US3822947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid sample flow cell
Assignee: Individual
•
Filing: 1973-02-28
•
Granted: 1974-07-09
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Expires: 1993-02-28
Abstract
Abstract A fluid sample flow cell having a body member with a cylindrical opening therethrough, the cylindrical opening being sealed at opposite ends with transparent windows. An insert having an axially extending aperture therethrough is snugly fitted within the cylindrical opening, the end surfaces being displaced from the transparent windows to define an entrance chamber and an exit chamber respectively. The entrance chamber is provided with an inlet port within the body member, the inlet port being disposed parallel to and displaced from the diameter of the cylindrical opening. The exit chamber is provided with an exit port within the body member, the exit port being displaced from and parallel to the diameter of the cylindrical opening. The insert is provided with an annular portion extending into the exit chamber, the exit port communicating with the exit chamber in proximity to the outer surface of the annular portion.
Inventors
- 👤 R Aday
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:40
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/01; G01N21/03; G01N21/05; G01N2021/054
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
142 words
A fluid sample flow cell comprising: a body having a cylindrical fluid sample receiving and analyzing passageway therethrough; said body having adjacent each end of said passageway a chamber of greater diameter than said passageway; said body having sealing means, including transparent windows disposed over the ends of said chambers; an entrance port communicating with one of said chambers, said one chamber having a wall substantially parallel to the transparent window associated therewith; an exit port communicating with the other of said chambers; and an annular portion formed with said body and displaced from said transparent window within said other chamber, said annular portion having an inner surface coextensive with said passageway and having an outer surface having a diameter less than the diameter of said other chamber, the end of said annular portion adjacent said transparent window being substantially parallel thereto.
Claim 2
Dependent Claim
142 words
A fluid sample flow cell comprising: a body having a cylindrical fluid sample receiving and analyzing passageway therethrough; said body having adjacent each end of said passageway a chamber of greater diameter than said passageway; said body having sealing means, including transparent windows disposed over the ends of said chambers; an entrance port communicating with one of said chambers, said one chamber having a wall substantially parallel to the transparent window associated therewith; an exit port communicating with the other of said chambers; and an annular portion formed with said body and displaced from said transparent window within said other chamber, said annular portion having an inner surface coextensive with said passageway and having an outer surface having a diameter less than the diameter of said other chamber, the end of said annular portion adjacent said transparent window being substantially parallel thereto.
Claim 3
Dependent Claim
33 words
The combination according to claim 1 wherein each of said chambers has a circular cross section, and said other chamber has an annular passageway formed therein about the periphery of said annular portion.
Claim 4
Dependent Claim
24 words
The combination according to claim 2 wherein said entrance port is disposed parallel and offset from the diameter of said one of said chambers.
Claim 5
Dependent Claim
20 words
The combination according to claim 3 wherein said exit port communicates only with said annular passageway in said other chamber.
Claim 6
Dependent Claim
23 words
The combination according to claim 4 wherein said exit port is disposed parallel to and offset from the diameter of said other chamber.
Claim 7
Dependent Claim
54 words
The combination according to claim 5 wherein said body includes a cylindrical member having a cylindrical aperture therethrough and an insert secured within said aperture, said analyzing passageway extending through said insert, and said chambers being defIned by the ends of said insert, the inner surface of said cylindrical aperture, and said sealing means.
Claim 8
Dependent Claim
27 words
The combination according to claim 6 wherein said analyzing passageway has the entrance end thereof configured to provide a reducing diameter in the direction of fluid flow.
Claim 9
Dependent Claim
27 words
The combination according to claim 7 wherein the exit end of said analyzing passageway is configured to provide an increasing diameter in the direction of fluid flow.
Claim 10
Dependent Claim
20 words
The combination according to claim 8 wherein the entrance end and the exit end of said analyzing passageway are chamfered.
References Cited (Backward Citations)
US3020795A
Cited
US3289527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |