ALEXANDRIA, Va., April 15 -- United States Patent no. 12,601,433, issued on April 14.
"Sealable drain pipe coupling" was invented by Abdul Latif Abbasi (Etobicoke, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "A drainpipe coupling is provided to sealably connect an insert pipe with an existing drainpipe. The coupling includes a tubular body positioned concentrically within both the insert and existing drainpipes. A coil spring with an adjustable diameter is positioned around the proximal end of the tubular body, with two actuation ends that move toward and apart from each other, adjusting the spring's diameter. An elastic tubular cover is positioned over both the coil spring and the proximal end of t...