US3727832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature control for centrifugal analyzer
Assignee: Alfa Wassermann Inc
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Filing: 1971-02-19
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Granted: 1973-04-17
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Expires: 1991-02-19
Abstract
Abstract Disclosed is a method and apparatus for providing close temperature control for the spinning, rotating cuvette and sample distributing disc assembly of a high speed centrifugal analyzer or comparable rotating head device by circulating a temperature conditioning fluid through the rotating assembly. This method of temperature control assures rapid thermal response of the rotor and sample so that precise temperature control and stability is provided for the rotor, cuvettes and test specimens in the rotating assembly. The conditioning fluid may be any fluid and it may either raise or lower the temperature of the assembly.
Inventors
- 👤 E Maclin
- 👤 A Perle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:28
CPC Classifications
B; B04; B04B; B04B15/00; B04B15/02; B04B5/00; B04B5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
In a temperature control and wash fluid system for a centrifugal analysis device having a rotor assembly and cuvettes therein, a rotor shaft for rotating said rotor assembly the improvement comprising a plurality of passages extending through said rotor shaft, means for supplying a temperature conditioning fluid to one of said shaft passages, a temperature conditioning passage in said rotor assembly for receiving said temperature conditioning fluid from said one rotor passage and applying said temperature conditioning fluid to regions adjacent said cuvettes to control the temperature thereof and discharging said temperature conditioning fluid to another one of said rotor passages, means for supplying a wash fluid to a third one of said rotor passages, a wash fluid passage in said rotor assembly for receiving said wash fluid and applying it to said cuvettes, and means for discharging said wash fluid from said rotor assembly.
Claim 2
Dependent Claim
145 words
In a temperature control and wash fluid system for a centrifugal analysis device having a rotor assembly and cuvettes therein, a rotor shaft for rotating said rotor assembly the improvement comprising a plurality of passages extending through said rotor shaft, means for supplying a temperature conditioning fluid to one of said shaft passages, a temperature conditioning passage in said rotor assembly for receiving said temperature conditioning fluid from said one rotor passage and applying said temperature conditioning fluid to regions adjacent said cuvettes to control the temperature thereof and discharging said temperature conditioning fluid to another one of said rotor passages, means for supplying a wash fluid to a third one of said rotor passages, a wash fluid passage in said rotor assembly for receiving said wash fluid and applying it to said cuvettes, and means for discharging said wash fluid from said rotor assembly.
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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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |