Appeal No. 2005-2192
Application No. 10/047,865
annular inlet ring mounted on said shroud where said annular
inlet ring and said sleeve are on opposite sides of said shroud
and protrude in opposite directions from said shroud, whereby
during rotation of said impeller smooth, efficient substantially
noise-free operation is obtained because said sleeve is in
balance with said annular inlet ring.
2. A pump impeller comprising:
a series of vanes having an outer end which is
integrally mounted on a shroud, said shroud having a centrally
located annular inlet ring which provides an inlet to an eye of
said impeller, said annular inlet ring protruding outwardly in a
first direction from said shroud; and
a hub integrally connected to an inner end of said
vanes, said hub having an integral sleeve connected thereto,
said sleeve protruding outwardly from said shroud in a second
direction, said second direction being opposite said first
direction, said sleeve having an axis of rotation, said inlet
having a longitudinal center axis, said axis of rotation being
aligned with said longitudinal center axis, whereby rotation of
said impeller produces essentially no vibration with said
impeller rotating smoothly, efficiently and substantially
noise-free.
THE PRIOR ART
The references relied on by the examiner to support the
final rejection are:
Botros 5,927,947 Jul. 27, 1999
Chapman 2002/0106277 Aug. 08, 2002
THE REJECTION
Claims 1 and 2 stand rejected under 35 U.S.C. § 103(a) as
being unpatentable over Chapman in view of Botros.
2
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