Thermal measuring and testing – Determination of inherent thermal property – Thermal conductivity
Patent
1989-08-08
1991-07-02
Yasich, Daniel M.
Thermal measuring and testing
Determination of inherent thermal property
Thermal conductivity
73 611R, 73 73, 324694, 324698, 340438, 374 10, B60Q 900, G01N 2718
Patent
active
050281445
ABSTRACT:
A brake fluid tester for measuring the quality of brake fluid, comprising means for measuring the conductivity of the brake fluid, preferably comprising a plurality of comparators for comparing the resistance of the brake fluid to a plurality of reference, resistances. The device further comprises indicating means, preferably light emitting diodes, responsive to the measuring means for indicating the quality of the brake fluid based upon its measured conductivity. An increasing number of diodes are illuminated as the conductivity of the brake fluid increases, providing a positive indication when the device is working and providing an easy to interpret display of the test results. The diodes are preferably activated at preselected levels of conductivity, corresponding to preselected levels of moisture contamination.
REFERENCES:
patent: 2552088 (1951-05-01), Davis
patent: 2752566 (1956-06-01), Quinton
patent: 2977797 (1961-04-01), Hoffmann et al.
patent: 4074226 (1978-02-01), Takada et al.
patent: 4316185 (1982-02-01), Watrous et al.
patent: 4566805 (1986-01-01), Klein et al.
patent: 4575711 (1986-03-01), Suzuki et al.
patent: 4654645 (1987-03-01), Yamagishi
patent: 4733556 (1988-03-01), Meitzler et al.
patent: 4872316 (1989-10-01), Browne et al.
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