Patent US3582284A successfully refreshed from Google Patents.
US3582284A
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US
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Sampling chemical plant fluids and novel valves
Assignee: Marchon Products Ltd
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Filing: 1967-10-11
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Granted: 1971-06-01
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Expires: 1987-10-11
Abstract
Abstract A SYSTEM FOR SAMPLING CHEMICAL PLANT FLUIDS IN WHICH THE SAMPLE IS WITHDRAWN THROUGH A FILTER AND THE FILTERED FLUID PASSED THROUGH A SAMPLE VESSEL TO A RESERVOIR. WHEN THE FLUID IN THE SAMPLE VESSEL IS CLEAR THE FLOW IS HALTED AND THE CLEAR FLUID TRANSFERRED TO A HOLDING VESSEL WHILE THE FILTER IS BACKWASHED. SAMPLE FLUID IS CONTINUOUSLY WITHDRAWN FROM THE HOLDING VESSEL FOR ANALYSIS, E.G., TO DETERMINE THE SULPHATE CONTENT. VALVING IS BY THE ALTERNATE CONSTRICTION OF TWO SETS OF ELASTIC TUBES BY A RECIPROCATING PISTON. D R A W I N G
Inventors
- 👤 Wilfred C Hamshere
- 👤 Thomas W L Atkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:19
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/40; G01N1/4077; G01N1/02; G01N1/10; G01N2001/1006; G01N2001/1012; G01N2001/1025; G01N35/00; G01N35/10; G01N35/1004; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87153; Y10T137/87161; Y10T436/00; Y10T436/11; Y10T436/117497; Y10T436/18; Y10T436/25; Y10T436/25375
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
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 |