US3543565A
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US
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Method and apparatus for determining the concentration of dredger spoil in a suspension of dredger spoil and water flowing through a pipe
Assignee: Ingenieursbureau voor Systemen en Octrooien Spanstaal BV
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Filing: 1968-03-28
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Granted: 1970-12-01
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Expires: 1988-03-28
Abstract
Abstract A method and apparatus for measuring the slurry concentration and velocity distribution in a pipeline wherein a first probe is used to determine the velocity at a predetermined position in the pipeline and a sample probe is then moved to the position and sampling rate adjusted until the velocity response to the two probes are equal. The local value of the velocity is obtained by dividing volume per unit of time of the sample by the cross-sectional area of the probe while the slurry concentration and particle size distribution are obtained by analysis.
Inventors
- 👤 Jan De Koning
- 👤 Romke Van Der Veen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:39
CPC Classifications
B; B65; B65G; B65G53/00; B65G53/30; E; E02; E02F; E02F3/00; E02F3/04; E02F3/88; E02F3/90; E02F3/907; G; G01; G01N; G01N15/00; G01N15/06; G01N9/00; G01N9/26; G01P; G01P5/00; G01P5/10; G01P5/12
Claims Analysis
Total Claims: 0
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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) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |