ALEXANDRIA, Va., June 9 -- United States Patent no. 12,649,220, issued on June 9, was assigned to MILWAUKEE ELECTRIC TOOL Corp. (Brookfield, Wis.).
"Piston seal for powered fastener driver" was invented by Mitchell T. Neuhoff (Waukesha, Wis.), Jason M. Julius (Waukesha, Wis.), David A. Bierdeman (New Berlin, Wis.), Logan M. Hietpas (Glendale, Wis.), Jacob N. Zimmerman (Pewaukee, Wis.) and Jeremy J. Keifenheim (West Bend, Wis.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A powered fastener driver includes a housing, a cylinder supported by the housing, and a moveable piston positioned within and moveable along a driving axis of the cylinder. The piston includes a circumferential groove on an outer periphera...