ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,440,904, issued on Oct. 14, was assigned to Klaus Raiser GmbH & Co. KG (Eberdingen, Germany).
"Expansion clamping device and method of making same" was invented by Thomas Retzbach (Bonningheim, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to an expansion clamping device having a main body (2) and an expansion sleeve (5) which is inserted into the main body (2) or surrounds the body, forming a pressure chamber (8), the pressure chamber (8) being capable of being acted upon by a hydraulic medium with resilient deformation of the expansion sleeve (5). The expansion sleeve (5) is integrally fixed to the main body (2) at the f...