Hyliion Holdings Corp.

Kevin Michael Van De Voorde

Joshua Tyler Mook

Victor Luis Marrero Ortiz

A linear electric machine includes a shaft and at least one piston assembly operably coupled with the shaft. The piston assembly includes a piston, a piston body, and an expansion chamber. The piston body defines a dome structure at the expansion chamber. The piston is a domed piston corresponding to the dome structure. The linear electric machine also includes a heater body positioned at an outer end of the expansion chamber adjacent to the dome structure. The piston body further defines an exterior surface corresponding to a shape of the dome structure. The exterior surface includes a plurality of surface features protruding therefrom and is arranged between the heater body and the dome structure. The plurality of surface features decrease a heat load across the exterior surface of the piston body.

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Cincinnati, OH, United States of America

Kevin Michael Van De Voorde