ALEXANDRIA, Va., April 9 -- United States Patent no. 12,269,307, issued on April 8, was assigned to Rheinmetall Invent GmbH (Neuss, Germany).

"Leaf spring device, chassis and vehicle" was invented by Martin Weissert (Nordheim, Germany) and Ingo Goutier (Bad Rappenau, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A leaf spring device for a vehicle, comprising a leaf spring apparatus made of a fiber composite plastic, a first bearing point provided at a first end section of the leaf spring apparatus for supporting the leaf spring device on the vehicle, the first bearing point comprising exactly three rotational degrees of freedom, and a second bearing point provided at a second end section of the leaf...