US3026713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the analysis of gases
Assignee: ABB Training Center GmbH and Co KG
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Filing: 1958-10-23
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Granted: 1962-03-27
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Expires: 1978-10-23
Abstract
No abstract record available.
Inventors
- 👤 Block Stefan
- 👤 Schlenz Hans Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:06
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/72; G01N27/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
210 words
A DEVICE FOR THE ANALYSIS OF GASES CONTAINING VARIABLE AMOUNTS OF OXYGEN AND SUBJECT TO TOTAL PRESSURE VARIATION, SAID DEVICE COMPRISING A BRIDGE CIRCUIT INCLUDING A PAIR OF HEATER WIRES IN ADJACENT ARMS OF THE BRIDGE; TEST AND COMPARISON GAS CHAMBERS FOR THE RESPECTIVE WIRES; A MAGNET IN THE TEST CHAMBER; RESISTANCE ELEMENTS IN OPPOSITE ADJACENT ARMS OF THE BRIDGE; A CONSTANT SUPPLY OF CURRENT FOR THE BRIDGE CONNECTED TO ONE DIAGONAL OF THE BRIDGE; TWO GANGED POTENTIOMETERS EACH HAVING RESISTORS WITH TWO END TERMINALS AND A SLIDE TAP; MEANS FOR SUPPLYING A POTENTIAL DIFFERENCE VARIABLE WITH A TOTAL PRESSURE OF THE TEST GAS TO THE END TERMINALS OF ONE RESISTOR; A SOURCE OF SUBSTANTIALLY CONSTANT POTENTIAL DIFFERENCE CONNECTED TO THE TERMINAL ENDS OF THE OTHER POTENTIOMETER; A TAKE-OFF CIRCUIT CONNECTED TO THE POINTS OF THE OTHER DIAGONAL AND INCLUDING THE RESPECTIVE PORTIONS OF THE TWO POTENTIOMETER RESISTORS BETWEEN AN END TERMINAL AND THE SLIDE TAP AND AN AMPLIFIER AT THE INPUT THEREOF, FOR VARYING THE INPUT TO THE AMPLIFIER TO CORRECT FOR ERRORS DUE TO DIFFERENCES IN PARTIAL PRESSURE OF OXYGEN WITH RESPECT TO TOTAL PRESSURE DURING FLUCTUATIONS OF THE LATTER AND, MOTOR MEANS CONNECTED TO THE OUTPUT OF THE AMPLIFIER FOR MOVING THE SLIDE TAPS TO NULL POSITION.
Claim 2
Independent Claim
210 words
A DEVICE FOR THE ANALYSIS OF GASES CONTAINING VARIABLE AMOUNTS OF OXYGEN AND SUBJECT TO TOTAL PRESSURE VARIATION, SAID DEVICE COMPRISING A BRIDGE CIRCUIT INCLUDING A PAIR OF HEATER WIRES IN ADJACENT ARMS OF THE BRIDGE; TEST AND COMPARISON GAS CHAMBERS FOR THE RESPECTIVE WIRES; A MAGNET IN THE TEST CHAMBER; RESISTANCE ELEMENTS IN OPPOSITE ADJACENT ARMS OF THE BRIDGE; A CONSTANT SUPPLY OF CURRENT FOR THE BRIDGE CONNECTED TO ONE DIAGONAL OF THE BRIDGE; TWO GANGED POTENTIOMETERS EACH HAVING RESISTORS WITH TWO END TERMINALS AND A SLIDE TAP; MEANS FOR SUPPLYING A POTENTIAL DIFFERENCE VARIABLE WITH A TOTAL PRESSURE OF THE TEST GAS TO THE END TERMINALS OF ONE RESISTOR; A SOURCE OF SUBSTANTIALLY CONSTANT POTENTIAL DIFFERENCE CONNECTED TO THE TERMINAL ENDS OF THE OTHER POTENTIOMETER; A TAKE-OFF CIRCUIT CONNECTED TO THE POINTS OF THE OTHER DIAGONAL AND INCLUDING THE RESPECTIVE PORTIONS OF THE TWO POTENTIOMETER RESISTORS BETWEEN AN END TERMINAL AND THE SLIDE TAP AND AN AMPLIFIER AT THE INPUT THEREOF, FOR VARYING THE INPUT TO THE AMPLIFIER TO CORRECT FOR ERRORS DUE TO DIFFERENCES IN PARTIAL PRESSURE OF OXYGEN WITH RESPECT TO TOTAL PRESSURE DURING FLUCTUATIONS OF THE LATTER AND, MOTOR MEANS CONNECTED TO THE OUTPUT OF THE AMPLIFIER FOR MOVING THE SLIDE TAPS TO NULL POSITION.
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) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |