ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,750, issued on March 17, was assigned to DIESEKO GROUP B.V. (Sliedrecht, Netherlands).
"Vibratory pile driving apparatus" was invented by Dirk Smulders (Sliedrecht, Netherlands) and Timo Olivier Van Dongen (Sliedrecht, Netherlands).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a vibratory pile driving apparatus for upending a pile and for driving a pile into the ground and/or extracting a pile out of the ground. The apparatus comprises a frame element, a clamping device, attached to the frame element at a first side thereof and configured to clamp the pile, at least one vibrator device, attached to the frame element...