ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,486,928, issued on Dec. 2, was assigned to JOHNSON SCREENS INC. (New Brighton, Minn.).
"Anti-rotational pipe coupling" was invented by Clarence Leavitt (Forked River, N.J.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Apparatus and related method for coupling adjacent pipe lengths, for example, a drop pipe assembly that utilize an intermediate coupling member to prevent rotational disengagement of adjacent pipe lengths under the influence of rotational torque. The coupling member can comprise an internal key feature that physically engages a keyed end on at least one end of a length of pipe. The internal key feature can include key members located on ea...