Pumps – Condition responsive control of pump drive motor – Single motor control element responsive to means sensing...
Reexamination Certificate
2005-05-10
2009-10-27
Kramer, Devon C (Department: 3746)
Pumps
Condition responsive control of pump drive motor
Single motor control element responsive to means sensing...
C417S044100, C417S032000, C417S043000
Reexamination Certificate
active
07607895
ABSTRACT:
A fluid circulation pump (10) with synchronous motor (14), equipped with fluid heating device (40), particularly for washing machines or the like, of the type comprising a rotor (18), equipped with a permanent magnet being rotation-driven by the electromagnetic field generated by a stator (15) equipped with pole shoes (20) with the corresponding windings. This pump (10) has also a magnetic flux sensor (22) of the rotor (18) and a control unit (24) a signal from the magnetic flux sensor (22) at least a typical parameter of said fluid and a comparator this parameter with a reference value and to cut the power supply of the fluid heating device (40) off upon reaching a threshold of the predetermined reference parameter.
REFERENCES:
patent: 5418451 (1995-05-01), Maass et al.
patent: 2002/0158545 (2002-10-01), Marioni
patent: 36 27 732 (1988-02-01), None
patent: 1 334 689 (2003-08-01), None
patent: 1 351 375 (2003-10-01), None
patent: 1 369 658 (1974-10-01), None
patent: WO-00/28878 (1998-11-01), None
Akerman & Senterfitt
Askoll Holding S.r.l.
Kramer Devon C
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