Electronic dipstick

Details Electronic dipstick Electronic dipstick

1978-09-13

1980-02-05

Goldberg, Gerald

Measuring and testing

Liquid level or depth gauge

Thermal type

73346, 338 28, G01F 2324, G01F 2304

Patent

active

041866045

ABSTRACT:
A helically coiled strand forms a tubular body having an outer diameter adapted to fit in an existing dipstick channel in an internal combustion engine or like equipment having a sump defining container. The lower convolutions of the helical strand are expanded axially so as to afford unrestricted liquid movement between the strands. Within the axially expanded convolutions is supported a thermoelectric element such as a thermistor. One or more conductors for connecting the thermistor to external electronic circuitry extend through the center of the helically wound member, silicone rubber or the like being provided to support and insulate the conductor.

REFERENCES:
patent: 2476099 (1949-07-01), Knudson
patent: 3154060 (1964-10-01), Hundere
patent: 3650843 (1968-02-01), Kenyon
"Build-It Book of Car Electronics" by Graf et al; _1975; pp. 49-57.

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