ALEXANDRIA, Va., July 9 -- United States Patent no. 12,352,001, issued on July 8, was assigned to Electric Foundation Equipment B.V. (Klundert, Netherlands).
"Vibratory hammer with electric motor" was invented by Daniel De Jager (Hendrik Ido Ambacht, Netherlands), Adis Bajric (Breda, Netherlands), Joannes Christoffel Werri (Kwadendamme, Netherlands) and Alexander Jorissen (Loosdrecht, Netherlands).
According to the abstract* released by the U.S. Patent & Trademark Office: "A vibratory hammer (1) for driving or retracting sheet piles, pipes or other elements into or from the soil, comprises a vibration case (2). A clamp (17) is attached to the vibration case (2). The clamp (17) comprises gripping jaws (18) for gripping the sheet piles or o...