Pumps – Motor driven – Pump within rotary working member
Reexamination Certificate
2008-01-01
2008-01-01
Kramer, Devon C. (Department: 3746)
Pumps
Motor driven
Pump within rotary working member
C417S321000, C417S355000, C417S410400, C417S423140, C417S423150
Reexamination Certificate
active
07314352
ABSTRACT:
An electric pump comprises a case in which a core being enwound by a coil is embedded, a permanent magnet formed in a cylindrical shape, having a central axis being identical to that of the core, and positioned so as to face an inner peripheral side of the core, an outer rotor fixed to an inner peripheral side of the permanent magnet, a rotor unit including the permanent magnet and the outer rotor, an inner rotor having a central axis, which is eccentric from a central axis of the core, so as to rotate; and an inscribed-type pump for carrying out, by means of rotation of the inner rotor, which is engaged with the outer rotor so as to rotate in accordance with rotation of the outer rotor, intake and exhaust of fluids, wherein the rotor unit includes a slide surface extending in an axial direction; the case includes a cylindrical projecting ring portion having an identical central axis to that of the core, and the rotor unit is rotatably supported by the peripheral surface of the cylindrical projecting ring portion at the slide surface.
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Ikegawa Atsutoshi
Nakayoshi Hideki
A. Marquez, Esq. Juan Carlos
Aisin Seiki Kabushiki Kaisha
Fisher Esq. Stanley P.
Kramer Devon C.
Reed Smith LLP
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