ALEXANDRIA, Va., March 17 -- United States Patent no. 12,580,142, issued on March 17, was assigned to Magswitch Automation Co. (Superior, Colo.).
"Variable field magnetic couplers and methods for engaging a ferromagnetic workpiece" was invented by David H. Morton (Boulder, Colo.), Cengiz Kizilkan (Ingolstadt, Germany) and Paul J. Karp (Thornton, Colo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Magnetic coupling devices are disclosed which may be configured in at least three states. The various states may be provided through one or more of altering a position of a permanent magnet relative to another permanent magnet and altering a current level in a coil surrounding a permanent magnet."
The patent was f...