ALEXANDRIA, Va., May 5 -- United States Patent no. 12,617,659, issued on May 5, was assigned to Quality Stainless Products (Maryland Heights, Mo.).
"Locking turnplate" was invented by Christopher Seay Green (St. Louis) and Michael Charles Burke (Chesterfield, Mo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "According to an aspect of the present disclosure, a locking turnplate includes a cylinder body having a cylinder chamber. A piston is received in the cylinder chamber and a mid-plate is disposed above the cylinder chamber of the cylinder body. A top plate is supported above the mid-plate by a bearing assembly including a plurality of spaced ball bearings. A bushing is fixedly attached to the top plate a...