US3668936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for sampling
Assignee: Bayer Corp
•
Filing: 1970-12-15
•
Granted: 1972-06-13
•
Expires: 1990-12-15
Abstract
Abstract There is provided a method and apparatus for sampling a viscous liquid by aspiration of such liquid from a container in an offtake tube of a probe insertable in the container. A reagent having the characteristic of a solvent is added to the sample to dilute it within the probe after a relatively short distance of travel of the sample within the probe. The reagent is fed into the probe at a first predetermined flow rate and the admixture is aspirated at a second predetermined flow rate which is faster so that the sample is aspirated at a rate determined by the difference between the first and second flow rates.
Inventors
- 👤 Rand E Herron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:16
CPC Classifications
G; G01; G01N; G01N35/00; G01N35/10; G01N35/1095; G01N1/00; G01N1/28; G01N1/38; G01N35/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
226 words
A method of treating a series of liquid samples for analysis, which samples have viscosities substantially greater than that of water and differing one from another, utilizing a sample probe immersible in such sample liquids successively and having a sample inlet and according to which the samples and a solvent liquid and a gas are transmitted in the form of a flowing stream in a first conduit connected to said probe and according to which said gas is effective to divide said stream into a series of spaced liquid segments separated from each other by intervening segments of gas, comprising: immersing said probe in such samples successively, flowing each such sample liquid into the probe while the latter is in the immersed condition through said inlet thereof, flowing said solvent liquid in a second conduit, flowing said gas in a third conduit, and concurrently introducing continuously said solvent liquid into the sample liquid in said probe in proximity to said inlet prior to the segmentation of said stream by said gas, so that the viscosity of the sample liquid is lessened for flow through saId probe and said first conduit and the formation of said liquid segments occurs after the introduction of said solvent liquid, whereby the sample liquids flowing in said probe and in said first conduit tend to have uniform viscosities one to another.
Claim 2
Independent Claim
226 words
A method of treating a series of liquid samples for analysis, which samples have viscosities substantially greater than that of water and differing one from another, utilizing a sample probe immersible in such sample liquids successively and having a sample inlet and according to which the samples and a solvent liquid and a gas are transmitted in the form of a flowing stream in a first conduit connected to said probe and according to which said gas is effective to divide said stream into a series of spaced liquid segments separated from each other by intervening segments of gas, comprising: immersing said probe in such samples successively, flowing each such sample liquid into the probe while the latter is in the immersed condition through said inlet thereof, flowing said solvent liquid in a second conduit, flowing said gas in a third conduit, and concurrently introducing continuously said solvent liquid into the sample liquid in said probe in proximity to said inlet prior to the segmentation of said stream by said gas, so that the viscosity of the sample liquid is lessened for flow through saId probe and said first conduit and the formation of said liquid segments occurs after the introduction of said solvent liquid, whereby the sample liquids flowing in said probe and in said first conduit tend to have uniform viscosities one to another.
Claim 3
Dependent Claim
15 words
A method as defined in claim 1, wherein: each sample liquid consists of lubricating oil.
Claim 4
Dependent Claim
27 words
A method as defined in claim 1, wherein: each sample liquid is lubricating oil bearing trace amounts of wear metal and the solvent liquid is caprylic alcohol.
References Cited (Backward Citations)
US2899280A
Cited
US3186235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |