Patent US3856470A successfully refreshed from Google Patents.
US3856470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor apparatus
Assignee: Bayer Corp
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Filing: 1973-01-10
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Granted: 1974-12-24
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Expires: 1993-01-10
Abstract
Abstract A rotor assembly for an apparatus adapted for monitoring a chemical reaction and identifying the presence of certain substances in each of a multiplicity of discreet samples. The assembly includes a transfer disc for storing individually the various constituents of one or more independent reactions and a cuvette rotor disposed concentrically thereto. The cuvette rotor provides in the path of light to a photoresponsive device a multiplicity of chambers for receipt of the constituents of each reaction. Means are provided in the cuvette rotor to heat the constituents to optimum temperature and to maintain the constituents at that temperature during the reaction time.
Inventors
- 👤 H Cullis
- 👤 W Fordham
- 👤 C Soodak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:20
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/01; G01N21/03; G01N21/07
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
169 words
IN A PHOTOMERIC SOLUTION ANALYZER COMPRISING A POWERDRIVEN ROTOR ASSEMBLY WHICH DEFINES A MULTIPLICITY OF SAMPLE ANALYSIS CHAMBERS FOR ACCEPTING LIQUID SAMPLES TO BE ANALYZED, SAID ROTOR ASSEMBLY HAVING TRANSPARENT WALLS ADJACENT SAID SAMPLE ANALYSIS CHAMBERS FOR PERMITTING THE PASSAGE OF LIGHT THERETHROUGH AND A MULTIPLICITY OF CHAMBERS ADAPTED TO RETAIN LIQUID SAMPLES AND REACTANTS WHEN SAID ROTOR ASSEMBLY IS AT REST, AND TO RELEASE SAID LIQUID SAMPLES AND REACTANTS TO SAID SAMPLE ANALYSIS CHAMBERS WHEN SAID ROTOR IS ROTATED; AND STATIONARY PHOTOMETRIC MEANS FOR DETECTING CHANGES IN THE ANALYSIS CHAMBERS BY PASSING A BEAM OF LIGHT THROUGH THE TRANSPARENT WALLS OF SAID ROTOR ASSEMBLY, THE IMPROVEMENT COMPRISING: ELECTRIC POWDERED TEMPERATURE ADJUSTING MEANS MOUNTED ON, AND RPTATABLE WITH, SAID PHOTOMETRIC ASSEMBLY; ELECTRIC OUTPUT PRODUCING TEMPERATURE SENSING MEANS MOUNTED ON, AND ROTATABLE WITH, SAID PHOTOMETRIC ROTOR ASSEMBLY; AND MEANS COUPLED TO SAID TEMPERATURE, ADJUSTING MEANS AND SAID TEMPERATURE SENSING MEANS FOR CONTROLLING THE TEMPERATURE ADJUSTING MEANS TO PRECISELY MAINTAIN THE TEMPERATURE OF SAID PHOTOMETRIC ROTOR ASSEMBLY AT A SELECTED VALUE.
Claim 2
Dependent Claim
169 words
IN A PHOTOMERIC SOLUTION ANALYZER COMPRISING A POWERDRIVEN ROTOR ASSEMBLY WHICH DEFINES A MULTIPLICITY OF SAMPLE ANALYSIS CHAMBERS FOR ACCEPTING LIQUID SAMPLES TO BE ANALYZED, SAID ROTOR ASSEMBLY HAVING TRANSPARENT WALLS ADJACENT SAID SAMPLE ANALYSIS CHAMBERS FOR PERMITTING THE PASSAGE OF LIGHT THERETHROUGH AND A MULTIPLICITY OF CHAMBERS ADAPTED TO RETAIN LIQUID SAMPLES AND REACTANTS WHEN SAID ROTOR ASSEMBLY IS AT REST, AND TO RELEASE SAID LIQUID SAMPLES AND REACTANTS TO SAID SAMPLE ANALYSIS CHAMBERS WHEN SAID ROTOR IS ROTATED; AND STATIONARY PHOTOMETRIC MEANS FOR DETECTING CHANGES IN THE ANALYSIS CHAMBERS BY PASSING A BEAM OF LIGHT THROUGH THE TRANSPARENT WALLS OF SAID ROTOR ASSEMBLY, THE IMPROVEMENT COMPRISING: ELECTRIC POWDERED TEMPERATURE ADJUSTING MEANS MOUNTED ON, AND RPTATABLE WITH, SAID PHOTOMETRIC ASSEMBLY; ELECTRIC OUTPUT PRODUCING TEMPERATURE SENSING MEANS MOUNTED ON, AND ROTATABLE WITH, SAID PHOTOMETRIC ROTOR ASSEMBLY; AND MEANS COUPLED TO SAID TEMPERATURE, ADJUSTING MEANS AND SAID TEMPERATURE SENSING MEANS FOR CONTROLLING THE TEMPERATURE ADJUSTING MEANS TO PRECISELY MAINTAIN THE TEMPERATURE OF SAID PHOTOMETRIC ROTOR ASSEMBLY AT A SELECTED VALUE.
Claim 3
Dependent Claim
43 words
The invention of claim 1 wherein: said temperature adjusting means is a resistance electrical heater, said rotor assembly is, in large part, formed of a heat-conductive material, and said electrical heater is disposed in a flat layer adjacent to the said rotor assembly.
Claim 4
Dependent Claim
45 words
The invention of claim 2 wherein: said temperature sensing means is a thermistor and is mounted away from said flat temperature adjusting means, in proximity to a wall of an optical cell of the rotor apparatus, and within the conductive material of the rotor assembly.
References Cited (Backward Citations)
US3555284A
Cited
US3600900A
Cited
US3681029A
Cited
US3707354A
Cited
US3727832A
Cited
US3744974A
Cited
US3744975A
Cited
US3759666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |