US Patent Issued to Zurn Water on Sept. 1 for "Constant strain PEX expansion tool head" (Wisconsin Inventor)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,722,338, issued on Sept. 1, was assigned to Zurn Water LLC (Milwaukee).

"Constant strain PEX expansion tool head" was invented by Glen Trickle (Elm Grove, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Various improved designs for expansion tool heads are disclosed herein that are structured (1) to provide improved and more-evenly distributed strain in the pipe during the expansion strokes of the tool head which can include more gradually inducing the strain in the pipe and/or (2) to avoid the induction of plastic deformation of the pipe in regions of seal formation between the radial-inwardly facing surface of the pipe and the radially-outward fac...