Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Reexamination Certificate
2007-02-20
2007-02-20
Cecil, Terry K. (Department: 1723)
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
C210S103000, C210S137000, C210S143000, C210S258000, C210S195100
Reexamination Certificate
active
10491401
ABSTRACT:
The invention relates to an oil filter installation for cleaning or cleaning and dessication of the oil in a tap changer at a power transformer or a plunger core coil, wherein a measuring device for detecting the volume flow of the throughflowing oil is provided and the electric pump motor is influenced by way of an interposed frequency converter in accordance with the result of a comparison of this measured value with a target value.
REFERENCES:
patent: 6062821 (2000-05-01), Golner et al.
patent: 2948111 (1981-06-01), None
patent: 4033172 (1992-05-01), None
patent: 42 06 420 (1992-09-01), None
Dohnal Dieter
Viereck Karsten
Cecil Terry K.
Maschinenfabrik Reinhausen GmbH
Wilford Andrew
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