US Patent Issued to Hanchett Entry Systems on June 23 for "Solid-state degauss circuit for use in an electromagnetic lock" (Arizona Inventor)

ALEXANDRIA, Va., July 15 -- United States Patent no. 12,665,116, issued on June 23, was assigned to Hanchett Entry Systems Inc. (Phoenix).

"Solid-state degauss circuit for use in an electromagnetic lock" was invented by Randall Shaffer (Phoenix).

According to the abstract* released by the U.S. Patent & Trademark Office: "A novel and useful solid-state degauss circuit for use with electromagnetic door locks. The door lock circuit is configured to provide a current to the electromagnetic coil load. A pulse width modulation (PWM) controller varies the frequency and/or duty cycle to a switch in series with the coil. An active, solid-state degauss circuit in line with the current flowing through the coil is provided. When triggered either in a...