http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-675043-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5d9f3ca41550d315642580237250c5b0 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01K11-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01K11-20 |
| filingDate | 1950-02-13^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1952-07-02^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-675043-A |
| titleOfInvention | Measurement of temperature distribution on a solid surface |
| abstract | 675,043. Luminescent materials and applications. EASTMAN KODAK CO. Feb. 13, 1950 [Feb. 11, 1949], No. 3625/50. Class 39 (i). A method for rendering visible the heat distribution on the surface of a solid body which comprises laying on or applying to the surfaces or parts thereof a thin uniform layer or thin uniform patches of a phosphor whose luminescent intensity when uniformly illuminated by exciting radiation is above nil and below the maximum obtainable from the phosphor at its optimum temperature. In Fig. 1, the condensing chamber 11 of a still is coated with a fluorescent phosphor 12 which is illuminated by ultra-violet light from a source 17. Comparison is made with a monitor disc 18 carrying the phosphor, or the layer may have been calibrated previously. Photographic records of brightness may be taken. This method may also be applied to internal combustion engines to determine cooling fin design. Small patches of phosphor, e.g. of phosphorescent tape, may be applied to very large surfaces, being accompanied each by a patch of a temperature insensitive phosphor. In further modifications an endless band coated with phosphor is in temporary contact with a moving sheet of material, e.g. rock wool, the temperature distribution of which determines faults, and when the phosphor band has been brought to the temperature of the sheet, it is illuminated with U.V. light and the luminescent brightness recorded by a photo-cell. Masks may be used in Fig. 3, where the phosphorescent property is utilized, the phosphor band 43 is illuminated with U.V. light from lamp 44, moves into contact with the hot sheet 30 of rock wool, and its phosphorescent brightness recorded at photo-cell 45 and fed to an amplifier 46 which actuates an inking device 47 to indicate a fault. A further modification utilizes fluorescence only, the lamp and photo-cell being situated at a point on the band just after leaving contact with the moving sheet. Graphs are included showing the relationship between temperature and brightness of a large number of phosphors which can be used. The examples give phosphors with positive or negative coefficients and include tungstates of strontium, lithium, sodium, zinc, barium, cadmium, magnesium, and calcium, the latter activated with manganese; molybdates of strontium, zinc, cadmium and lead or a mixture of the latter two ; cobalt borate; and sulphides or selenides of zinc and/or cadmium with silver, nickel or copper as activators. Temperatures of response range from - 200‹ C. to over 400‹ C. Specification 675,042 is referred to. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5986272-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105241577-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105241577-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/AU-736752-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/AU-736752-C http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5949539-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9924802-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6123455-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9850767-A1 |
| priorityDate | 1949-02-11^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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