ALEXANDRIA, Va., May 5 -- United States Patent no. 12,617,507, issued on May 5, was assigned to SBL Manufacturing LLC (Camdenton, Mo.).
"Boat lift" was invented by Joshua David Deboer (Gretna, Neb.), Chase Alan Zacharias (Omaha, Neb.), Mike Vaughn (Afton, Okla.) and Ron Witt (Camdenton, Mo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A boat lift with at least one tank or tube configured to receive air and a bunk support frame coupled to the tube. A torque bar is supported by the bunk support frame and operable to rotate with respect to the frame. A pair of arms are mounted to opposite ends of the torque bar. The bunk support frame may define a channel accessible through first and second openings at ends o...