US3801004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for collecting the contents of cuvets in a rotating spectrophotometer analyzer
Assignee: Adaltis US Inc
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Filing: 1972-09-22
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Granted: 1974-04-02
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Expires: 1992-09-22
Abstract
Abstract Known rotating spectrophotometers have a series of cuvets arranged in a ring member concentrically around a horizontally rotatable disc so that when the disc is rotated, centrifugal force mixes and transfers reagents and samples to the cuvets. As each cuvet passes a light source, the absorbence of each individual sample is detected and measured photometrically, and is converted to an electrical signal pulse. Upon completion of the measurements it is necessary to empty the cuvets and it is important that dispersion of the cuvet contents be avoided to prevent unsanitary and otherwise undesirable conditions. This is accomplished in the present invention by forcing the contents of the cuvets into a concave ring shaped member attached to the cuvette ring where the expelled liquid is held and confined.
Inventors
- 👤 S Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:56
CPC Classifications
B; B04; B04B; B04B5/00; B04B5/04; G; G01; G01N; G01N21/00; G01N21/01; G01N21/03; G01N21/07
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
120 words
In a rotating spectrophotometric chemical analyzer including a rotating cuvet ring having an outer surface and having cuvettes in communication with said outer surface, said cuvets being adapted to contain liquid, the improvement for collecting liquid from the cuvets which comprises means for forcing the liquid in said cuvets to the outer surface of said rotating cuvet ring to enable the centrifugal force developed by said cuvet ring to separate said liquid from said cuvet ring and collecting means fixedly positioned with respect to said rotating cuvet ring and rotating therewith having a generally concave inner surface opposite said cuvets arranged to restrain and confine liquid separated from said cuvet ring within said collecting during rotation of said cuvet ring.
Claim 2
Dependent Claim
120 words
In a rotating spectrophotometric chemical analyzer including a rotating cuvet ring having an outer surface and having cuvettes in communication with said outer surface, said cuvets being adapted to contain liquid, the improvement for collecting liquid from the cuvets which comprises means for forcing the liquid in said cuvets to the outer surface of said rotating cuvet ring to enable the centrifugal force developed by said cuvet ring to separate said liquid from said cuvet ring and collecting means fixedly positioned with respect to said rotating cuvet ring and rotating therewith having a generally concave inner surface opposite said cuvets arranged to restrain and confine liquid separated from said cuvet ring within said collecting during rotation of said cuvet ring.
Claim 3
Dependent Claim
155 words
In a rotating spectrophotometric chemical analyzer including a rotating cuvet ring having an outer surface and having cuvettes in communication with said outer surface, said cuvets being adapted to contain liquid, the improvement for collecting liquid from the cuvets which comprises conduit means communicating with each of said cuvets and the outer surface of said cuvet ring and arranged whereby liquid is retained in said cuvets and said conduit means; means for applying pressurized gas to said cuvets to force the liquid in said cuvets through said conduits to the outer surface of said rotating cuvet ring to enable the centrifugal force developed by said cuvet ring to separate said liquid from said cuvet ring; and an annular collecting member affixed to and surrounding said cuvet ring having a generally concave inner surface arranged to restrain and confine the liquid separated from said cuvet ring within said annular collecting during rotation of said cuvet ring.
Claim 4
Dependent Claim
155 words
In a rotating spectrophotometric chemical analyzer including a rotating cuvet ring having an outer surface and having cuvettes in communication with said outer surface, said cuvets being adapted to contain liquid, the improvement for collecting liquid from the cuvets which comprises conduit means communicating with each of said cuvets and the outer surface of said cuvet ring and arranged whereby liquid is retained in said cuvets and said conduit means; means for applying pressurized gas to said cuvets to force the liquid in said cuvets through said conduits to the outer surface of said rotating cuvet ring to enable the centrifugal force developed by said cuvet ring to separate said liquid from said cuvet ring; and an annular collecting member affixed to and surrounding said cuvet ring having a generally concave inner surface arranged to restrain and confine the liquid separated from said cuvet ring within said annular collecting during rotation of said cuvet ring.
Claim 5
Dependent Claim
36 words
Apparatus in accordance with claim 2 wherein an additional collecting member is located below said annular ring member to receive liquid from said annular ring by gravity flow when said annular ring member ceases to rotate.
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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |