Measuring and testing – Specific gravity or density of liquid or solid
Reexamination Certificate
2008-07-08
2008-07-08
Williams, Hezron E. (Department: 2856)
Measuring and testing
Specific gravity or density of liquid or solid
Reexamination Certificate
active
10532508
ABSTRACT:
This invention concerns a device (1) for the determination of air content, the air separation behavior and the surface foam formation of oils, in particular of transmission oils with an air-oil mixer (2) and a differential pressures sensor (3). A conveyor system (4) transports the oil through pipe lines (5) of the air-oil mixer (2). A compressed air port (6) is provided, which transports air into the pipe lines (5), of the air-oil mixer (2). A Venturi pipe (9) is installed in one of the pipe lines (5), and the differential pressure sensor (3) records, through at least two separate drill tubes (7, 8) in the conveyor system of the oil at the Venturi pipe (9), differential pressures in the oil.
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Zander, Von R., P. Rupprath, G. M. Schneider & E. Rohne, “Neue Labormeβmethode zur Beurteilung des Luftabscheideverhaltens von Fluiden”,Tribologie&Schmierungstechnik,42, May 1995, pp. 263-268.
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Leinemann Magnus
Wetzel Arthur
Davis & Bujold & Daniels, P.L.L.C.
Frank Rodney T
Williams Hezron E.
ZF Friedrichshafen AG
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