Communications: electrical – Systems – Call station
Patent
1976-02-20
1978-01-24
Caldwell, Sr., John W.
Communications: electrical
Systems
Call station
200 6109, 335305, 340270, G08B 2100
Patent
active
040706605
ABSTRACT:
A wear particle detector for use with hydraulic systems, capable of collecting wear particles formerly suspended in the hydraulic fluid and of discriminating between larger and smaller particles by indicating the former, but destroying the latter automatically without causing detection, whereby both device functions are connected to and energized by the same single electric power supply and indicating circuit.
REFERENCES:
patent: 2429920 (1947-10-01), Bourne, Jr.
patent: 2450630 (1948-10-01), Bourne, Jr.
patent: 3193815 (1965-07-01), Prestel
patent: 3432750 (1969-03-01), Botstiber
patent: 3622882 (1971-11-01), Gardner
Caldwell Sr. John W.
Lipton Robert S.
Myer Daniel
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