gas dissolved in the oil, a gas container for containing the gas, a gas sensor for detecting the gas charged in the gas container, gas measuring means for measuring a concentration of the gas in response to a signal dispatched from the gas sensor, and a pump for supplying air to the air bubble generator.
Inventors
- 👤 Masaru Kanba
- 👤 Yasuo Inoue
- 👤 Sadayoshi Mukai
- 👤 Masanari Kikkawa
- 👤 Yasunori Suga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:26
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; B; B01; B01L; B01L5/00; B01L5/02; G01N33/00; G01N33/26; G01N33/28; G01N33/2835; G01N33/2841
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
149 words
A device for measuring a gas dissolved in an oil sample, comprising: a sample container for containing an oil sample; an air bubble discharging means, provided in said sample container, for extracting a measurement gas dissolved in said oil sample; a gas container for containing said measurement gas extracted by said air bubble discharging means; gas detecting means for detecting said measurement gas charged in said gas container; measuring means for measuring a concentration of said measurement gas in response to a signal dispatched from said gas detecting means; pumping means for supplying air to said air bubble discharging means; and filter means for purifying the air before being fed into said air bubble dischrging means; said air bubble discharging means comprising a mesh filter having a mesh of 0.5 to 10 μm square for discharging bubbles therefrom and air leading means for leading air to said discharging means.
Claim 2
Independent Claim
149 words
A device for measuring a gas dissolved in an oil sample, comprising: a sample container for containing an oil sample; an air bubble discharging means, provided in said sample container, for extracting a measurement gas dissolved in said oil sample; a gas container for containing said measurement gas extracted by said air bubble discharging means; gas detecting means for detecting said measurement gas charged in said gas container; measuring means for measuring a concentration of said measurement gas in response to a signal dispatched from said gas detecting means; pumping means for supplying air to said air bubble discharging means; and filter means for purifying the air before being fed into said air bubble dischrging means; said air bubble discharging means comprising a mesh filter having a mesh of 0.5 to 10 μm square for discharging bubbles therefrom and air leading means for leading air to said discharging means.
Claim 3
Dependent Claim
51 words
A device as claimed in claim 1, wherein said sample container comprises a housing for containing the sample oil and at least said discharging means of said air bubble discharging means, said housing having at least one opening for passing a bubble air and a gas dissolved in said sample oil.
Claim 4
Independent Claim
158 words
A device for measuring a gas dissolved in an oil sample, comprising: a sample container for containing an oil sample; an air bubble discharging means, provided in said sample container, for extracting a measurement gas dissolved in said oil sample; a gas container for containing said measurement gas extracted by said air bubble discharging means; gas detecting means for detecting said measurement gas charged in said gas container; measuring means for measuring a concentration of said measurement gas in response to a signal dispatched from said gas detecting means; pumping means for supplying air to said air bubble discharging means; and filter means for purifying the air before being fed into said air bubble dischrging means; said air bubble discharging means comprising a mesh filter having a mesh of 0.5 to 10 μm square for discharging bubbles therefrom and air leading means for leading air to said discharging means; wherein said sample container is in a spiral form.
Claim 5
Independent Claim
158 words
A device for measuring a gas dissolved in an oil sample, comprising: a sample container for containing an oil sample; an air bubble discharging means, provided in said sample container, for extracting a measurement gas dissolved in said oil sample; a gas container for containing said measurement gas extracted by said air bubble discharging means; gas detecting means for detecting said measurement gas charged in said gas container; measuring means for measuring a concentration of said measurement gas in response to a signal dispatched from said gas detecting means; pumping means for supplying air to said air bubble discharging means; and filter means for purifying the air before being fed into said air bubble dischrging means; said air bubble discharging means comprising a mesh filter having a mesh of 0.5 to 10 μm square for discharging bubbles therefrom and air leading means for leading air to said discharging means; wherein said sample container is in a spiral form.
Claim 6
Dependent Claim
23 words
A device as claimed in claim 3, wherein said air leading means is contained in said housing and is in the spiral form.
Claim 7
Independent Claim
203 words
A device for measuring a gas dissolved in an oil sample, comprising: a sample container for containing an oil sample; an air bubble discharging means, provided in said sample container, for extracting a measurement gas dissolved in said oil sample; a gas container for containing said measurement gas extracted by said air bubble discharging means; gas detecting means for detecting said measurement gas charged in said gas container; measuring means for measuring a concentration of said measurement gas in response to a signal dispatched from said gas detecting means; pumping means for supplying air to said air bubble discharging means; and filter means for purifying the air before being fed into said air bubble discharging means; said air bubble discharging means comprising a mesh filter having a mesh of 0.5 to 10 μm square for discharging bubbles therefrom and air leading means for leading air to said discharging means; said device further comprising gas-passage switching means for selecting one of first and second passages according to gas detecting operation and gas discharging operation, respectively, said first passage communicating said pumping means through said air bubble discharging means to said gas container and said second passage communicating said gas container to said pumping means.
