ALEXANDRIA, Va., July 14 -- United States Patent no. 12,678,748, issued on July 14.
"Reversing flow apparatus" was invented by Walter Jacob Bauer (Baden, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "A reversing flow apparatus comprising a chamber having a series of two or more sequential rings mounted on a shaft extending axially through the chamber, the rings being separated by a space, each ring comprising a circumference and one or more S-shaped members extending from a point in the circumference to another point in the circumference and across a center of the ring, the two or more sequential rings being mounted along the shaft in a twist arrangement such that at least one ring In the apparatus h...