ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,544,893, issued on Feb. 10, was assigned to Black & Decker Inc. (New Britain, Conn.).
"Feed piston pressure tube" was invented by Jonathan W. Fairbanks (Coventry, R.I.), Jonathan D. Kalow (East Greenwich, R.I.) and James Sareault (Walpole, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pneumatic fastening device which uses compressed air from an internal reservoir to momentarily move a feed piston in a direction away from a drive channel when a trigger is actuated and a fastener is driven into a workpiece. The compressed air can flow from the reservoir to a return chamber by flowing through a passageway to pressurize the return chamber and move ...