Impeller arrangement
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 10, 2012
Grant Date -
Jun 26, 2008
app pub date -
Dec 18, 2007
filing date -
Dec 21, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An impeller arrangement comprises an impeller 10 having at least one first vane surface 26 orientated such that the application of fluid under pressure thereto applies a torque to the impeller 10 in a first rotary direction, at least one second vane surface 28 orientated such that the application of fluid under pressure thereto applies a torque to the impeller 10 in a second, opposite rotary direction, and a valve 34 operable to control the supply of fluid to the first and second vane surfaces 26, 28.
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