EP0132233A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Thermochromatic method for the level determination of liquids or liquefied gases in metallic containers, and apparatus therefor
Assignee: Individual
•
Filing: 1984-06-14
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Granted: —
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Expires: 2004-06-14
Abstract
Abstract @ The method is characterized by the use of a strip (B) of thermal colour sensitive material applied to at least a part of the container towards the top and in contact with the external wall (A), of the application of heat to such strip (B) of thermal colour sensitive material directly or indirectly from an outside source and successively the natural cooling of the strip (B) of thermal colour sensitive material, the level of the liquid in the container being indicated bythe variation in colour on the said strip of thermal colour sensitive material.
Inventors
- 👤 Mario Cozzolino
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 04:57
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
106 words
The thermographic method for the determination of the level of liquid or liquified gass in metallic containers is characterized through the utilization of a strip of thermal colour sensitive material extending at least along a part of the container towards the top and in contact with the external wall, and the application of heat to said strip of thermal colour sensitive material directly or indirectly from an external source and successively the natural cooling of such strip of thermal colour sensitive material, the level of the liquid in the container being indicated by the difference in colour in the said strip of thermal colour sensitive material.
Claim 2
Dependent Claim
106 words
The thermographic method for the determination of the level of liquid or liquified gass in metallic containers is characterized through the utilization of a strip of thermal colour sensitive material extending at least along a part of the container towards the top and in contact with the external wall, and the application of heat to said strip of thermal colour sensitive material directly or indirectly from an external source and successively the natural cooling of such strip of thermal colour sensitive material, the level of the liquid in the container being indicated by the difference in colour in the said strip of thermal colour sensitive material.
Claim 3
Independent Claim
18 words
The method as described in (1) above whereby the thermal colour sensitive material returns to its original colour.
Claim 4
Independent Claim
18 words
The method as described in (1) above whereby the thermal colour sensitive material returns to its original colour.
Claim 5
Independent Claim
18 words
The method as described in (1) above whereby the thermal colour sensitive material is made of liquid cristal.
Claim 6
Independent Claim
18 words
The method as described in (1) above whereby the thermal colour sensitive material is made of liquid cristal.
Claim 7
Independent Claim
14 words
The method as described in (1) above whereby the source of heat is electric.
Claim 8
Independent Claim
14 words
The method as described in (1) above whereby the source of heat is electric.
Claim 9
Independent Claim
17 words
The method as described in (1) above whereby the strip of thermal colour sensitive material is adhesive.
Claim 10
Independent Claim
17 words
The method as described in (1) above whereby the strip of thermal colour sensitive material is adhesive.
Claim 11
Independent Claim
74 words
The apparatus to apply the method as described in (1) above is characterized by being essentially constituted of a chromographic part and an elec - tric part, the chromographic part being comprised of a strip of thermal colour sensitive material returning to is original colour, and the eletric part being comprised of a plate of magnetic plate connected to the chromographic strip and by an insulated electrically heated tape attached to the magnetic tape.
Claim 12
Independent Claim
74 words
The apparatus to apply the method as described in (1) above is characterized by being essentially constituted of a chromographic part and an elec - tric part, the chromographic part being comprised of a strip of thermal colour sensitive material returning to is original colour, and the eletric part being comprised of a plate of magnetic plate connected to the chromographic strip and by an insulated electrically heated tape attached to the magnetic tape.
Claim 13
Independent Claim
17 words
The apparatus as described in (6) above whereby the electric part is integrated by a time switch.
Claim 14
Independent Claim
17 words
The apparatus as described in (6) above whereby the electric part is integrated by a time switch.
Claim 15
Independent Claim
34 words
The apparatus to apply the method as described in (1) above is characterized by being essentially comprised of a chromographic part consisting of a thermal colour sensitive strip which returns to its orignal colour.
Claim 16
Independent Claim
34 words
The apparatus to apply the method as described in (1) above is characterized by being essentially comprised of a chromographic part consisting of a thermal colour sensitive strip which returns to its orignal colour.
Claim 17
Independent Claim
25 words
An apparatus as described in (6) and (8) whereby the thermal colour sensitive material which returns to its original colour is made of liquid cristal.
Claim 18
Independent Claim
25 words
An apparatus as described in (6) and (8) whereby the thermal colour sensitive material which returns to its original colour is made of liquid cristal.
References Cited (Backward Citations)
US3696675A
Cited
DE3211015A1
Cited
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