US4548259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid containing vessel with temperature control device
Assignee: Olympus Corp
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Filing: 1982-10-07
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Granted: 1985-10-22
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Expires: 2002-10-07
Abstract
Abstract A flowcell for containing sample solutions is surrounded by an electric heater which is then surrounded by an isothermal frame having a large heat capacity, and a Peltier element serving as a cooling source is coupled with the isothermal frame. A heat delaying plate is arranged between the flowcell and heater and a temperature sensor is arranged between the flowcell and the heat delaying plate. The Peltier element is controlled in such a manner that the temperature of the isothermal frame is maintained substantially at a constant temperature lower than a predetermined temperature at which the sample solution is to be kept. The heater is controlled in accordance with a difference between the temperature of the sample solution and the predetermined temperature.
Inventors
- 👤 Sadao Tezuka
- 👤 Yasuhiko Tanaka
- 👤 Kunihiko Matsumura
- 👤 Tadao Yamamoto
- 👤 Nobuyoshi Suzuki
- 👤 Toshio Tsurukawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:08
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/1919; B; B01; B01L; B01L7/00; F; F25; F25B; F25B21/00; F25B21/02; F25B2321/00; F25B2321/02; F25B2321/021
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
116 words
A vessel for containing a liquid to be chemically analyzed and for maintaining the liquid at a predetermined temperature comprising: means for containing a liquid; heating means substantially fully surrounding said containing means for heating the liquid; an isothermal frame surrounding said heating means and having a large heat capacity, said isothermal frame comprising a bottom, side walls integrally formed with the bottom, the sidewalls increasing in thickness from the bottom to upper portions thereof, and a cover detachably provided on the upper portions of the side walls; a cooling source comprising a Peltier element connected to an outer surface of the bottom of said isothermal frame; and means for detecting a temperature of the liquid.
Claim 2
Dependent Claim
116 words
A vessel for containing a liquid to be chemically analyzed and for maintaining the liquid at a predetermined temperature comprising: means for containing a liquid; heating means substantially fully surrounding said containing means for heating the liquid; an isothermal frame surrounding said heating means and having a large heat capacity, said isothermal frame comprising a bottom, side walls integrally formed with the bottom, the sidewalls increasing in thickness from the bottom to upper portions thereof, and a cover detachably provided on the upper portions of the side walls; a cooling source comprising a Peltier element connected to an outer surface of the bottom of said isothermal frame; and means for detecting a temperature of the liquid.
Claim 3
Dependent Claim
40 words
A vessel according to claim 1, wherein an outer surface of a the Peltier element is connected to a radiator member and the isothermal frame is coupled with the radiator member by means of screws made of heat insulating material.
Claim 4
Dependent Claim
17 words
A vessel according to claim 1, wherein said temperature detecting means is arranged in the containing means.
Claim 5
Dependent Claim
35 words
A vessel according to claim 1, wherein said containing means comprises two container halves which are arranged side by side with a narrow space interposed therebetween, said temperature detecting means being arranged in said space.
Claim 6
Dependent Claim
32 words
A vessel according to claim 1, wherein said containing means comprises a container having a narrow space formed therein and extending inwardly thereinto, said temperature detecting means being arranged in said space.
Claim 7
Dependent Claim
21 words
A vessel according to claim 1, further comprising an auxiliary temperature detecting means for sensing a temperature of said cooling means.
Claim 8
Dependent Claim
19 words
A vessel according to claim 1, wherein said temperature detecting means comprises a temperature sensor of thin plate type.
Claim 9
Dependent Claim
30 words
A vessel according to claim 1, further comprising a heat resistance member having a lower thermal conductivity than said isothermal frame and interconnecting said Peltier element and said isothermal frame.
Claim 10
Dependent Claim
22 words
A vessel according to claim 8, wherein said heat resistance member comprises recesses formed in said outer surface of said isothermal frame.
Claim 11
Dependent Claim
22 words
A vessel according to claim 9, wherein said recesses are filled with material having a lower thermal conductivity than said thermal frame.
Claim 12
Dependent Claim
104 words
A vessel for containing a liquid to be chemically analyzed and for maintaining the liquid at a predetermined temperature comprising: means for containing a liquid; heating means substantially fully surrounding said containing means for heating the liquid; heat delaying means arranged between the containing means and the heating means for delaying heat transfer therebetween; and temperature detecting means arranged between the containing means and the heat delaying means for detecting a temperature; said heat delaying means having a thermal time constant such that the temperature detected by said temperature detecting means is substantially equivalent to that at the center of said liquid containing means.
