Electric resistance heating devices – Heating devices – Tank or container type liquid heater
Patent
1990-01-05
1991-06-18
Reynolds, Bruce A.
Electric resistance heating devices
Heating devices
Tank or container type liquid heater
219205, 219206, 219505, 219548, 219549, 219552, 210184, 210186, 123549, 123557, 338 22R, 338212, 338214, H01G 904
Patent
active
050251317
ABSTRACT:
Conductive polymer compositions based on polyvinylidene fluoride have improved properties when the polyvinylidene fluoride has a very regular structure which can be characterized by a low head-to-head content in the repeating units. The improved properties include electrical stability when contacted by organic fluids and/or when maintained at elevated temperatures in air. Such compositions which exhibit PTC behavior are particularly useful in the form of self-limiting heaters which are immersed in organic fluids, especially flexible strip heaters for heating diesel fuel before it passes through a fuel filter.
REFERENCES:
patent: 3823217 (1974-07-01), Kampe
patent: 3935159 (1976-01-01), Demillecamps et al.
patent: 3962373 (1976-06-01), Petreucelli
patent: 4237441 (1980-12-01), van Konynenburg et al.
patent: 4251432 (1981-02-01), Martin
patent: 4304987 (1981-12-01), van Konynenburg
patent: 4328151 (1982-05-01), Robinson
Au Andrew
van Konyenburg Peter H.
Burkard Herbert G.
Gerstner Marguerite E.
Jeffery John A.
Raychem Corporation
Reynolds Bruce A.
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