Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1984-08-20
1986-07-01
Eisenzopf, Reinhard J.
Communications: electrical
Condition responsive indicating system
Specific condition
324 65R, G01R 2702, G01R 3312, G01N 1506
Patent
active
045982805
ABSTRACT:
Frequently, particularly in the case of old machines such as engines, traissions, and gear boxes, particles, or "chips", are produced as the internal parts wear out. When these chips are present they indicate equipment damage and must be removed since they can cause additional damage to the equipment. For over a decade such electric chip detectors have been installed in helicopter transmissions and engines, as well as in propulsion and drive systems of many military fixed wing aircraft. Detectors usually have a pair of permanently magnetized electrodes that are insulated from each other and positioned to form a magnetic field in the small gap therebetween. One of the underlying problems of monitoring wear particles is that detectors can be triggered by an accumulation of metallic dust, causing a false chip detection warning. The wear particle detector system herein, of the type having a pair of electrically actuated electrodes, is constructed to discriminate between harmless dust and harmful chips while monitoring the rate of wear particle accumulation as a machine runs.
REFERENCES:
patent: 3259891 (1966-07-01), Coulter
patent: 3553672 (1971-01-01), Smith
patent: 4070660 (1978-01-01), Tauber
patent: 4219805 (1980-08-01), Magee
patent: 4302754 (1981-11-01), Magee
patent: 4467637 (1984-08-01), Rumberger
patent: 4468954 (1984-09-01), Lanctot
Eisenzopf Reinhard J.
Lane Anthony T.
Sheehan William J.
Solis Jose M.
The United States of America as represented by the Secretary of
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