ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,419,518, issued on Sept. 23, was assigned to REICHERT INC. (Depew, N.Y.).
"Ophthalmic instrument probe detection method" was invented by David G. Kelkenberg (Akron, N.Y.), John W. Taylor (Cowlesville, N.Y.), Eric V. Palmer (Lancaster, N.Y.) and David J. Cash (Depew, N.Y.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of detecting presence or absence of a magnetic measurement probe at a measurement launch position in an electromagnetic coil of an ophthalmic instrument includes applying a temporary current pulse to the electromagnetic coil, detecting a counter-electromotive force voltage spike induced in the electromagnetic coil by the current p...