Fuel heater

Details Fuel heater Fuel heater

2005-01-04

2005-01-04

Campbell, Thor (Department: 3742)

Electric resistance heating devices

Heating devices

Tank or container type liquid heater

C165S142000, C123S549000, C219S205000

Reexamination Certificate

active

06839508

ABSTRACT:
A fuel heater for a tank includes an elongated member that fits through an opening in the tank. The elongated member includes a first tube that defines a fuel channel and ends with a bottom fuel intake. Fuel may be drawn from the tank and conveyed by a supply side line coupled to the first tube. A second tube of the elongated member is coupled to a return side line that conveys warmed fuel back to the tank. A third tube substantially coaxially surrounds the first tube, and an outlet of the second tube enters the third tube. A heat trace may be employed to warm the fuel. Accordingly, the temperature of fuel in the tank may be maintained above the cloud point temperature.

REFERENCES:
patent: 3768730 (1973-10-01), Campbell
patent: 4326491 (1982-04-01), Burchett
patent: 4372279 (1983-02-01), Parks
patent: 4385615 (1983-05-01), Keane
patent: 4440138 (1984-04-01), Smith
patent: 4499886 (1985-02-01), Hinds
patent: 4585924 (1986-04-01), Pakula
patent: 4684786 (1987-08-01), Mann et al.
patent: 4971018 (1990-11-01), Ray
patent: 4979483 (1990-12-01), Ray
patent: 5029634 (1991-07-01), Hurner
patent: 5135044 (1992-08-01), Hurner
patent: 5158131 (1992-10-01), Hurner
patent: 5443053 (1995-08-01), Johnson
patent: 5806479 (1998-09-01), Bauer et al.

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