US Patent Issued to National Breaker Services on March 18 for "Mechanism for racking in and ensuring against over racking in and still allowing racking out of circuit breaker with respect to enclosure" (New York Inventor)

ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,441, issued on March 18, was assigned to National Breaker Services LLC (Middlebury, Conn.).

"Mechanism for racking in and ensuring against over racking in and still allowing racking out of circuit breaker with respect to enclosure" was invented by Bruce Hack (Yonkers, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A mechanism for a circuit breaker to rack in and out of a cabinet enclosure has a long, threaded screw rod on the circuit breaker captured into a stationary nut at the back of the cabinet. Racking inwardly is limited by the selective release of the nut when the maximum extent of racking in is reached. When a cross beam of the circuit...