US2726548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas sampling device
Assignee: Ruhrchemie AG
•
Filing: 1952-01-12
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Granted: 1955-12-13
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Expires: 1972-01-12
Abstract
No abstract record available.
Inventors
- 👤 List Theodor Van Der
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:11
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
A DEVICE FOR CONTINUOUSLY WITHDRAWING A PROPORTIONAL AMOUNT OF SAMPLE GAS FROM GASES FLOWING THROUGH A GAS MAIN FOR COLLECTION IN A SAMPLE GAS HOLDER, WHICH COMPRISES THROTTLING MEANS POSITIONED IN A CROSS-SECTION OF SUCH A GAS MAIN, MEANS DEFINING AN ENCLOSED CHAMBER, DIAPHRAGM MEANS SUBDIVIDING SAID ENCLOSED CHAMBER INTO TWO PARTIAL CHAMBERS, THERE BEING AN OPENING IN A WALL OF ONE OF SAID PARTIAL CHAMBERS, A SAMPLE GAS HOLDER, BRANCHED PIPE MEANS WITH ONE BRANCH THEREOF CONNECTING SAID OPENING TO SAID SAMPLE GAS HOLDER, AND THE OTHER BRANCH THEREOF CONNECTING SAID OPENING TO THE ATMOSPHERE, MEANS DEFINING A THROTTLE OPENING IN EACH BRANCH OF SAID BRANCH PIPE MEANS, VALVE MEANS CONNECTED TO SAID DIAPHRAGM POSITIONED IN SAID ONE OF SAID PARTIAL CHAMBERS FOR OPENING AND CLOSING SAID OPENING IN SAID PARTIAL CHAMBER UPON ACTUATION BY SAID DIAPHRAGM MEANS, A BRANCH PIPE LINE CONNECTING SAID VALVE-CONTAINING PARTIAL CHAMBER TO THE GAS MAIN IN FRONT OF SAID THROTTLING MEANS, MEANS DEFINING A THROTTLE OPENING POSITIONED IN SAID LAST MENTIONED BRANCH PIPE LINE, AND A SUBSTANTIALLY THROTTLE FREE BRANCH PIPE LINE CONNECTING SAID OTHER PARTIAL CHAMBER TO THE GAS MAIN BEHIND SAID THROTTLING MEANS.
Claim 2
Independent Claim
192 words
A DEVICE FOR CONTINUOUSLY WITHDRAWING A PROPORTIONAL AMOUNT OF SAMPLE GAS FROM GASES FLOWING THROUGH A GAS MAIN FOR COLLECTION IN A SAMPLE GAS HOLDER, WHICH COMPRISES THROTTLING MEANS POSITIONED IN A CROSS-SECTION OF SUCH A GAS MAIN, MEANS DEFINING AN ENCLOSED CHAMBER, DIAPHRAGM MEANS SUBDIVIDING SAID ENCLOSED CHAMBER INTO TWO PARTIAL CHAMBERS, THERE BEING AN OPENING IN A WALL OF ONE OF SAID PARTIAL CHAMBERS, A SAMPLE GAS HOLDER, BRANCHED PIPE MEANS WITH ONE BRANCH THEREOF CONNECTING SAID OPENING TO SAID SAMPLE GAS HOLDER, AND THE OTHER BRANCH THEREOF CONNECTING SAID OPENING TO THE ATMOSPHERE, MEANS DEFINING A THROTTLE OPENING IN EACH BRANCH OF SAID BRANCH PIPE MEANS, VALVE MEANS CONNECTED TO SAID DIAPHRAGM POSITIONED IN SAID ONE OF SAID PARTIAL CHAMBERS FOR OPENING AND CLOSING SAID OPENING IN SAID PARTIAL CHAMBER UPON ACTUATION BY SAID DIAPHRAGM MEANS, A BRANCH PIPE LINE CONNECTING SAID VALVE-CONTAINING PARTIAL CHAMBER TO THE GAS MAIN IN FRONT OF SAID THROTTLING MEANS, MEANS DEFINING A THROTTLE OPENING POSITIONED IN SAID LAST MENTIONED BRANCH PIPE LINE, AND A SUBSTANTIALLY THROTTLE FREE BRANCH PIPE LINE CONNECTING SAID OTHER PARTIAL CHAMBER TO THE GAS MAIN BEHIND SAID THROTTLING MEANS.
References Cited (Backward Citations)
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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) | 1958-12-12 | 1959-06-13 | 1959-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-12 | 1963-06-13 | 1963-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-12 | 1967-06-13 | 1967-12-13 | $7700.00 | Window Closed / Lapsed |