Claim 13
Dependent Claim
104 words
A vessel for containing a liquid to be chemically analyzed and for maintaining the liquid at a predetermined temperature comprising: means for containing a liquid; heating means substantially fully surrounding said containing means for heating the liquid; heat delaying means arranged between the containing means and the heating means for delaying heat transfer therebetween; and temperature detecting means arranged between the containing means and the heat delaying means for detecting a temperature; said heat delaying means having a thermal time constant such that the temperature detected by said temperature detecting means is substantially equivalent to that at the center of said liquid containing means.
Claim 14
Dependent Claim
30 words
A vessel according to claim 11, wherein said heat delaying means has a thermal time constant which is substantially equal to that of the containing means filled with the liquid.
Claim 15
Dependent Claim
30 words
A vessel according to claim 11, wherein said heat delaying means has a thermal time constant which is somewhat larger than that of the containing means filled with the liquid.
Claim 16
Dependent Claim
30 words
A vessel according to claim 11, wherein said heat delaying means has a thermal time constant which is somewhat smaller than that of the containing means filled with the liquid.
Claim 17
Dependent Claim
129 words
A vessel for containing a liquid to be chemically analyzed and for maintaining the liquid at a predetermined temperature comprising: means for containing the liquid; heating means substantially fully surrounding the containing means for heating the liquid; an isothermal frame surrounding said heating means and having a large heat capacity; a cooling source arranged on an outer surface of said isothermal frame; heat delaying means arranged between the containing means and the heating means for delaying heat transfer therebetween; and temperature detecting means arranged between the containing means and the heat delaying means for detecting a temperature; said heat delaying means having a thermal time constant such that the temperature detected by said temperature detecting means is substantially equivalent to that at the center of the liquid containing means.
Claim 18
Dependent Claim
129 words
A vessel for containing a liquid to be chemically analyzed and for maintaining the liquid at a predetermined temperature comprising: means for containing the liquid; heating means substantially fully surrounding the containing means for heating the liquid; an isothermal frame surrounding said heating means and having a large heat capacity; a cooling source arranged on an outer surface of said isothermal frame; heat delaying means arranged between the containing means and the heating means for delaying heat transfer therebetween; and temperature detecting means arranged between the containing means and the heat delaying means for detecting a temperature; said heat delaying means having a thermal time constant such that the temperature detected by said temperature detecting means is substantially equivalent to that at the center of the liquid containing means.
Claim 19
Dependent Claim
25 words
A vessel according to claim 15, wherein said cooling source comprises a Peltier element which is provided on an outer surface of the isothermal frame.
Claim 20
Dependent Claim
30 words
A vessel according to claim 16, further comprising a heat resistance member having a lower thermal conductivity than said isothermal frame and interconnecting said Peltier element and said isothermal frame.
Claim 21
Dependent Claim
22 words
A vessel according to claim 17, wherein said heat resistance member comprises recesses formed in said outer surface of said isothermal frame.
Claim 22
Dependent Claim
22 words
A vessel according to claim 18, wherein said recesses are filled with material having a lower thermal conductivity than said isothermal frame.
Claim 23
Dependent Claim
40 words
A vessel according to claim 16, wherein an outer surface of the Peltier element is connected to a radiator member and the isothermal frame is coupled with the radiator member by means of screws made of a heat insulating material.
Claim 24
Dependent Claim
39 words
A vessel according to claim 16, wherein said isothermal frame comprises a bottom to which the Peltier element is connected, side walls integrally formed with the bottom and a cover detachably provided on upper portions of the side walls.
Claim 25
Dependent Claim
20 words
A vessel according to claim 21, wherein said side walls increase in thickness from the bottom to the top thereof.
Claim 26
Dependent Claim
30 words
A vessel according to claim 15, wherein said heat delaying means has a thermal time constant which is substantially equal to that of the containing means filled with the liquid.
Claim 27
Dependent Claim
30 words
A vessel according to claim 15, wherein said heat delaying means has a thermal time constant which is somewhat larger than that of the containing means filled with the liquid.
Claim 28
Dependent Claim
30 words
A vessel according to claim 15, wherein said heat delaying means has a thermal time constant which is somewhat smaller than that of the containing means filled with the liquid.
Claim 29
Dependent Claim
20 words
A vessel according to claim 15, wherein said temperature detecting means comprises a temperature sensor of a thin plate type.
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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) | 1988-10-21 | 1989-04-22 | 1989-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-21 | 1993-04-22 | 1993-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-21 | 1997-04-22 | 1997-10-22 | $7700.00 | Window Closed / Lapsed |