Electric fuel heating device
AssigneeTexas Instruments Incorporated
InventorsKazuo Kayanuma, Kazuo Sasaki
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Abstract
A fuel heating device comprises an electroconductive inner tube which forms a passageway for fuel to be heated. A heater having a positive coefficient of resistance (PTC) is fixed to the side of the outside surface of this electroconductive inner tube, a resilient electrode contacts this heater from the side of its outside surface, and a first electrically and thermally insulating outer tube is provided around the entire periphery of the aforementioned electroconductive inner tube to cover the aforesaid heater completely for holding the electrode compressed to the heater. A second electrically and thermally insulating outer tube is provided around the entire periphery of the first tube, said second tube including means for mounting the device for use.
Claims2
A fuel heating device comprising an electroconductive inner tube having an inner surface defining a passageway for fuel that is to be heated, means for electrically connecting said inner tube to a source of electrical power, an electric heater fixed in electrical contact with an outside surface of said electroconductive inner tube, a resilient electrode electrically contacting an outer surface of said heater, means for electrically connecting the electrode to a source of electrical power, a first electrically and thermally insulating outer tube surrounding the entire outer periphery of the aforementioned electroconductive inner tube in such a manner as to cover the aforesaid heater completely with said electrode compressed against said heater, and a second electrically and thermally insulating outer tube surrounding the entire outer surface of said first outer tube, said second outer tube including means for mounting the device.
Dependencies are inferred from the claim text.