ALEXANDRIA, Va., March 26 -- United States Patent no. 12,257,922, issued on March 25, was assigned to Electrans Technologies Ltd. (Oakville, Canada).

"Methods and apparatus for an active convertor dolly" was invented by Brian Layfield (Oakville, Canada), Amir Khajepour (Oakville, Canada), Brian Fan (Oakville, Canada) and John Loewen (Oakville, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure is directed at an apparatus for an active converter dolly for use in a tractor-trailer configuration. In one aspect, the apparatus includes a system to connect a first trailer towed behind a towing vehicle to a second trailer. The apparatus further includes a kinetic energy recovery device for transla...