Electric resistance heating devices – Heating devices – Tank or container type liquid heater
Patent
1991-02-14
1992-03-03
Reynolds, Bruce A.
Electric resistance heating devices
Heating devices
Tank or container type liquid heater
392485, 219206, 219505, 219552, 338 22R, 123557, H01G 904
Patent
active
050938983
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 fluds, 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), Petrucelli
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 Konynenburg Peter H.
Burkard Herbert G.
Gerstner Marguerite E.
Jeffery John A.
Raychem Corporation
Reynolds Bruce A.
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