US3581473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sampling apparatus
Assignee: Applied Automation Inc
•
Filing: 1969-04-23
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Granted: 1971-06-01
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Expires: 1989-04-23
Abstract
Abstract An apparatus for preparing a gaseous sample stream for analysis by means passing said sample through a first scrubbing column, a second scrubbing column containing scrubbing liquid flowing in an opposed direction relative to the flow direction of the sample, a heat exchanger, and a drying column.
Inventors
- 👤 Otis E Ririe Jr
- 👤 John M Magee
- 👤 Herbert A Ems
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:05
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/34; G01N1/40; G01N1/4055; G01N2001/4066; Y; Y10; Y10S; Y10S261/00; Y10S261/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
An apparatus, as set forth in claim 1, wherein a filter is positioned between the inlet and outlet ends of the sample fluid path means of the heat exchanger.
Claim 2
Dependent Claim
44 words
An apparatus, as set forth in claim 1, wherein the coolant fluid path means of the heat exchanger is extended through a line with said line being in contact with the second scrubbing column for cooling the sample stream in the second scrubbing column.
References Cited (Backward Citations)
US852543A
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US2413503A
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US2754930A
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US2787335A
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US2861431A
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US3076301A
Cited
US3219051A
Cited
US3165149A
Cited
US3490202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |