Related Patents

• U.S. Patent 5,670,041, September 1997
• U.S. Patent 5,710,536, January 1998
• U.S. Patent 5,725,778, March 1998
• U.S. Patent 5,776,334, July 1998
• U.S. Patent 5,846,414, December 1998
• U.S. Patent 5,916,490, June 1999
• U.S. Patent 5,951,856, September 1999

Major breakthrough #1 : Constant-Current-Source

• (U.S. Patent 5,725,778)

  Problem: When an electronic descaling unit was installed in a large pipe (i.e., > 3 in diameter), the output power significantly dropped.

  Solution: Constant-Current-Source

  

Major breakthrough #2 : Off-set coil

• (U.S. Patent 5,846,414)

  Problem: Induction is zero at the center of pipe, where flow velocity is maximum.

  

  Solution: Off-set coil

  

Major breakthrough #3 : Pre-wrapped coil

• (U.S. Patent 5,776,334)

  Problem: Manual wrapping at site is unsafe and impractical.

  Solution: Pre-wrapped coil

  

Actual Implementation

Offset and prewrapped coil with constant current source are integrated as shown below: