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Judge: Inpro/Seal’s CDR Does Not Infringe On ITW Patent

Posted on June 27, 2012

Inpro/Seal LLC, a global company specializing in engineered bearing and system protection for rotating equipment, announced that a federal court in Chicago, Illinois, U.S.A. has entered judgment that its current diverter ring (CDR) does not infringe a patent asserted by Illinois Tool Works Inc. (ITW).

On Sept. 16, 2011, Judge James B. Zagel of the United States District Court for the Northern District of Illinois entered an order regarding the scope of protection offered by ITW’s U.S. Patent No. 7,193,836. ITW acknowledged that Inpro/Seal’s CDR does not infringe its patent as interpreted by the court, and Judge Zagel then entered an order granting judgment of non-infringement in favor of Inpro/Seal.

Inpro/Seal’s CDR uses proprietary conductive filaments to protect bearings installed in motors and coupled equipment from stray shaft currents generated by variable frequency drives (VFDs), the company said, adding that the CDR provides a low impedance path to ground, safely diverting harmful currents away from the bearings and preventing premature bearing failure.

For more information: www.inpro-seal.com

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