Pump impeller
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 3, 2002
Grant Date -
N/A
app pub date -
Nov 20, 2000
filing date -
Nov 19, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pump impeller having a central hub and circumferentially-spaced bottom vanes extending in a direction outwardly of the hub. An annular shroud surrounds the hub in outwardly-spaced relationship thereto and provides an impeller liquid inlet passage around the hub leading to the vanes. A permanent magnet motor rotor is mounted on the annular shroud. The rotor is used in a sump pump having an upper cylindrical filter that encloses a float switch for operating the pump motor.
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