08043070 is referenced by 25 patents and cites 125 patents.

A pumping system for moving water of a swimming pool includes a water pump, an infinitely variable speed motor, and an arrangement for operating the motor. In one example, the pumping system includes a memory configured to store a plurality of retained speed values, an arrangement for providing a plurality of retained speed values to the memory, and an arrangement for reading a selected one of the plurality of retained speed values from the memory. In addition or alternatively, the pumping system includes a storage medium for digitally storing a plurality of pre-established motor speed values and an arrangement for receiving input from a user to select one of the pre-established motor speeds. In addition or alternatively, the pumping system further includes an arrangement for restarting operation of the motor at a previously selected speed value when power supplied to the motor is interrupted during operation of the motor. A method for controlling the pumping system is also provided.

Title
Speed control
Application Number
11/608887
Publication Number
8043070 (B2)
Application Date
December 11, 2006
Publication Date
October 25, 2011
Inventor
Peter Westermann Rasmussen
Soenderborg
DK
Florin Lungeanu
Egernsund
DK
Arne Fink Hansen
Graasten
DK
Einar Kjartan Runarsson
Soenderborg
DK
Kevin Murphy
Quartz Hill
CA, US
Daniel J Hruby
Sanford
NC, US
Christopher R Yahnker
Raleigh
NC, US
Ronald B Robol
Sanford
NC, US
Lars Hoffmann Berthelsen
Kolding
DK
Robert W Stiles Jr
Cary
NC, US
Agent
Quarles & Brady
Assignee
Danfoss Low Power Drives a Division of Danfoss
DK
Pentair Water Pool and
NC, US
IPC
F04B 49/06
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