Patent US3887334A successfully refreshed from Google Patents.
US3887334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygen meter
Assignee: Individual
•
Filing: 1973-04-13
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Granted: 1975-06-03
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Expires: 1993-04-13
Abstract
Abstract For measurement of the oxygen in the atmosphere a closed vessel is provided with inlet and outlet valves, air-pumping means connected to one of those valves, a heating element to deliver heat to the interior of the vessel, a fuel container in the vessel, a duct disposed in the vessel above the container, means to ignite the fuel in the container, and means to measure the temperature in the duct.
Inventors
- 👤 Julius Bago
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:41
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/14; G01N27/16; Y; Y10; Y10T; Y10T436/00; Y10T436/20; Y10T436/207497
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
43 words
THE METHOD OF MEASURING THE OXYGEN CONTENT OF THE ATMOSPHERE WHICH COMPRISES ENCLOSING A SAMPLE OF THE ATMOSPHERE IN A CLOSED VESSEL, DELIVERING FUEL TO THE INTERIOR OF THE VESSEL, IGNITING THE FUEL, AND MEASURING THE TEMPERAURE AT A POINT WITHIN THE VESSEL.
Claim 2
Independent Claim
43 words
THE METHOD OF MEASURING THE OXYGEN CONTENT OF THE ATMOSPHERE WHICH COMPRISES ENCLOSING A SAMPLE OF THE ATMOSPHERE IN A CLOSED VESSEL, DELIVERING FUEL TO THE INTERIOR OF THE VESSEL, IGNITING THE FUEL, AND MEASURING THE TEMPERAURE AT A POINT WITHIN THE VESSEL.
Claim 3
Independent Claim
43 words
The method of measuring the oxygen content of the atmosphere which comprises enclosing a sample of the atmosphere in a closed vessel, delivering fuel to the interior of the vessel, igniting the fuel, and measuring the temperature at a point within the vessel.
Claim 4
Independent Claim
43 words
The method of measuring the oxygen content of the atmosphere which comprises enclosing a sample of the atmosphere in a closed vessel, delivering fuel to the interior of the vessel, igniting the fuel, and measuring the temperature at a point within the vessel.
Claim 5
Dependent Claim
26 words
The method according to claim 1 comprising the further step of raising the temperature of the sample to a predetermined level prior to igniting the fuel.
Claim 6
Dependent Claim
48 words
Appartaus for measuring the oxygen content of the atmosphere comprising a closable insulated vessel, a fuel container in the vessel, a duct disposed in the vessel above the container, means to ignite fuel in the container, and means to measure the temperature at a point in the duct.
Claim 7
Dependent Claim
48 words
Appartaus for measuring the oxygen content of the atmosphere comprising a closable insulated vessel, a fuel container in the vessel, a duct disposed in the vessel above the container, means to ignite fuel in the container, and means to measure the temperature at a point in the duct.
Claim 8
Dependent Claim
17 words
Apparatus according to claim 3 further including means to deliver heat to the interior of the vessel.
Claim 9
Dependent Claim
21 words
Apparatus according to claim 3 in which the duct has the shape of a conical frustum with its large end downwards.
Claim 10
Dependent Claim
14 words
Apparatus according to claim 3 further including inlet and outlet valves to the vessel.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |