Patent US4517849A successfully refreshed from Google Patents.
US4517849A
Expired / Lapsed
US
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Sampling system for water quality sensors
Assignee: Mitsubishi Electric Corp
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Filing: 1983-06-20
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Granted: 1985-05-21
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Expires: 2003-06-20
Abstract
Abstract A sampling system for use in the analysis of water samples using quality sensors includes a device for intermittently supplying cleaning water containing ozone to the sensors, valves, pumps and related piping for cleaning the same.
Inventors
- 👤 Ichiro Nakahori
- 👤 Shigeki Nakayama
- 👤 Mitsuo Maeda
- 👤 Shiro Yamauchi
- 👤 Junichiro Ozawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:44
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/38; G01N1/00; G01N1/02; G01N1/10; G01N33/00; G01N33/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
In a sample system including means for directing water samples to at least one water quality sensor for analysis, the improvement comprising: means for supplying ozone-containing cleaning water to areas of said system which come into contact with said water samples, said samples being taken at more than one sampling point and being sequentially directed to a plurality of said sensors, and said sample system further including sampling pump means proximate each said sampling point, and cleaning pump means for directing said cleaning water through said areas.
Claim 2
Dependent Claim
87 words
In a sample system including means for directing water samples to at least one water quality sensor for analysis, the improvement comprising: means for supplying ozone-containing cleaning water to areas of said system which come into contact with said water samples, said samples being taken at more than one sampling point and being sequentially directed to a plurality of said sensors, and said sample system further including sampling pump means proximate each said sampling point, and cleaning pump means for directing said cleaning water through said areas.
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) | 1988-05-20 | 1988-11-19 | 1989-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-20 | 1992-11-19 | 1993-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-20 | 1996-11-19 | 1997-05-21 | $7700.00 | Window Closed / Lapsed |