Electricity: motive power systems – Automatic and/or with time-delay means – Responsive to thermal conditions
Reexamination Certificate
2007-12-17
2010-06-08
Ip, Paul (Department: 2837)
Electricity: motive power systems
Automatic and/or with time-delay means
Responsive to thermal conditions
C318S362000, C318S432000, C318S442000, C363S034000, C363S055000
Reexamination Certificate
active
07733048
ABSTRACT:
Method and arrangement in connection with a motor fed with a frequency converter provided with an intermediate voltage circuit. The method comprises steps of feeding motor voltage to the motor along a motor cable with a frequency converter for controlling the motor, rectifying the voltage of the motor cable and restricting the magnitude of the voltage of the motor cable at the end of the motor cable on the side of the motor with a clipper circuit coupled in parallel with the motor, using the rectified voltage for rotating one or more cooling fans of the motor.
REFERENCES:
patent: 5633790 (1997-05-01), Gritter et al.
patent: 5983653 (1999-11-01), Lee
patent: 6404150 (2002-06-01), Nehl et al.
patent: 6600249 (2003-07-01), Nelson et al.
patent: 6774476 (2004-08-01), Spitz et al.
patent: 6798162 (2004-09-01), Makaran et al.
patent: 6912353 (2005-06-01), Nelson et al.
patent: 6979964 (2005-12-01), Roe
patent: 7023712 (2006-04-01), Miettinen
patent: 7256513 (2007-08-01), Kumar et al.
patent: 7436138 (2008-10-01), Beifus
patent: 7506179 (2009-03-01), Templeton
patent: 2002/0003381 (2002-01-01), Nelson et al.
patent: 2003/0173916 (2003-09-01), Nelson et al.
patent: 2004/0012356 (2004-01-01), Makaran et al.
patent: 2004/0119439 (2004-06-01), Miettinen
patent: 2004/0201279 (2004-10-01), Templeton
patent: 2005/0254800 (2005-11-01), Nelson et al.
patent: 2006/0119177 (2006-06-01), Kumar et al.
patent: 2007/0205731 (2007-09-01), Beifus
patent: 2007/0205732 (2007-09-01), Beifus
patent: 199 42 258 (2001-03-01), None
patent: WO 01/39347 (2001-05-01), None
Finnish Search Report (with English language translation of category of cited documents) dated Jul. 2, 2007.
Finnish Office Action dated Jul. 2, 2007.
ABB Oy
Buchanan & Ingersoll & Rooney PC
Ip Paul
LandOfFree
Method and arrangement in connection with motor fed with... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and arrangement in connection with motor fed with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and arrangement in connection with motor fed with... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4173114