Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1974-11-15
1977-07-26
Bartis, A.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
128214A, 138 33, 138133, 174 47, 219505, 219522, 338 23, H05B 358, A61M 514, F16L 1112, F24H 110
Patent
active
040385191
ABSTRACT:
A flexible heating tube especially for medical use, e.g. for taking blood away from and returning it to the body, in which a flexible pipe of transparent plastics material is provided with at least one electrical helical resistance heating conductor and at least one helical filiform temperature measuring resistance probe. The two elements are wound on the same axis and are embedded in the wall of the pipe and are in surrounding relation to the bore in the pipe. The helical turns of the at least one electrical resistance conductor and of the at least one temperature measuring probe are of the same pitch and are coextensive along the length of the pipe. Electrical connection terminals at at least one end of said pipe are connected to said at least one heating conductor and said at least one temperature measuring probe.
REFERENCES:
patent: 641306 (1900-01-01), Lawton
patent: 1995302 (1935-03-01), Goldstein
patent: 2274839 (1942-03-01), Marick
patent: 2516864 (1950-08-01), Gilmore et al.
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patent: 2745074 (1956-05-01), Darling
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patent: 3585361 (1971-06-01), Rosen et al.
patent: 3603403 (1971-09-01), Horwinski
patent: 3803385 (1974-04-01), Sandorf
Bartis A.
Rhone-Poulenc S.A.
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