ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,510,684, issued on Dec. 30, was assigned to Mettler-Toledo Safeline Ltd. (Manchester, Great Britain).
"Metal detection apparatus" was invented by David Lyon (Cheadle Hulme, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A metal detection apparatus includes a balanced coil system with a transmitter coil connected to a transmitter unit, and receiver coils connected to a receiver unit, connected to a signal processing unit. A controllable frequency generator provides a selectable operating frequency to an amplifier stage, connected to an adaptation unit, which includes a coupling transformer with at least one primary and secondary coil having...