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Patent US3647304A successfully refreshed from Google Patents.
US3647304A
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US
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Microvolume flow cell
Assignee: Milton Roy LLC
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Filing: 1970-01-12
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Granted: 1972-03-07
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Expires: 1990-01-12
Abstract
Abstract A microvolume flow cell for providing laminar fluid flow comprises an insert having an inlet and an outlet and each defining a plurality of openings channeling to a generally cylindrical fluid chamber formed therein. The openings in the inlet end are elongated and equidistantly disposed about the periphery of the inlet for providing for a laminar fluid flow therethrough into the fluid chamber. The openings in the outlet end comprise two diametrically disposed exit ports of differing size for fluid communication with a waste system. The smaller exit port is disposed with a troughlike drainage slot extending the length of the fluid chamber.
Inventors
- 👤 Henry J Emmel
- 👤 Thomas J Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:36
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/01; G01N21/03; G01N21/05
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
212 words
A fluid cell for carrying fluid to be analyzed by optical analyzing apparatus, comprising: inner body structure having a fluid inlet end and a fluid outlet end defining therebetween a fluid chamber having a generally cylindrically shaped sidewall, the inner body structure having formed therein at the inlet end a plurality of separate elongated openings in communication with the fluid chamber, said plurality of separate elongated openings extending outwardly from the generally cylindrically shaped sidewall of the chamber for carrying fluid to the chamber for analySis; and outer body structure disposed about the inner body structure, said outer body structure having optical windows sealed fluidtight at opposite ends of the fluid chamber for permitting the viewing of the fluid by optical analyzing apparatus generally in a direction axial to the generally cylindrically shaped sidewall of the fluid chamber, the outer body structure defining an annularly shaped fluid inlet passageway formed by the inner and outer body structure and said annularly shaped fluid inlet passageway being in fluid communication with the fluid chamber through the plurality of separate elongated openings which extend from the fluid chamber to the annularly shaped fluid inlet passageway, and the outer structure defining at the fluid outlet end a fluid outlet passageway in communication with the fluid chamber.
Claim 2
Dependent Claim
212 words
A fluid cell for carrying fluid to be analyzed by optical analyzing apparatus, comprising: inner body structure having a fluid inlet end and a fluid outlet end defining therebetween a fluid chamber having a generally cylindrically shaped sidewall, the inner body structure having formed therein at the inlet end a plurality of separate elongated openings in communication with the fluid chamber, said plurality of separate elongated openings extending outwardly from the generally cylindrically shaped sidewall of the chamber for carrying fluid to the chamber for analySis; and outer body structure disposed about the inner body structure, said outer body structure having optical windows sealed fluidtight at opposite ends of the fluid chamber for permitting the viewing of the fluid by optical analyzing apparatus generally in a direction axial to the generally cylindrically shaped sidewall of the fluid chamber, the outer body structure defining an annularly shaped fluid inlet passageway formed by the inner and outer body structure and said annularly shaped fluid inlet passageway being in fluid communication with the fluid chamber through the plurality of separate elongated openings which extend from the fluid chamber to the annularly shaped fluid inlet passageway, and the outer structure defining at the fluid outlet end a fluid outlet passageway in communication with the fluid chamber.
Claim 3
Dependent Claim
23 words
The fluid cell, as defined in claim 1, wherein each of the plurality of separate elongated openings extends radially from the fluid chamber.
Claim 4
Dependent Claim
56 words
The fluid cell, as defined in claim 2, wherein the inner body structure at the fluid outlet end defines first and second fluid exit ports having openings of differing cross-sectional areas communicating the fluid outlet passageway with the fluid chamber, each fluid exit port substantially diametrically disposed with respect to the other about the fluid chamber.
Claim 5
Dependent Claim
18 words
The fluid cell, as defined in claim 2, wherein the separate elongated openings are formed as elongated slots.
Claim 6
Dependent Claim
34 words
The fluid cell, as defined in claim 4, wherein the slots are elongated in a direction substantially defined by an imaginary line extending between the optical windows at opposite ends of the fluid chamber.
Claim 7
Dependent Claim
29 words
The fluid cell, as defined in claim 1, wherein the separate elongated openings at the inlet end are disposed equidistantly about the fluid chamber of the inner body structure.
Claim 8
Dependent Claim
26 words
The fluid cell, as defined in claim 6, wherein each of the plurality of separate elongated openings is a slot extending radially from the fluid chamber.
Claim 9
Dependent Claim
213 words
A fluid cell for carrying fluid to be analyzed by optical analyzing apparatus, comprising: an inner body member having a fluid inlet end and a fluid outlet end defining therebetween a fluid chamber having a generally cylindrically shaped sidewall, the inner body member having formed therein at the fluid inlet end a plurality of separate elongated fluid inlet openings communicating with the fluid chamber and equidistantly disposed about the generally cylindrically shaped sidewall of the fluid chamber, the inner body member having formed therein at the fluid outlet end first and second fluid exit ports having openings of differing size in communication with the fluid chamber; and an outer body member disposed about the inner body member, the outer body member having optical windows sealed fluid tight at opposite ends of the fluid chamber for permitting viewing of the fluid by the optical analyzing apparatus, the outer body member defining an annularly shaped fluid inlet passageway formed by the inner and outer body members and the annularly shaped fluid inlet passageway being in fluid communication with the fluid chamber through the plurality of separate elongated fluid inlet openings at the inlet end and the outer body member defining a fluid outlet passageway in communication with the fluid exit ports at the outlet end.
Claim 10
Dependent Claim
213 words
A fluid cell for carrying fluid to be analyzed by optical analyzing apparatus, comprising: an inner body member having a fluid inlet end and a fluid outlet end defining therebetween a fluid chamber having a generally cylindrically shaped sidewall, the inner body member having formed therein at the fluid inlet end a plurality of separate elongated fluid inlet openings communicating with the fluid chamber and equidistantly disposed about the generally cylindrically shaped sidewall of the fluid chamber, the inner body member having formed therein at the fluid outlet end first and second fluid exit ports having openings of differing size in communication with the fluid chamber; and an outer body member disposed about the inner body member, the outer body member having optical windows sealed fluid tight at opposite ends of the fluid chamber for permitting viewing of the fluid by the optical analyzing apparatus, the outer body member defining an annularly shaped fluid inlet passageway formed by the inner and outer body members and the annularly shaped fluid inlet passageway being in fluid communication with the fluid chamber through the plurality of separate elongated fluid inlet openings at the inlet end and the outer body member defining a fluid outlet passageway in communication with the fluid exit ports at the outlet end.
Claim 11
Dependent Claim
41 words
The fluid cell, as defined in claim 8, further comprising a fluid slot defined by the inner body member, the fluid slot being disposed to substantially extend the length of the fluid chamber to communicate with the second fluid exit port.
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) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |