Imperforate bowl: centrifugal separators – Rotatable bowl – Driven by energy of material supplied
Reexamination Certificate
2007-11-20
2007-11-20
Cooley, Charles E. (Department: 1723)
Imperforate bowl: centrifugal separators
Rotatable bowl
Driven by energy of material supplied
Reexamination Certificate
active
11220867
ABSTRACT:
A rotor (40) for a centrifugal separator (20) used for separating solid contaminants from pressurized engine lubricant, is driven by pressure of the lubricant, a portion of which is directed to, and expelled from rotor nozzles (88). The rotor comprises an open-type vessel (42), which in operation is only partially filled with liquid as an annular layer whose radial thickness is determined by outlet passages (721etc). The rotor is formed from a cap (62), an annular cup-like component (60) with a tubular wall (50) that in use surrounds a spindle and defines an inlet region (66) for pressurized liquid, and a drive member (84) having nozzles (88). The cap and cup-like component are individually molded from synthetic resin and joined to form a vessel (40). Inlet region (66) is connected to the cup by transfer passage (70). The base of the cup is molded with integral outlet passages (721) and a recess (92) for receiving drive member (84), which defines a conduit directing pressurized liquid from the central region (66) to nozzles (88).
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EP Search Report dated Jan. 20, 2006 (seven (7) pages).
Cooley Charles E.
Crowell & Moring LLP
Mann & Hummel GmbH
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