Fuel level detector for automobile fuel tank

Measuring and testing – Liquid level or depth gauge – Float

Patent

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Details

73308, 200 84C, 335206, 340624, G01F 2362, H01H 3518

Patent

active

046272836

ABSTRACT:
A fuel level detector for an automobile fuel tank comprises a strut vertically provided within a fuel tank, a float slidably fitted around the strut and having a permanent magnet therein, a plurality of magnetic induction type reed switches slantedly disposed along the strut with a adequate distance between the adjacent reed switches, the length of which distance being defined such that the permanent magnet of the float always actuates two adjacent reed switches simultaneously, a plurality of resistances respectively connected to the plurality of reed switches for changing current value according to the reed switches which are actuated, a residual quantity warning means having an element of a luminous body which is connected between a ground and a predetermined reed switch among the plurality of reed switches, and a distance retention mechanism for keeping constant a distance between the predetermined reed switch and the bottom surface of the fuel tank and having a guide mounted to a base member for vertically guiding the strut and a spring mounted between the base member and the strut for urging the strut towards the bottom surface of the fuel tank.

REFERENCES:
patent: 3976963 (1976-08-01), Kubler
patent: 4086812 (1978-05-01), Luthe et al.
patent: 4184370 (1980-01-01), Schlick et al.
patent: 4305283 (1981-12-01), Redding
patent: 4536660 (1985-08-01), Tetro

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