US Patent Issued on July 8 for "Expansion plug and system and method employing same" (New York Inventor)

ALEXANDRIA, Va., July 9 -- United States Patent no. 12,352,378, issued on July 8.

"Expansion plug and system and method employing same" was invented by Robert Plewa (East Aurora, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An expansion plug includes a first collar configured to advance as it rotates relative to a shaft, a second collar configured to move axially along the shaft without rotating, a first expanding structure, and a second expanding structure disposed in the stated order on the shaft. When the first collar is rotated in an advancement direction, opposite sides of the second expanding structure are moved closer together to expand the second expanding structure, and then opposite sides of...