Claim 8
Independent Claim
203 words
A device for measuring a gas dissolved in an oil sample, comprising: a sample container for containing an oil sample; an air bubble discharging means, provided in said sample container, for extracting a measurement gas dissolved in said oil sample; a gas container for containing said measurement gas extracted by said air bubble discharging means; gas detecting means for detecting said measurement gas charged in said gas container; measuring means for measuring a concentration of said measurement gas in response to a signal dispatched from said gas detecting means; pumping means for supplying air to said air bubble discharging means; and filter means for purifying the air before being fed into said air bubble discharging means; said air bubble discharging means comprising a mesh filter having a mesh of 0.5 to 10 μm square for discharging bubbles therefrom and air leading means for leading air to said discharging means; said device further comprising gas-passage switching means for selecting one of first and second passages according to gas detecting operation and gas discharging operation, respectively, said first passage communicating said pumping means through said air bubble discharging means to said gas container and said second passage communicating said gas container to said pumping means.
Claim 9
Dependent Claim
46 words
A device as claimed in claim 5, further including air drying means in said first passage for drying the air from said pumping means, wherein said air drying means comprises a dry column filled with an absorbent material comprising any one of silica gel and zeolite.
Claim 10
Dependent Claim
17 words
A device as claimed in claim 1, wherein said gas detecting means comprises a semiconductor gas sensor.
Claim 11
Dependent Claim
18 words
A device as claimed in claim 1, wherein said gas detecting means is disposed in said gas container.
Claim 12
Independent Claim
166 words
A device for measuring a gas dissolved in an oil sample, comprising: a sample container for containing an oil sample; an air bubble discharging means, provided in said sample container, for extracting a measurement gas dissolved in said oil sample; a gas container for containing said measurement gas extracted by said air bubble discharging means; gas detecting means for detecting said measurement gas charged in said gas container; measuring means for measuring a concentration of said measurement gas in response to a signal dispatched from said gas detecting means; pumping means for supplying air to said air bubble discharging means; and filter means for purifying the air before being fed into said air bubble discharging means; said air bubble discharging means comprising a mesh filter having a mesh of 0.5 to 10 μm square for discharging bubbles therefrom and air leading means for leading air to said discharging means; wherein said sample container includes bubble eliminating means for eliminating air bubbles generated in said sample container.
Claim 13
Independent Claim
166 words
A device for measuring a gas dissolved in an oil sample, comprising: a sample container for containing an oil sample; an air bubble discharging means, provided in said sample container, for extracting a measurement gas dissolved in said oil sample; a gas container for containing said measurement gas extracted by said air bubble discharging means; gas detecting means for detecting said measurement gas charged in said gas container; measuring means for measuring a concentration of said measurement gas in response to a signal dispatched from said gas detecting means; pumping means for supplying air to said air bubble discharging means; and filter means for purifying the air before being fed into said air bubble discharging means; said air bubble discharging means comprising a mesh filter having a mesh of 0.5 to 10 μm square for discharging bubbles therefrom and air leading means for leading air to said discharging means; wherein said sample container includes bubble eliminating means for eliminating air bubbles generated in said sample container.
Claim 14
Dependent Claim
30 words
A device as claimed in claim 9, wherein said bubble eliminating means comprises at least one net for passing the measurement gas and preventing the air bubble from passing therethrough.
Claim 15
Dependent Claim
21 words
A device as claimed in claim 10, wherein said gas container is expansible according to the amount of the measurement gas.
Claim 16
Dependent Claim
48 words
A device as claimed in claim 11, wherein said gas container comprises a rubber bag for accommodating the measurement gas and a hard case for encasing said rubber bag and regulating expansion of said rubber bag so that a predetermined amount of the measurement gas is accommodated therein.
Claim 17
Dependent Claim
15 words
A device as claimed in claim 11, wherein said gas container comprises a tedler bag.
Claim 18
Dependent Claim
30 words
A device as claimed in claim 1, said device further comprises switching means for controlling energization of said pumping means when the capacity of said gas container reaches the maximum.
Claim 19
Dependent Claim
31 words
A device as claimed in claim 1, wherein said measuring means comprises a resistance bridging circuit one side component of which is at least a part of said gas detecting means.
Claim 20
Dependent Claim
21 words
A device as claimed in claim 1, wherein said filter means is provided at the entrance of said air leading means.
Claim 21
Dependent Claim
41 words
A device as claimed in claim 16, wherein said filter means comprises a case having an inlet for introducing the air and an outlet for discharging the purified air and a filter body provided in said case for purifying the air.
Claim 22
Dependent Claim
14 words
A device as claimed in claim 11, wherein said gas container comprises a cylinder.
Claim 23
Dependent Claim
14 words
A device as claimed in claim 11, wherein said gas container comprises a bellows.
Claim 24
Dependent Claim
41 words
A device as claimed in claim 1, wherein said filter means comprises a case having an inlet for introducing the air and an outlet for discharging the purified air and a filter body provided in said case for purifying the air.
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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) | 1994-11-04 | 1995-05-06 | 1995-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-04 | 1999-05-06 | 1999-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-04 | 2003-05-06 | 2003-11-05 | $7700.00 | Window Closed / Lapsed |