Lubricant contamination warning device

Details Lubricant contamination warning device Lubricant contamination warning device

1975-10-07

1977-02-15

Caldwell, John W.

Communications: electrical

Systems

Call station

210 85, 335305, 340270, G08B 2100

Patent

active

040084647

ABSTRACT:
Apparatus for providing an electrical warning signal when ferrous contamination builds up in the lubricant of a mechanism utilizing gearing. The apparatus includes a pair of annular magnetic members positioned in a spaced-apart relation on a support member. The support member is attached to the lubricant filler plug so that the magnets are above the normal lubricant level within the mechanism, but are exposed to the normal lubricant flow during operation of the mechanism. The magnetic members are part of a normally-open electrical circuit in which one of the magnets is connected to a source of electrical potential and the other magnet is grounded. One portion of the circuit is then connected to an electrically-actuated warning device so that when ferrous contamination on one of the magnet members comes into contact with ferrous contamination on the other magnetic member, the circuit is closed and a warning signal is provided to the operator of the mechanism.

REFERENCES:
patent: 2462715 (1949-02-01), Booth
patent: 3170871 (1965-02-01), Moriya
patent: 3193815 (1965-07-01), Prestel
patent: 3373352 (1968-03-01), Huigens

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