US2866691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for gas analysis
Assignee: Geraetebau-Anstalt
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Filing: 1955-08-22
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Granted: 1958-12-30
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Expires: 1975-08-22
Abstract
No abstract record available.
Inventors
- 👤 Feichtinger Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:16
CPC Classifications
G; G01; G01N; G01N7/00; G01N7/02; G01N7/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A GAS ANALYSIS APPARATUS, COMPRISING A PRELIMINARY MEASURING CHAMBER, A PLURALITY OF REACTION CHAMBERS, CAPILLARY TUBES DIRECTLY INTERCONNECTING SAID CHAMBERS IN SERIES AND BEING PROVIDED WITH INDEX MARKS, SAID TUBES AND SOME OF SAID CHAMBERS BEING FILLED WITH A DISPLACEMENT LIQUID FOR CONTACTING AND DISPLACING A GAS SAMPLE THROUGH SAID TUBES AND CHAMBERS, THE REMAINING CHAMBERS BEING FILLED WITH RESPECTIVE REAGENTS, A PLURALITY OF PRESSURE EQUALIZING CHAMBERS PROVIDED WITH VALVES COMMUNICATING, RESPECTIVELY, WITH SAID MEASURING AND REACTION CHAMBER, A SUPPLY CHAMBER OF SAID DISPLACEMENT LIQUID COMMUNICATING WITH SAID MEASURING CHAMBER, AND MEANS OPERATIVELY CONNECTED TO SAID SUPPLY CHAMBER FOR DISPENSING THEREFROM PREDETERMINED QUANTITIES OF SAID LIQUID, WHEREBY UPON SELECTED ACTUATION OF SAID LASTNAMED MEANS AND SAID VALVES SAID SMAPLE IS DISPLACED BY SAID LIQUID THROUGH SAID TUBES AND SAID CHAMBERS FOR INTERACTION WITH SAID REAGENTS, RESPECTIVELY, THE VOLUME OF SAID SAMPLE EMERGING SEQUENTIALLY FROM SAID CHAMBERS CORRESPONDING TO THE AMOUNT OF SAID LIQUID REQUIRED FOR DISPLACING SAID SAMPLE PAST THE RESPECTIVE INDEX MARKS.
Claim 2
Dependent Claim
163 words
A GAS ANALYSIS APPARATUS, COMPRISING A PRELIMINARY MEASURING CHAMBER, A PLURALITY OF REACTION CHAMBERS, CAPILLARY TUBES DIRECTLY INTERCONNECTING SAID CHAMBERS IN SERIES AND BEING PROVIDED WITH INDEX MARKS, SAID TUBES AND SOME OF SAID CHAMBERS BEING FILLED WITH A DISPLACEMENT LIQUID FOR CONTACTING AND DISPLACING A GAS SAMPLE THROUGH SAID TUBES AND CHAMBERS, THE REMAINING CHAMBERS BEING FILLED WITH RESPECTIVE REAGENTS, A PLURALITY OF PRESSURE EQUALIZING CHAMBERS PROVIDED WITH VALVES COMMUNICATING, RESPECTIVELY, WITH SAID MEASURING AND REACTION CHAMBER, A SUPPLY CHAMBER OF SAID DISPLACEMENT LIQUID COMMUNICATING WITH SAID MEASURING CHAMBER, AND MEANS OPERATIVELY CONNECTED TO SAID SUPPLY CHAMBER FOR DISPENSING THEREFROM PREDETERMINED QUANTITIES OF SAID LIQUID, WHEREBY UPON SELECTED ACTUATION OF SAID LASTNAMED MEANS AND SAID VALVES SAID SMAPLE IS DISPLACED BY SAID LIQUID THROUGH SAID TUBES AND SAID CHAMBERS FOR INTERACTION WITH SAID REAGENTS, RESPECTIVELY, THE VOLUME OF SAID SAMPLE EMERGING SEQUENTIALLY FROM SAID CHAMBERS CORRESPONDING TO THE AMOUNT OF SAID LIQUID REQUIRED FOR DISPLACING SAID SAMPLE PAST THE RESPECTIVE INDEX MARKS.
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) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |