US3771353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for measuring oil in water
Assignee: Western Atlas International Inc
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Filing: 1972-01-06
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Granted: 1973-11-13
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Expires: 1992-01-06
Abstract
Abstract Method and apparatus for measuring minute quantities of oil in water in which an annular oil collecting chamber having a transparent cover with graduated volume indicia is secured at the upper ends of coaxial output tubes extending upwardly from the narrow upper end of a frusto-conical centrifugal separation chamber, so that the separated oil flows from said separation chamber through the annular space between said output tubes into said collecting chamber, where its volume may be determined with reference to said volume indicia.
Inventors
- 👤 R Jenkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:47
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/18; G01N33/1826; G01N33/1833; Y; Y10; Y10S; Y10S494/00; Y10S494/901
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
204 words
A method of measuring minute quantities of oil in water comprising providing a centrifugal separator of the type having a frusto-conical separation chamber with a central input duct communicating with its wide lower end and a pair of coaxial output tubes at the narrow upper end of said separation chamber, wherein the annular space between said output tubes communicates with the upper end of said separation chamber, with an annular oil collecting chamber having an annular base member secured to the upper end portion of the outer one of said output tubes, and a transparent annular cover member having its inner edge surrounding the inner one of said output tubes, and its outer edge sealed to the outer edge of said base member in liquid-tight manner, and graduated volume indicia on said cover member, feeding a measured volume of said water through said input duct into the lower end of said separation chamber, rotating said separation chamber at high speed to cause separation of said oil, removing said oil from the upper end of said separation chamber through said annular space into said collecting chamber, and determining the volume of the separated oil accumulated in said collecting chamber by reference to said volume indicia.
Claim 2
Independent Claim
204 words
A method of measuring minute quantities of oil in water comprising providing a centrifugal separator of the type having a frusto-conical separation chamber with a central input duct communicating with its wide lower end and a pair of coaxial output tubes at the narrow upper end of said separation chamber, wherein the annular space between said output tubes communicates with the upper end of said separation chamber, with an annular oil collecting chamber having an annular base member secured to the upper end portion of the outer one of said output tubes, and a transparent annular cover member having its inner edge surrounding the inner one of said output tubes, and its outer edge sealed to the outer edge of said base member in liquid-tight manner, and graduated volume indicia on said cover member, feeding a measured volume of said water through said input duct into the lower end of said separation chamber, rotating said separation chamber at high speed to cause separation of said oil, removing said oil from the upper end of said separation chamber through said annular space into said collecting chamber, and determining the volume of the separated oil accumulated in said collecting chamber by reference to said volume indicia.
Claim 3
Dependent Claim
40 words
A method as described in claim 1 in which said volume indicia are graduated inwardly from the periphery of said collecting chamber and in which the volume of said oil is determined while said apparatus is rotating at high speed.
Claim 4
Dependent Claim
130 words
A measuring attachment for a centrifugal separator of the type having a frusto-conical separation chamber with a pair of concentric output tubes extending coaxially upward from the narrow upper end of said separation chamber, with the annular space between said output tubes communicating with the interior of the narrow upper end of said separation chamber to receive the separated lighter phase liquid, said attachment comprising a collecting chamber formed by an annular base member secured to the upper end portion of the outer one of said output tubes, and a transparent annular cover member having its inner edge surrounding the inner one of said output tubes, and its outer edge sealed to the outer edge of said base member in liquid-tight manner, and graduated volume indicia on said cover member.
Claim 5
Dependent Claim
130 words
A measuring attachment for a centrifugal separator of the type having a frusto-conical separation chamber with a pair of concentric output tubes extending coaxially upward from the narrow upper end of said separation chamber, with the annular space between said output tubes communicating with the interior of the narrow upper end of said separation chamber to receive the separated lighter phase liquid, said attachment comprising a collecting chamber formed by an annular base member secured to the upper end portion of the outer one of said output tubes, and a transparent annular cover member having its inner edge surrounding the inner one of said output tubes, and its outer edge sealed to the outer edge of said base member in liquid-tight manner, and graduated volume indicia on said cover member.
Claim 6
Dependent Claim
25 words
Apparatus as described in claim 3 in which said collecting chamber is tapered in depth, being thinner at its periphery than at its inner portion.
Claim 7
Dependent Claim
10 words
Apparatus as described in claim 4 the taper is exponential.
Claim 8
Dependent Claim
62 words
Apparatus as described in claim 3 in which the inner edge of said base member is internally threaded for engagement with external threads on said outer tube, and in which said cover member is removably secured on top of said base member by an inner retaining ring threaded onto said inner tube and an outer retaining ring threaded on said Base member.
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) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |