ALEXANDRIA, Va., June 17 -- United States Patent no. 12,313,498, issued on May 27.
"Chassis dynamometer" was invented by Richard Speiser (Boerwang, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A chassis dynamometer for motorcycles with a combustion engine, having a mounting unit, at least one fastening unit, an operating unit, a control unit and a roller for recording the peripheral speed of a motorcycle rear wheel is disclosed. The chassis dynamometer has a flow unit a drive unit, a diffuser and an outflow unit arranged downstream of the diffuser in the direction of flow where the diffuser and outflow unit form a flow channel carrying gas in the operating state, wherein the diffuser can be driven ...