US3740156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photometric analyzer sampling cell
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1971-08-11
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Granted: 1973-06-19
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Expires: 1991-08-11
Abstract
Abstract A movable window which coacts with a fixed window in an onstream photometric analyzer for trapping a sample of flowing fluid for analysis without interrupting the flow of the main stream. The two windows comprise a sample cell when in close proximity to one another. After the analysis, the movable window is retracted so that the sample is released and residues purged by the main stream before the process is repeated.
Inventors
- 👤 J Heigl
- 👤 O Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:01
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/01; G01N21/03; G01N1/00; G01N1/02; G01N1/10; G01N2021/0346; G01N35/00; G01N35/10; G01N35/1095
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
115 words
A method of on-stream measurement of a continuously flowing viscous fluid stream comprising: a. trapping a sample of said viscous fluid between relatively movable radiation transparent parallel surfaces mounted within said flowing stream and parallel to the direction of flow by moving said surfaces into predetermined relative close promixity and thereby creating an optical cell without sides; b. passing radiation through said sample; c. receiving said radiation in a detector means and comparing the received radiation with radiation passed through a known standard; then d. releasiNg said sample from between said transparent surfaces into said flowing stream by retracting at least one of said surfaces from the position of close proximity established in step (a).
Claim 2
Independent Claim
115 words
A method of on-stream measurement of a continuously flowing viscous fluid stream comprising: a. trapping a sample of said viscous fluid between relatively movable radiation transparent parallel surfaces mounted within said flowing stream and parallel to the direction of flow by moving said surfaces into predetermined relative close promixity and thereby creating an optical cell without sides; b. passing radiation through said sample; c. receiving said radiation in a detector means and comparing the received radiation with radiation passed through a known standard; then d. releasiNg said sample from between said transparent surfaces into said flowing stream by retracting at least one of said surfaces from the position of close proximity established in step (a).
Claim 3
Dependent Claim
25 words
The method of claim 1 wherein said radiation transparent surfaces are positioned in predetermined close proximity with compensation for the effect of temperature or spacing.
Claim 4
Dependent Claim
144 words
a second passageway smaller in cross-section than said first passageway intersecting said first passageway in substantially perpendicular relationship; b. a plunger means slidably mounted within said second passageway for movement between a retracted and extended position and having mounted thereon at one end and disposed adjacent to said first passageway a first transparent window disposed at one side of said first passageway when retracted and parallel to the direction of flow through said first passageway; c. a second transparent window disposed within said second passageway on the opposite side of said first passageway in aligned relationship with said first window, whereby said first window can be located in predetermined close proximity to said second window for confining a sample of said flowing fluid therebetween for analysis and permitting the remainder of said flowing stream to flow through the unoccupied area of said first passageway.
Claim 5
Dependent Claim
144 words
a second passageway smaller in cross-section than said first passageway intersecting said first passageway in substantially perpendicular relationship; b. a plunger means slidably mounted within said second passageway for movement between a retracted and extended position and having mounted thereon at one end and disposed adjacent to said first passageway a first transparent window disposed at one side of said first passageway when retracted and parallel to the direction of flow through said first passageway; c. a second transparent window disposed within said second passageway on the opposite side of said first passageway in aligned relationship with said first window, whereby said first window can be located in predetermined close proximity to said second window for confining a sample of said flowing fluid therebetween for analysis and permitting the remainder of said flowing stream to flow through the unoccupied area of said first passageway.
Claim 6
Dependent Claim
196 words
a second passageway smaller in cross-section than said first passageway for transmitting radiation through said body member and intersecting said first passageway whereby radiation may be passed through a sample of flowing stream; b. a hollow plunger slidably mounted within said second passageway and having mounted thereon at one end and disposed adjacent to said first passageway a first window transparent to the radiation to be transmitted, said window being disposed at one side of said first passageway when retracted and parallel to the direction of flow through said passageway; c. a hollow mounting insert having a second window transparent to the radiation to be transmitted and disposed within said second passageway on the opposite side of said first passageway from said first window and parallel to said first window, said second window projecting into said first passageway; and d. means for moving said plunger and positioning it such that said first window can be located in predetermined close proximity to said second window for confining a sample of said flowing fluid between said windows for analysis by radiation and permitting the remainder of said stream to flow through the unoccupied area of said first passageway.
Claim 7
Dependent Claim
196 words
a second passageway smaller in cross-section than said first passageway for transmitting radiation through said body member and intersecting said first passageway whereby radiation may be passed through a sample of flowing stream; b. a hollow plunger slidably mounted within said second passageway and having mounted thereon at one end and disposed adjacent to said first passageway a first window transparent to the radiation to be transmitted, said window being disposed at one side of said first passageway when retracted and parallel to the direction of flow through said passageway; c. a hollow mounting insert having a second window transparent to the radiation to be transmitted and disposed within said second passageway on the opposite side of said first passageway from said first window and parallel to said first window, said second window projecting into said first passageway; and d. means for moving said plunger and positioning it such that said first window can be located in predetermined close proximity to said second window for confining a sample of said flowing fluid between said windows for analysis by radiation and permitting the remainder of said stream to flow through the unoccupied area of said first passageway.
Claim 8
Dependent Claim
44 words
An analyzer cell for on-stream measurements of a continuously flowing viscous fluid stream comprising: a. a body member adapted to be operably connected to conduits carrying said flowing stream and having: 1 a first passageway for carrying said flowing stream through said body member;
Claim 9
Dependent Claim
44 words
An analyzer cell for on-stream measurements of a continuously flowing viscous fluid stream comprising: a. a body member adapted to be operably connected to conduits carrying said flowing stream and having: 1 a first passageway for carrying said flowing stream through said body member;
Claim 10
Dependent Claim
31 words
The analyzer cell of claim 3 wherein said positioning means for said plunger includes compensation for temperature to provide for accurate positioning of said first window relative to said second window.
Claim 11
Dependent Claim
21 words
The analyzer cell of claim 3 including adjustable abutments to determine the position of said first window to said second window.
Claim 12
Dependent Claim
37 words
The analyzer cell of claim 3 having more than one set of packing rings for sealing said plunger within said second passageway whereby leakage is prevented and provided with vent means located between said sets of rings.
Claim 13
Dependent Claim
35 words
The analyzer cell of claim 3 wherein said positioning means for said plunger limits the speed of movement of said plunger below that at which excessive pressure build-up would occur upstream of the analyzer cell.
Claim 14
Dependent Claim
29 words
An analyzer cell for on-stream measurements of a continuously flowing viscous fluid stream comprising: a. a body member adapted to be operably connected in said flowing stream and having
Claim 15
Dependent Claim
29 words
An analyzer cell for on-stream measurements of a continuously flowing viscous fluid stream comprising: a. a body member adapted to be operably connected in said flowing stream and having
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |