Electric pump with relief valve

Details Electric pump with relief valve Electric pump with relief valve

2009-01-07

2011-10-18

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Moving cylinder

Rotating

C418S132000, C418S180000, C418S270000, C417S310000, C417S356000, C417S410400, C310S261100

Reexamination Certificate

active

08038423

ABSTRACT:
According to an aspect of the present invention, an electric pump includes: a housing; an outer rotor; an inner rotor; a base member facing one side surface of the outer rotor and one side surface of the inner rotor; a side plate member, having a facing surface facing the other side surface of the outer rotor and the other side surface of the inner rotor and a non-facing surface opposed to the facing surface; a shaft; a suction port; a discharge port; a negative pressure applied region; a positive pressure applied region; and a relief valve, discharging the fluid from the positive pressure applied region to a non-facing surface side of the side plate member when a pressure applied at the positive pressure applied region exceeds a predetermined value.

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Search Report issued Jul. 13, 2011 by the European Patent Office in European Patent Application No. 08022148, 7 pgs.

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