Lubricant monitoring system

Details Lubricant monitoring system Lubricant monitoring system

1983-05-18

1985-03-19

Freeh, William L.

Expansible chamber devices

With inspection window in expansible chamber wall portion

With lock

417 13, 417 63, 277 2, F01B 2526, F01B 3112, F04B 4900, F04B 4902

Patent

active

045051860

ABSTRACT:
The lubricant monitoring system comprises an element which absorbs a liquid lubricant on the piston rod between a lubricant wiper assembly surrounding the same and a seal which surrounds the piston rod where the rod enters the compressor cylinder and an electrode of a measuring capacitor (CM) near the element. The lubricant absorbent element acts as the dielectric of the measuring capacitor.
In the event of a fault on the lubricant wiper assembly, liquid lubricant is absorbed by the absorbent element so that the dielectric constant changes. This can be utilized for an alarm.

REFERENCES:
patent: 3524043 (1970-08-01), Irvine
patent: 3815925 (1974-06-01), Matton
patent: 3887196 (1975-06-01), Renfrow
patent: 3940754 (1976-02-01), Weber
patent: 4128831 (1978-12-01), Rensch
patent: 4206402 (1980-06-01), Ishido

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