Patent EP0067033A1 successfully refreshed from Google Patents.
EP0067033A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A temperature control system for use with temperature responsive device calibration arrangement or the like
Assignee: Hoxan Corp
•
Filing: 1982-06-02
•
Granted: —
•
Expires: 2002-06-02
Abstract
Abstract A computer controlled feed-back control system enables the temperature of a suitable coolant to be maintained exactly a desired temperature or series of temperatures, for storing precious organic tissues or the like, or for calibrating cryogenic measuring instruments.
Inventors
- 👤 Yasuo c/o Hoxan-Laboratory of Hoxan Corp. Kuraoka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 06:01
CPC Classifications
G; G01; G01K; G01K15/00; G05; G05D; G05D23/00; G05D23/19; G05D23/1917
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
105 words
A system comprising: a cell containing a coolant, said cell being immersed in a cryogenic temperature media to be cooled thereby; heating means for heating said coolant; standard resistance thermometer means for sensing the temperature of said coolant; a computer including a CPU, a RAM and a ROM, said computer being connected with said standard thermometer means for receiving an input indicative of the actual temperature of said coolant, and with said heating means for controlling said heating means in a manner to control the amount of heat produced thereby so as to obtain a desired predetermined temperature; and sample means immersed in said coolant.
Claim 2
Independent Claim
105 words
A system comprising: a cell containing a coolant, said cell being immersed in a cryogenic temperature media to be cooled thereby; heating means for heating said coolant; standard resistance thermometer means for sensing the temperature of said coolant; a computer including a CPU, a RAM and a ROM, said computer being connected with said standard thermometer means for receiving an input indicative of the actual temperature of said coolant, and with said heating means for controlling said heating means in a manner to control the amount of heat produced thereby so as to obtain a desired predetermined temperature; and sample means immersed in said coolant.
Claim 3
Dependent Claim
17 words
A system as claimed in claim 1, wherein said sample means takes the form of organic matter.
Claim 4
Dependent Claim
19 words
A system as claimed in claim 1, wherein said sample means takes the form of a temperature responsive device.
Claim 5
Dependent Claim
20 words
A system as claimed in claim 1, wherein said sample means takes the form of a plurality of resistance thermometers.
Claim 6
Dependent Claim
57 words
A system as claimed in claim 4, further comprising circuit means associated with said standard resistance thermometer means and said plurality of resistance thermometers for sensing the output voltages of each of the plurality of resistance thermometers and comparing same with the output of said standard resistance thermometer means, said circuit means being connected with said computer.
Claim 7
Dependent Claim
111 words
A system as claimed in claim 5 wherein said circuit means includes: a first current generator connected in series with said standard resistance thermometer means through a first standard resistance; a second current generator connected in series with said plurality of resistance thermometers through a second standard resistance; scanner means operatively connected with each of said standard resistance means, said first and second standard resistances, and said plurality of resistance thermometers for sensing the terminal voltage of each; a digital voltmeter operatively connected to said scanner; said first current generator, said second current generator, said scanner means and said digital voltmeter being integrated with said computer through a GP-IB interface system.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.