ALEXANDRIA, Va., June 4 -- United States Patent no. 12,320,427, issued on June 3, was assigned to AMSTED RAIL COMPANY INC. (Chicago).

"Hydrodynamic sealing element for a radial shaft seal" was invented by Linas Maskaliunas (Vancouver, Wash.) and Brian Ford (Moseley, Va.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A hydrodynamic sealing element for a radial shaft seal includes a radial flange leg encircling a rotation axis and an oblique flange leg encircling the rotation axis and joined to the radial flange leg. The oblique flange leg extends both radially inward and axially away from the radial flange leg to form an oblique angle relative to the radial flange leg. The oblique flange leg has an air-side s...